Flender Power Transmission's extensive range of gear couplings now includes ATEX-compliant models for hazardous areas. Flender ATEX-approved couplings include N-Eupex flexible jaw couplings, Arpex steel torsionally rigid couplings and Fludex mechanical soft start couplings. N-Eupex couplings compensate for shaft misalignment, are used in general mechanical engineering, and as high and low-speed couplings for pump drives and conveyors, with torque ranges from 19 to 6200Nm and 23 sizes.
In cases of wear to flexible components, N-Eupex couplings will turn freely without metal-to-metal contact, of particular benefit in hazardous areas.
Arpex all-steel couplings allow for radial, angular and axial shaft misalignments, are maintenance-free and have torque ranges from 5Nm up to 10MNm.
They are widely used in the paper and cement industries and in cooling towers.
They have a reduced backlash feature and offer lifetime operation when correctly aligned.
Fludex soft start couplings are ideal for accelerating large masses smoothly, with excellent shock damping properties and a power range up to 2500kW.
Suitable for medium and high torque applications in conveyors, mixers, drum drives and cement plants, Fludex couplings provide torque limitation during start and overload and have excellent vibration separation and shock damping characteristics.
These are just three ATEX-compliant options from Flender's extensive series of couplings.
Jaw couplings operate with zero backlash
An innovative braking solution for positioning applications using linear motion guide bearings is available from Motion Drives and Controls, the Warwick based brake and clutch specialist. Nexen's RB series spring-engaged/air-released rail brake is designed to match the rail profile of linear motion guides from a wide range of from manufacturers including THK, NSK, SKF, INA, Hiwin and Schneeberger. The rugged and compact brake has similar dimensions to the corresponding bearing carriage and is simply mounted on the existing rail to provide a convenient means for fast response, emergency stop and power-off braking.
The Nexen RB series profile rail brake is particularly suited to z-axis' vertically loaded positioning systems and the spring based brake will provide full braking even under power failure conditions.
The brake may also be used on leadscrew, ballscrew and belt driven positioning systems in place of rotary motor mounted brakes for a more compact solution with improved drive-train backlash and elasticity characteristics.
Rail brakes can also be used for linear motor positioners and actuators to prevent machine movement under power-off conditions and to improve stiffness during heavy machining.
The Nexen RB range includes a unique facing gap adjustment feature that ensures maximum braking contact throughout application life.
This feature also provides a convenient manual release mechanism to aid assembly and to simplify machine maintenance.
The spring-engaged brakes require a clean air supply of 5.5bar for release and are capable of infrequent and noncyclic dynamic braking such as emergency stops.
The brake facings only contact the nonbearing rail surfaces and the design provides an equal pressure on both sides of the rail to minimise unwanted forces.
With a life of over 1 million cycles and with no lubrication or periodic maintenance in most applications, the RB series is available in a wide range of models to provide a holding force from 400 to 2600N.
Ordering and specifying is easy - customers simply specify the linear motion guide manufacturers' model and part number and their braking force requirements.
The Nexen RB series profile rail brake is particularly suited to z-axis' vertically loaded positioning systems and the spring based brake will provide full braking even under power failure conditions.
The brake may also be used on leadscrew, ballscrew and belt driven positioning systems in place of rotary motor mounted brakes for a more compact solution with improved drive-train backlash and elasticity characteristics.
Rail brakes can also be used for linear motor positioners and actuators to prevent machine movement under power-off conditions and to improve stiffness during heavy machining.
The Nexen RB range includes a unique facing gap adjustment feature that ensures maximum braking contact throughout application life.
This feature also provides a convenient manual release mechanism to aid assembly and to simplify machine maintenance.
The spring-engaged brakes require a clean air supply of 5.5bar for release and are capable of infrequent and noncyclic dynamic braking such as emergency stops.
The brake facings only contact the nonbearing rail surfaces and the design provides an equal pressure on both sides of the rail to minimise unwanted forces.
With a life of over 1 million cycles and with no lubrication or periodic maintenance in most applications, the RB series is available in a wide range of models to provide a holding force from 400 to 2600N.
Ordering and specifying is easy - customers simply specify the linear motion guide manufacturers' model and part number and their braking force requirements.
Gearboxes extend to heavy duty applications
Shaft mounted helical gearboxes extend to heavy duty applications, matching the largest equivalent units from Fenner, Benzler Sala and Dodge.
Renold Gears has extended its SMXtra range of shaft mounted helical gearboxes, for heavy duty applications, to include sizes 11 and 12 that match the largest equivalent units from Fenner, Benzler Sala and Dodge. The ATEX approved range is now available in 12 sizes up to 235kW capacity with a choice of single or double reduction units with ratios of up to 25:1 and output speeds from 10 to 400rev/min. The SMXtra gearbox range is manufactured with hardened, profile ground single helical gears with high capacity bearings to ensure maximum power transmission, maximum load carrying capacity and longer life.
The units mount directly onto the shaft of the driven machine completely eliminating alignment problems as there is no need for couplings, base plates, slide rails or support structures.
They are ideally suited to heavy-duty applications in hostile environments and provide the ideal drive for many types of machinery.
Depending on requirements the SMXtra range can be fitted with advanced seals to optimise protection from dust and moisture.
Additionally, by reversing one element of the standard design, the seal can provide additional security to prevent the egress of oil into sensitive environments such as in food manufacturing.
Renold Gears has produced a new catalogue for all the gearboxes in its SMXtra range, including the new sizes 11 and 12, with details of the power ratings for each unit.
Renold Gears has extended its SMXtra range of shaft mounted helical gearboxes, for heavy duty applications, to include sizes 11 and 12 that match the largest equivalent units from Fenner, Benzler Sala and Dodge. The ATEX approved range is now available in 12 sizes up to 235kW capacity with a choice of single or double reduction units with ratios of up to 25:1 and output speeds from 10 to 400rev/min. The SMXtra gearbox range is manufactured with hardened, profile ground single helical gears with high capacity bearings to ensure maximum power transmission, maximum load carrying capacity and longer life.
The units mount directly onto the shaft of the driven machine completely eliminating alignment problems as there is no need for couplings, base plates, slide rails or support structures.
They are ideally suited to heavy-duty applications in hostile environments and provide the ideal drive for many types of machinery.
Depending on requirements the SMXtra range can be fitted with advanced seals to optimise protection from dust and moisture.
Additionally, by reversing one element of the standard design, the seal can provide additional security to prevent the egress of oil into sensitive environments such as in food manufacturing.
Renold Gears has produced a new catalogue for all the gearboxes in its SMXtra range, including the new sizes 11 and 12, with details of the power ratings for each unit.
Gearboxes deliver more torque
Cost-effective planetary/spur gearboxes deliver a massive 10Nm of flexible torque.
Rotalink, a world-leader in the design and manufacture of miniature transmission products, has launched two highly cost-effective planetary/spur gearboxes. Fabricated from advanced materials, dedicated gear profiles enable these unique compact units to deliver a massive 10Nm of flexible torque at a highly competitive cost, significantly enhancing market opportunities for original equipment manufacturers. Key to the massive torque available in the planetary output stage is Rotalink's unique gear tooth design, which also minimises noise and backlash.
Power transfer to the stainless steel output shaft is maximised by the wide choice of ratios available in the spur input stage - up to 12800:1 - coupled with low friction standard front ball race and nylon or steel ball race rear bearings.
The zinc-plated pressed steel case's standard four-point fixing gives OEMs solid but flexible fixing options.
The gearboxes are the Type 230, delivering up to 5Nm through input ratios from 25:1 to 1000:1, and the 260 delivering up to 10Nm through input ratios from 50:1 to 2000:1, both with alternative input ratios available up to 12800:1.The units are rated at 80C at the gear case and are available with AC, stepper or DC motors, single or dual line encoders are optional across the range.
With the introduction of these miniature gearboxes, Rotalink has successfully used its state-of-the-art design capability and strategic manufacturing and sourcing to deliver the compact, cost-effective product essential to 21st century motion control, automation and system integration OEMs.
Typical applications include peristaltic pumps, dispensing equipment, vending machines and similar dosing/metering systems where air and/or liquid valve control is required; analytical instrumentation, semiconductor manufacturing plant and other applications where low cost and maximum performance are required.
Rotalink, a world-leader in the design and manufacture of miniature transmission products, has launched two highly cost-effective planetary/spur gearboxes. Fabricated from advanced materials, dedicated gear profiles enable these unique compact units to deliver a massive 10Nm of flexible torque at a highly competitive cost, significantly enhancing market opportunities for original equipment manufacturers. Key to the massive torque available in the planetary output stage is Rotalink's unique gear tooth design, which also minimises noise and backlash.
Power transfer to the stainless steel output shaft is maximised by the wide choice of ratios available in the spur input stage - up to 12800:1 - coupled with low friction standard front ball race and nylon or steel ball race rear bearings.
The zinc-plated pressed steel case's standard four-point fixing gives OEMs solid but flexible fixing options.
The gearboxes are the Type 230, delivering up to 5Nm through input ratios from 25:1 to 1000:1, and the 260 delivering up to 10Nm through input ratios from 50:1 to 2000:1, both with alternative input ratios available up to 12800:1.The units are rated at 80C at the gear case and are available with AC, stepper or DC motors, single or dual line encoders are optional across the range.
With the introduction of these miniature gearboxes, Rotalink has successfully used its state-of-the-art design capability and strategic manufacturing and sourcing to deliver the compact, cost-effective product essential to 21st century motion control, automation and system integration OEMs.
Typical applications include peristaltic pumps, dispensing equipment, vending machines and similar dosing/metering systems where air and/or liquid valve control is required; analytical instrumentation, semiconductor manufacturing plant and other applications where low cost and maximum performance are required.
Conveyor upgrade is ahead of schedule
David Brown is ahead of time with its management contract to overhaul and upgrade the massive conveying system at Australia's Yallourn power station in Victoria.
David Brown is ahead of time with its management contract to overhaul and upgrade the massive conveying system at Australia's Yallourn power station in Victoria - in turn part of a huge scheme that involves diverting the Morwell River and upgrading and modernising Yallourn mine. With the two year contract for Yallourn Energy (now called TRUenergy Yallourn) stipulating completion of 15 conveyor drive assemblies by September 2006, the company has already completed that number as well as two gearbox spares in a clear demonstration of its asset management capabilities as well as its widely recognised technical prowess. Extra work was also required following a serious fire in December 2005 that necessitated the urgent refurbishment and relocation of a number of drive conveyors in order to keep Yallourn operating.
Concurrent with this urgent work was the refurbishment of critical drive gearboxes on a large overburden dredger which was undergoing upgrade at the same time - David Brown once again pulled out all of the stops to assist Yallourn Energy at this difficult time.
Each of the 25 year old conveyor drive assemblies comprise a 370 or 610kW electric motor, gearbox, brake and fluid coupling, to absorb shock loading of the conveyors, all mounted on a base plate.
Whereas the gearboxes, of various origins, were transported from Melbourne and overhauled at David Brown's own facilities at Bulli, New South Wales, the work on motors and couplings was subcontracted.
The smooth running of the project therefore demonstrates the project management skills and QA knowledge of David Brown's management team and workforce.
Yallourn Energy had initially approached David Brown early in 2004 when the process of site visits and tendering was initiated.
On signature of the contract in the following December the real work began which required fortnightly meetings on-site to ensure the smooth running of the project.
The principal's requirements of stringent QA documentation, refurbishment to EOM standard or better, full load testing off site plus incorporation of condition monitoring devices on all refurbished equipment were challenges met by David Brown.
David Brown has also undertaken additional refurbishment works on the Yallourn overburden dredger drives, all based on the main contract terms and conditions.
'The Yallourn contract has been a very steep learning curve for us', commented David Brown Project Manager Geoff Kinniburgh.
'We were confident that we had all of the necessary experience and expertise but quite frankly we had never handled a project of this scale and importance before'.
'In completing the project successfully and ahead of time, I believe we have built a real reputation for ourselves in the field of asset management that will stand us in good stead for the future'.
In fact, as the two-year project approaches completion, David Brown is confident that it will be able to negotiate a possible extra 6-year renewal having demonstrated a much greater degree of ownership of Yallourn problems and challenges than previous asset management companies.
Yallourn W power station, located 160km east of Melbourne, provides 24% of Victoria's power and 8% of the national requirement, and the adjacent open cut brown coal mine is the second largest in Australia with available reserves sufficient to meet the projected needs of the power station until 2032.
To allow unimpeded access to the coal field a project was begun five years ago to divert the Morwell River and was recently completed on time.
The 3.5km diversion is an impressive feat of modern engineering in itself and cost Au $122 million (over GBP 50 million).
The mine upgrade and modernisation programme was also undertaken in the five year period and involved works to fixed conveyor plant and infrastructure that totalled an additional Au $50 million (GBP 20 million).
David Brown is ahead of time with its management contract to overhaul and upgrade the massive conveying system at Australia's Yallourn power station in Victoria - in turn part of a huge scheme that involves diverting the Morwell River and upgrading and modernising Yallourn mine. With the two year contract for Yallourn Energy (now called TRUenergy Yallourn) stipulating completion of 15 conveyor drive assemblies by September 2006, the company has already completed that number as well as two gearbox spares in a clear demonstration of its asset management capabilities as well as its widely recognised technical prowess. Extra work was also required following a serious fire in December 2005 that necessitated the urgent refurbishment and relocation of a number of drive conveyors in order to keep Yallourn operating.
Concurrent with this urgent work was the refurbishment of critical drive gearboxes on a large overburden dredger which was undergoing upgrade at the same time - David Brown once again pulled out all of the stops to assist Yallourn Energy at this difficult time.
Each of the 25 year old conveyor drive assemblies comprise a 370 or 610kW electric motor, gearbox, brake and fluid coupling, to absorb shock loading of the conveyors, all mounted on a base plate.
Whereas the gearboxes, of various origins, were transported from Melbourne and overhauled at David Brown's own facilities at Bulli, New South Wales, the work on motors and couplings was subcontracted.
The smooth running of the project therefore demonstrates the project management skills and QA knowledge of David Brown's management team and workforce.
Yallourn Energy had initially approached David Brown early in 2004 when the process of site visits and tendering was initiated.
On signature of the contract in the following December the real work began which required fortnightly meetings on-site to ensure the smooth running of the project.
The principal's requirements of stringent QA documentation, refurbishment to EOM standard or better, full load testing off site plus incorporation of condition monitoring devices on all refurbished equipment were challenges met by David Brown.
David Brown has also undertaken additional refurbishment works on the Yallourn overburden dredger drives, all based on the main contract terms and conditions.
'The Yallourn contract has been a very steep learning curve for us', commented David Brown Project Manager Geoff Kinniburgh.
'We were confident that we had all of the necessary experience and expertise but quite frankly we had never handled a project of this scale and importance before'.
'In completing the project successfully and ahead of time, I believe we have built a real reputation for ourselves in the field of asset management that will stand us in good stead for the future'.
In fact, as the two-year project approaches completion, David Brown is confident that it will be able to negotiate a possible extra 6-year renewal having demonstrated a much greater degree of ownership of Yallourn problems and challenges than previous asset management companies.
Yallourn W power station, located 160km east of Melbourne, provides 24% of Victoria's power and 8% of the national requirement, and the adjacent open cut brown coal mine is the second largest in Australia with available reserves sufficient to meet the projected needs of the power station until 2032.
To allow unimpeded access to the coal field a project was begun five years ago to divert the Morwell River and was recently completed on time.
The 3.5km diversion is an impressive feat of modern engineering in itself and cost Au $122 million (over GBP 50 million).
The mine upgrade and modernisation programme was also undertaken in the five year period and involved works to fixed conveyor plant and infrastructure that totalled an additional Au $50 million (GBP 20 million).
Gears and actuators set for airshow outing
Harmonic Drive will be using the Farnborough International Airshow to promote its range of motion control solutions specifically designed for a wide range of aircraft applications.
Harmonic Drive will be using the Farnborough International Airshow as a platform to promote its range of motion control solutions that have been specifically designed and developed for a wide range of aircraft applications where high precision and reliability are critical. Just as importantly, the latest Harmonic Drive precision gears and actuators offer high levels of accuracy, high torque, high power density and a long operating life, all in lightweight and compact dimensions. Harmonic Drive precision gears have been designed to achieve a mean time between failures (MTBF) in aircraft applications of more than 500,000 hours, with an extremely low failure probability.
Furthermore, Harmonic Drive gears and actuators provide positional accuracy of less than one minute of arc and a repeatability of just a few seconds of arc, making them suitable for use in aircraft applications requiring exceptionally high positional and tracking accuracy.
Harmonic Drive technology is used in a wide range of aircraft applications including military fighter jets for active pilot inceptors providing force-feedback to the operator, and commercial aircraft such as the Airbus A380.
On show will be Harmonic Drive's range of HFUC component sets, which offer a unique combination of low weight, compact dimensions, high torque capacity, exceptional repeatability and positioning accuracy, and can be used in a wide range of operating temperatures, making them ideal for use in various aircraft applications including cargo handing and in-flight systems.
The new HFUC component sets incorporate a shortened Flexspline, resulting in a significant reduction of the axial length.
Furthermore, the new component sets feature high performance IH tooth profiles to provide increased torque capacity in comparison to standard gears that incorporate traditional involute gear tooth profiles.
The HFUC range is available in fifteen gear sizes from 8 to 100, with a choice of gear reduction ratios, from 30:1 up to 160:1.
In addition, the HFUC component sets feature the optimised design of Flexspline, circular spline teeth and wave generator bearing, to eliminate completely the effects of backlash, provide high torsional stiffness and offer a range of output torque capacities from just 0.9 to 3550Nm.
Harmonic Drive will also be demonstrating its FHA series miniature hollow-shaft servo actuators, which are believed to be the world's smallest servo actuators.
Measuring just 50mm3 in size and weighing only 0.4kg, these ultracompact actuators are capable of delivering 1.8Nm of torque from an integrated AC motor, gearbox and encoder, while featuring a choice of gear reduction ratios, including a 30:1 gear ration - the first of its kind to be achieved with hollow shaft servo actuators.
Specially developed for use in demanding aircraft applications where highly accurate motion control and high torque capacity are key, or where operating space or weight are restricted, the innovative FHA series features advanced Harmonic Drive technology to eliminate the effects of backlash.
Additionally, the integrated AC servo motor provides exceptionally smooth torque curves, with output speeds between 60 and 200rev/min.
By integrating a motor, gearbox, output bearing and encoder into a single, compact and lightweight unit, the FHA actuators allow aircraft design and manufacturing engineers to reduce dramatically both the time and cost associated with system design, specification and construction.
Perhaps as importantly, the new servo actuators allow considerable improvements to be made in system performance, precision and reliability, while minimising overall size and weight.
Harmonic Drive will be using the Farnborough International Airshow as a platform to promote its range of motion control solutions that have been specifically designed and developed for a wide range of aircraft applications where high precision and reliability are critical. Just as importantly, the latest Harmonic Drive precision gears and actuators offer high levels of accuracy, high torque, high power density and a long operating life, all in lightweight and compact dimensions. Harmonic Drive precision gears have been designed to achieve a mean time between failures (MTBF) in aircraft applications of more than 500,000 hours, with an extremely low failure probability.
Furthermore, Harmonic Drive gears and actuators provide positional accuracy of less than one minute of arc and a repeatability of just a few seconds of arc, making them suitable for use in aircraft applications requiring exceptionally high positional and tracking accuracy.
Harmonic Drive technology is used in a wide range of aircraft applications including military fighter jets for active pilot inceptors providing force-feedback to the operator, and commercial aircraft such as the Airbus A380.
On show will be Harmonic Drive's range of HFUC component sets, which offer a unique combination of low weight, compact dimensions, high torque capacity, exceptional repeatability and positioning accuracy, and can be used in a wide range of operating temperatures, making them ideal for use in various aircraft applications including cargo handing and in-flight systems.
The new HFUC component sets incorporate a shortened Flexspline, resulting in a significant reduction of the axial length.
Furthermore, the new component sets feature high performance IH tooth profiles to provide increased torque capacity in comparison to standard gears that incorporate traditional involute gear tooth profiles.
The HFUC range is available in fifteen gear sizes from 8 to 100, with a choice of gear reduction ratios, from 30:1 up to 160:1.
In addition, the HFUC component sets feature the optimised design of Flexspline, circular spline teeth and wave generator bearing, to eliminate completely the effects of backlash, provide high torsional stiffness and offer a range of output torque capacities from just 0.9 to 3550Nm.
Harmonic Drive will also be demonstrating its FHA series miniature hollow-shaft servo actuators, which are believed to be the world's smallest servo actuators.
Measuring just 50mm3 in size and weighing only 0.4kg, these ultracompact actuators are capable of delivering 1.8Nm of torque from an integrated AC motor, gearbox and encoder, while featuring a choice of gear reduction ratios, including a 30:1 gear ration - the first of its kind to be achieved with hollow shaft servo actuators.
Specially developed for use in demanding aircraft applications where highly accurate motion control and high torque capacity are key, or where operating space or weight are restricted, the innovative FHA series features advanced Harmonic Drive technology to eliminate the effects of backlash.
Additionally, the integrated AC servo motor provides exceptionally smooth torque curves, with output speeds between 60 and 200rev/min.
By integrating a motor, gearbox, output bearing and encoder into a single, compact and lightweight unit, the FHA actuators allow aircraft design and manufacturing engineers to reduce dramatically both the time and cost associated with system design, specification and construction.
Perhaps as importantly, the new servo actuators allow considerable improvements to be made in system performance, precision and reliability, while minimising overall size and weight.
Clutches cut down on downtime
Emerson Power Transmission has added three new products to the Browning torque overload device family.
Emerson Power Transmission has added three new products to the Browning torque overload device family: the Browning Torq/Pro X and Browning Torq/Pro Z torque overload devices, and the Browning Axial Gard linear overload device. In addition, the Browning Torq/Pro product line has been extended to include six new models. The products are all included in the new catalogue, MC-06, featuring the complete line of Browning and Morse mechanical clutches and torque overload devices.
The new catalogue provides general clutch and torque overload device information in order to help users select the proper device for their application.
The Browning and Morse product offerings provide the industry's broadest line of conveyor backstopping, overrunning and indexing clutches.
Both these product lines are designed to help increase production by reducing downtime.
The new Browning Torq/Pro X features a patent pending, innovative ball and pocket mechanism that nearly eliminates backlash.
The Torq/Pro X is an automatic reset torque overload device that has a bore range of 7-70mm, torque range of 1.7-784Nm and trip torque precision of +/-3%.
The Browning Torq/Pro Z is an overload device that allows the input side to continue to revolve freely after tripping.
The Torq/Pro Z is a manual reset torque overload device that has a bore range of 8-50mm, torque range of 2.4-450Nm and trip torque precision of +/-10%.
With the line expansion of the Browning Torq/Pro line, the bore range is 5-130mm, torque range of 3.5-7145Nm and trip torque precision of +/-10%.
The Browning Axial Gard linear overload device trips immediately an overload occurs, cutting off the axial load to the application.
The trip load setting range is 147-3430N, and trip torque precision is +/-15%.
Emerson Power Transmission has added three new products to the Browning torque overload device family: the Browning Torq/Pro X and Browning Torq/Pro Z torque overload devices, and the Browning Axial Gard linear overload device. In addition, the Browning Torq/Pro product line has been extended to include six new models. The products are all included in the new catalogue, MC-06, featuring the complete line of Browning and Morse mechanical clutches and torque overload devices.
The new catalogue provides general clutch and torque overload device information in order to help users select the proper device for their application.
The Browning and Morse product offerings provide the industry's broadest line of conveyor backstopping, overrunning and indexing clutches.
Both these product lines are designed to help increase production by reducing downtime.
The new Browning Torq/Pro X features a patent pending, innovative ball and pocket mechanism that nearly eliminates backlash.
The Torq/Pro X is an automatic reset torque overload device that has a bore range of 7-70mm, torque range of 1.7-784Nm and trip torque precision of +/-3%.
The Browning Torq/Pro Z is an overload device that allows the input side to continue to revolve freely after tripping.
The Torq/Pro Z is a manual reset torque overload device that has a bore range of 8-50mm, torque range of 2.4-450Nm and trip torque precision of +/-10%.
With the line expansion of the Browning Torq/Pro line, the bore range is 5-130mm, torque range of 3.5-7145Nm and trip torque precision of +/-10%.
The Browning Axial Gard linear overload device trips immediately an overload occurs, cutting off the axial load to the application.
The trip load setting range is 147-3430N, and trip torque precision is +/-15%.
Guideways with 30% more load capacity and rigidity
WMH Transmissions now offers Hiwin Linear Guides and Rails up to size 65, designed for load capacity and rigidity over 30% higher than other similar products
WMH Transmissions now offers Hiwin linear guides and Rails up to size 65. The HG series guideways are designed for load capacity and rigidity over 30% higher than other similar products with circular- arc groove and structure. The HG four row super heavy load range have a basic static load rating up to 457kN.
The full HG range of rails is stocked at their UK manufacturing and storage facility in Tamworth.
There is also a free of charge, in-house service to cut rails to any length on same day despatch.
Also at a very competitive price the rail ends can be ground to facilitate butt joints for continuous mounting, these are available for despatch on 24/48 hours lead-time.
WMH also offers from Hiwin the new EG four row low profile range, perfect for high speed automation equipment and other applications where space constraint is a concern.
These are available in sizes 15 to 30 with a basic static load rating up to 47.46kN.
To complement these products and services, WMH also offers the Hiwin range, stainless steel miniature guides and rails and ballscrews up to 80mm diameter with industry standard nuts.
Utilising its in-house machine shop, WMH also offers a machining service for ballscrews and leadscrews to suit its ex-stock Duki-Tec ballscrew support units, these screws can be machined to either standard recommended dimensions or customer specification.
WMH Transmissions now offers Hiwin linear guides and Rails up to size 65. The HG series guideways are designed for load capacity and rigidity over 30% higher than other similar products with circular- arc groove and structure. The HG four row super heavy load range have a basic static load rating up to 457kN.
The full HG range of rails is stocked at their UK manufacturing and storage facility in Tamworth.
There is also a free of charge, in-house service to cut rails to any length on same day despatch.
Also at a very competitive price the rail ends can be ground to facilitate butt joints for continuous mounting, these are available for despatch on 24/48 hours lead-time.
WMH also offers from Hiwin the new EG four row low profile range, perfect for high speed automation equipment and other applications where space constraint is a concern.
These are available in sizes 15 to 30 with a basic static load rating up to 47.46kN.
To complement these products and services, WMH also offers the Hiwin range, stainless steel miniature guides and rails and ballscrews up to 80mm diameter with industry standard nuts.
Utilising its in-house machine shop, WMH also offers a machining service for ballscrews and leadscrews to suit its ex-stock Duki-Tec ballscrew support units, these screws can be machined to either standard recommended dimensions or customer specification.
Flender supplies gear units to Byard
Power transmission specialist Flender has supplied gear units, Siemens motors and Zapex couplings for a steel pipe welding machine destined for Australia.
Power transmission specialist Flender has supplied gear units, Siemens motors and Zapex couplings for a steel pipe welding machine destined for Australia. Glasgow based manufacturer Byard is a spiral pipe mill specialist, and recently specified Flender's heavy duty FZG gear units for the first time. Byard has made 55 of these huge machines in its 35-year history, installed around the world for steel pipe manufacture as well as for structural piling pipe.
The Australian order was received in December 2005, and was being shipped at the time of writing.
The machine is due to be operational by October 2007.
Byard's sales director Graham Wilson described why the Flender units were selected: 'We looked at performance, quality, reliability and value, and the Flender units came top on this basis'.
'We have established an excellent reputation in this very specialised field, and our customers therefore have high expectations of us.' The Flender products comprised two B4DH 08 FZG gear units fitted with Siemens 7.5 kW braked motors and two H3SM 15 FZG gear units fitted with Zapex ZWN 465 output gear couplings, Motox KF 148 primary helical/bevel gear units and Siemens 37 kW motors.
All are vertically mounted, standing 1.9 m and 2.86 m tall respectively, but dwarfed in size by the Byard machine.
Flender Zapex all-steel couplings are double-engagement, allowing for angular, parallel and axial misalignment of shafts.
They have a torque range from 1300 Nm up to 10,000,000 Nm.
Power transmission specialist Flender has supplied gear units, Siemens motors and Zapex couplings for a steel pipe welding machine destined for Australia. Glasgow based manufacturer Byard is a spiral pipe mill specialist, and recently specified Flender's heavy duty FZG gear units for the first time. Byard has made 55 of these huge machines in its 35-year history, installed around the world for steel pipe manufacture as well as for structural piling pipe.
The Australian order was received in December 2005, and was being shipped at the time of writing.
The machine is due to be operational by October 2007.
Byard's sales director Graham Wilson described why the Flender units were selected: 'We looked at performance, quality, reliability and value, and the Flender units came top on this basis'.
'We have established an excellent reputation in this very specialised field, and our customers therefore have high expectations of us.' The Flender products comprised two B4DH 08 FZG gear units fitted with Siemens 7.5 kW braked motors and two H3SM 15 FZG gear units fitted with Zapex ZWN 465 output gear couplings, Motox KF 148 primary helical/bevel gear units and Siemens 37 kW motors.
All are vertically mounted, standing 1.9 m and 2.86 m tall respectively, but dwarfed in size by the Byard machine.
Flender Zapex all-steel couplings are double-engagement, allowing for angular, parallel and axial misalignment of shafts.
They have a torque range from 1300 Nm up to 10,000,000 Nm.
Web Site Promotion Services
Promotion is among the four major divisions of marketing. It includes advertising, personal selling, sales promotion and publicity, which all aim to increase sales, create brand equity and corporate image, compete with other products, or introduce a new product.
Marketing on the other hand, is a more general concept referring to the process of facilitating a “sale” of goods and services. Other divisions of marketing are product management, pricing and product distribution.
Today, as the use of the Internet gets so popular, businessmen are geared towards online marketing, which is essentially the process of achieving marketing objectives via the Internet. It includes Web site advertising as one of the many promotional strategies.
For most businesses, Web site advertising is the most efficient promotional method and their easiest gateway to the international market. Compared to conventional ways of advertising, it is proven to be more effective and less costly, especially for small and medium-sized companies.
In 2005, analysts say that online advertisement spending in the United States increased by twenty percent. They say that even a burgeoning company can spend more than $10 billion for online advertising at the outset of the business. The rising number of consumers with high-speed Internet connection contributed a lot to this phenomenon.
If you are planning to advertise through a Web site, employing the help of professional Web site promotion service providers is one of the wisest things you can do to ensure growth of your business and increase in sales. These service providers are experts in the field of Web site advertising and can dedicatedly plan, execute and monitor progress of promotional strategies for your site.
There are actually two basic categories of Web site promotion services: paid and free. It doesn’t follow that paid advertising is more beneficial as any free Web site advertising can be just as effective as paid. What is important is that each is able to generate more traffic to your site.
Among the Web site promotion services being offered online, free or paid, are search engine submission, link exchange, email marketing, Web directory submission, search engine optimization, pay-per-click, affiliate marketing, meta tag development and copywriting. Most companies combine all if not many of these services in a package.
Tips To Learn English
Do you have any plan to pursue your further education abroad? Will you need English for your career or your education? If so, you may wish to investigate your options for learning, or improving, your English skills.
The TOEFL Test: TOEFL (Test Of English as a Foreign Language) is a test used by many colleges, universities, government agencies and exchange and scholarship programs in the US, UK and Canada as a means of evaluating the language skills of a person whose first language is not English.
You can find TOEFL study guides easily online with other recommended resources listed. You may be able to access some of the sample tests and prepare with personal study. Or you may look for a class with an instructor to help you prepare for the test.
ESL Classes: ESL classes are a common means for students to learn English with group of classmates. These can be in the form of an evening class with various individuals attending or may be part of a college program during the day.
The course length and the topics covered will differ from country to country and school to school. Some summer programs are geared for international students to gain a basic grasp of the language before starting studies in English taught classes of the college or university.
Since the standards of passing a course, or the course material itself, will vary drastically, some students may feel that the language skills gained upon completing the course does not equip them to handle school work or social interactions adequately.
Some schools offer students and alternative of home-stay programs for students. Home-stay programs benefit the student by placing them for several weeks or months with a host family that speaks English. The student is then able to immerse him or herself in the culture and social speaking of the English country they are living in. There are also online ESL programs that may be suitable for distance education, especially if programs are not readily available in your area.
Private Tutors: Another popular method of learning English is with private tutors. The materials and methods used by ESL tutors will vary greatly and it is important to establish what material will be used and to feel comfortable with the tutor. Asking friends or other students for references can be helpful in finding a good tutor.
A combination of these English learning methods will be effective as well. You can take a summer course while staying with a home-stay host family and then arranging for private tutoring during the school year. Making an effort to use your new language skills regularly in social situations will improve your progress regardless of the program or course you are using.
Questions to Ask when Buying a Used Motor Home
When searching for your motor home, you need to be sure you keep your budget in mind. While doing this, also consider the age of the motor home and compare that with the selling price. If you are not sure if the price you are to pay is reasonable, it would be best to shop around from other providers of used motor homes to get a clear idea whether or not similar motor homes are selling at comparable rates.
It is also very important that you bring with you an expert auto mechanic in order to check if the engine of used motor home is still in good condition also to check the overall condition of the vehicle. What looks great on the outside could turn out to be a bad investment.
Ever consider buying in the internet?
As the age of technology makes internet purchasing easier and more appealing, consumers may dabble with the idea of buying via the internet. There are actually three types of sellers on the internet. Dealers who use the internet as their marketing channel, private motor home owners and eBay dealers. However, in buying online, customers need to be very careful during the bidding, you see unused vehicle sold online are being bid on by interested buyers but there are times when the online seller creates faux bidding in order to gain a great lumps of money.
I am not implying that all internet sales are shady. In fact, there are still trustworthy online providers that are very honest in their dealings. There are actually benefits derived from shopping online since you gain access a much wider selection of unused motor homes dealers plus while having the chance to engage in multiple price canvassing. This gives you the opportunity to search for unused motor homes that meet your qualifications and fall within the constraints of your budget. It is crucial to make sure that your expectations regarding the condition, features and options should all be put in writing as part of the agreement to purchase. You should also make sure to add, as part of your purchase agreement, that you reserve the right to have the vehicle inspected by an independent third party and your deposit should be refundable if the vehicle does not pass the inspection or if there are inconsistencies between the written expectations and the vehicle.
How much should I pay?
Price is often the most important issue on your mind when making this kind of purchase. Unfortunately, there is no simple answer of what you should pay toward your motor home purchase. There are factors that affect the prices of the unused motor homes like its age, condition, features, and availability. You can conduct searches on various traders and dealers to get a good approximation of what the asking price should be. You may also try to visit the NADA site and familiarize yourself with the average prices for used vehicles. The lowest retail price shown is equivalent to the discounted or the would-be market value of the vehicle. The wholesale and trade in value is measurably lower, and if ever there are any required expenditures that would be needed to restore the vehicle into its pristine condition then that should be deducted from the low retail price as listed in NADA. In using the NADA site, be sure to add some appropriate optional extras. The only problem is knowing in advance what optional extras and what was included as standard when the unit new. Be conservative when adding the options onto the base price.
What are the important parts to check when buying unused motor homes?
In buying a used motor home or any vehicle, it is important to conduct a thorough inspection of the vehicle. If you are not an expert in vehicles, then consult an expert. You also need to have a notepad or a checklist where to record your observations during the inspection process. This will make your inspection thorough, systematic, and at the same time you will be able to keep track of your findings.
There are multiple areas which you need to inspect like the chassis and the running gear which includes the tires, suspension components, the house or body of the motor home, air-condition unit, refrigerator, heating system, hot water heater leveling system and similar components. Other parts to inspect include the generator, batteries and inverter/converter if applicable. You also need to check the vital components such as brakes and tires and the life span components such as shocks, suspension components, hoses, belts and seals. For this reason, it really is in your best interests to consult a professional for inspection.
Report details product performance
A new technical report provides an instantaneous snapshot of the basic performance parameters of all available finished inventory from Midwest Motion Products.
The 'MMP off the shelf product performance summary' provides an instantaneous snapshot of the basic performance parameters of all available finished inventory from Midwest Motion Products, including DC motors, servomotors, DC gearmotors, linear actuators, motor speed controls, servo amplifiers and DC power supplies. Ideal for the OEM engineer faced with a short term development deadline, the report can be accessed quickly and easily to accurately determine the suitability of a readily available finished product. The information available for (12, 24, 36V and higher) motors and gearmotors includes: model number, diameter, input voltage, input current, output speed, output torque and quantity.
For linear actuators, the report provides model number, operating voltage, stroke length, gear ratio, stroke speed, output force and quantity.
The data provided for PWM Motor speed controls and brushed or brushless servo amplifiers includes operating voltage, peak and continuous output current, analogue command voltage and IP rating.
The DC power supply data includes the 'universal' AC input voltage range, the output voltage, output current, package size and the number of output terminals for multipurpose use.
The 'MMP off the shelf product performance summary' provides an instantaneous snapshot of the basic performance parameters of all available finished inventory from Midwest Motion Products, including DC motors, servomotors, DC gearmotors, linear actuators, motor speed controls, servo amplifiers and DC power supplies. Ideal for the OEM engineer faced with a short term development deadline, the report can be accessed quickly and easily to accurately determine the suitability of a readily available finished product. The information available for (12, 24, 36V and higher) motors and gearmotors includes: model number, diameter, input voltage, input current, output speed, output torque and quantity.
For linear actuators, the report provides model number, operating voltage, stroke length, gear ratio, stroke speed, output force and quantity.
The data provided for PWM Motor speed controls and brushed or brushless servo amplifiers includes operating voltage, peak and continuous output current, analogue command voltage and IP rating.
The DC power supply data includes the 'universal' AC input voltage range, the output voltage, output current, package size and the number of output terminals for multipurpose use.
Piezoelectric motor comes with tiny claims
The latest Squiggle motor from New Scale Technologies, is the smallest linear motor on the market, the company announced today. At 1.5 x 1.5mm, the new SQL-1.5 piezoelectric motor is half the size of competing micro-motors. It also offers a 20 gram push force and submicron position resolution, performing ten times better than its closest competitor on both counts.
'The SQL-1.5 opens a whole new range of performance for miniature electronic systems such as phone cameras and medical devices', said New Scale president David Henderson.
'Designers of leading edge mobile devices finally have a precise, reliable linear motor that fits within their size and power budgets'.
'They can add motion - and hence new capabilities - where they were unable to do so before'.
The SQL-1.5 has been designed into next-generation auto focus and optical zoom assemblies by leading camera module developers, who support the top tier handset manufacturers.
Focus and zoom capabilities have become an essential ingredient in the drive to deliver smaller, thinner handsets with the image quality of digital still cameras.
'Even by the most conservative handset sales forecasts, phone cameras alone represent a new market for one billion motors a year', Henderson said.
'The requirements of these cameras can not be met by current motor technologies'.
The SQL-1.5 is also of interest to medical device manufacturers for a new class of implantable drug pumps and micro-valves.
The motor itself is tiny, but its high precision is what enables the most dramatic reduction in overall device size.
It provides more precise valve control, which permits more concentrated medications and therefore smaller fluid reservoirs.
The patented ceramic motor design generates no magnetic fields and can be made of nonferrous materials, making it MRI-safe and image compatible.
'The SQL-1.5 opens a whole new range of performance for miniature electronic systems such as phone cameras and medical devices', said New Scale president David Henderson.
'Designers of leading edge mobile devices finally have a precise, reliable linear motor that fits within their size and power budgets'.
'They can add motion - and hence new capabilities - where they were unable to do so before'.
The SQL-1.5 has been designed into next-generation auto focus and optical zoom assemblies by leading camera module developers, who support the top tier handset manufacturers.
Focus and zoom capabilities have become an essential ingredient in the drive to deliver smaller, thinner handsets with the image quality of digital still cameras.
'Even by the most conservative handset sales forecasts, phone cameras alone represent a new market for one billion motors a year', Henderson said.
'The requirements of these cameras can not be met by current motor technologies'.
The SQL-1.5 is also of interest to medical device manufacturers for a new class of implantable drug pumps and micro-valves.
The motor itself is tiny, but its high precision is what enables the most dramatic reduction in overall device size.
It provides more precise valve control, which permits more concentrated medications and therefore smaller fluid reservoirs.
The patented ceramic motor design generates no magnetic fields and can be made of nonferrous materials, making it MRI-safe and image compatible.
Compact motor takes gears and electronics onboardhe new 42mm DR(G)-38312 family from Omnimotor combines the compact Shinano Kenshi BLDC motor with int
he new 42mm DR(G)-38312 family from Omnimotor combines the compact Shinano Kenshi BLDC motor with integrated electronics and spur gearbox. This 24V DC, 42mm square package is combined within a 61mm length. Gear ratios from 10 to 50:1 allow a maximum continuous torque of nearly 1Nm to be provided.
RoHS compliance combined with the provision of an integral motor connector make this a most customer-friendly motor.
Two basic version of the motor exist one with simple, functional electronics, the other including speed loop, 3 pulse/rev tacho output signal and clockwise/anticlockwise capability.
Once again, Shinano Kenshi combines its innovative Japanese development capability with low-cost Chinese manufacturing facility.
Applications for the new motor will include pumping and medical/biotech automated equipment.
These motors are available with customised winding configurations and driver configurations to match application requirements plus additional such value added features as drive gear/pulley, special shafts and leadwire/connector assemblies.
The DR(G)-38312 motors are available via Omnimotor and a full range of European distributors of Shinano Kenshi brand product which includes hybrid stepper and brushless DC motors.
Shinano Kenshi has manufacturing locations in Japan and China.
RoHS compliance combined with the provision of an integral motor connector make this a most customer-friendly motor.
Two basic version of the motor exist one with simple, functional electronics, the other including speed loop, 3 pulse/rev tacho output signal and clockwise/anticlockwise capability.
Once again, Shinano Kenshi combines its innovative Japanese development capability with low-cost Chinese manufacturing facility.
Applications for the new motor will include pumping and medical/biotech automated equipment.
These motors are available with customised winding configurations and driver configurations to match application requirements plus additional such value added features as drive gear/pulley, special shafts and leadwire/connector assemblies.
The DR(G)-38312 motors are available via Omnimotor and a full range of European distributors of Shinano Kenshi brand product which includes hybrid stepper and brushless DC motors.
Shinano Kenshi has manufacturing locations in Japan and China.
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