In a marketplace where power to size to weight ratios are now all important, this product is claimed to set new boundaries. Available in two lengths (44 and 54mm), the 25GST 82 and 25GT 82 motors benefit from the most powerful magnets available on the market, designed into an optimised magnetic circuit.
The compact 25GST delivers a continuous 27W and a permanent torque of 32mNm.
The 54mm long 25GT delivers 40W and a permanent torque of 43mNm.
The life of DC motors is always a subjective issue; however these motors are fitted with the Rotafente commutation system, which is ideally suited to applications requiring high continuous and peak torques, where high current densities have to be commutated, thus giving longer motor life.
All motors are fitted with an industry proven fibre wrapped high temperature coil, with preloaded ball bearings and a rugged stator structure; which enables the motors to have a very long working life in the harshest of environments typically around ambient temperatures ranging from -30 to +125C.
Their mechanical time constants and power to weight ratios are market leaders, and are ideally suited to applications in the medical device, medical diagnostics equipment, textile machines and automation equipment market segments.
Delta Line Europe offers a complete range of front end and rear end options which include a full range of customised gearboxes, spur and planetary gearboxes, brakes, encoders and an optional integrated RFI filter.
New gear systems offer higher strength
The Davall Spiradrive is a right-angled/offset drive, consisting of a gear and pinion. The pinion has fewer teeth than the gear and is of parallel or tapered screw form. The gear is a face type similar to a hypoid-offset spiral bevel.
This arrangement offers a wide range of gear ratios, with a greater number of continuously meshing teeth (than for a worm gear of similar size), resulting in higher strength and smoothness of action from a compact design.
Also, mounting requirements for Spiradrive are not as critical as for bevel or hypoid gears, ensuring maximum accuracy and positive backlash control.
Spiradrive is available in a standard range of gearboxes (motorised and overload protected), loose gear sets, or custom-designed and manufactured to specification.
This arrangement offers a wide range of gear ratios, with a greater number of continuously meshing teeth (than for a worm gear of similar size), resulting in higher strength and smoothness of action from a compact design.
Also, mounting requirements for Spiradrive are not as critical as for bevel or hypoid gears, ensuring maximum accuracy and positive backlash control.
Spiradrive is available in a standard range of gearboxes (motorised and overload protected), loose gear sets, or custom-designed and manufactured to specification.
Square design range is cost-effective alternative
Brown Group has a new range of square design worm reduction units. The BW-Q range of gearboxes is available in single-reduction, double-reduction and helical-worm formats, and all units are interchangeable with other leading square design makes. The units are available with 30-150mm centres with a ratio of 7:1 to 100:1 for single reduction and up to 10,000:1 in double reduction.
The gears are designed with an increased-width phosphor-bronze worm wheel to give extra strength, longer life and increased input power and output torque capacity.
This square design range complements the existing worm and helical gear range but can also be viewed as an extremely cost-effective alternative.
The gears are designed with an increased-width phosphor-bronze worm wheel to give extra strength, longer life and increased input power and output torque capacity.
This square design range complements the existing worm and helical gear range but can also be viewed as an extremely cost-effective alternative.
GWS right angle gearbox upgrade from Parvalux
Parvalux is continuously adding to its range of motors and motor gear units. The latest unit is the compact and powerful GWS right angle gearbox with a speed range of 0.5-26 rpm with torques up to 200Nm. The GWS gearbox has an envelope size of approximately 151(h) x 142(w) x 142(d) mm and is fitted, in its natural form, with a 25mm dia x 76mm long shaft incorporating a 6mm wide x 63mm long keyway.
Mounting is by means of four m10 tapped holes in the base of the gearbox or M6 x 19mm deep on the flange.
To complement the GWS unit, Parvalux offers a versatile range of permanent magnet motors as well as induction motors.
Such combinations of motors and GWS gearboxes have enabled Parvalux to provide industry with units that offer power in a compact design.
Typical applications for the GWS gearbox include traction units, winch and hoist motor gearboxes, conveyor drives, turntables and welding manipulator drives.
Mounting is by means of four m10 tapped holes in the base of the gearbox or M6 x 19mm deep on the flange.
To complement the GWS unit, Parvalux offers a versatile range of permanent magnet motors as well as induction motors.
Such combinations of motors and GWS gearboxes have enabled Parvalux to provide industry with units that offer power in a compact design.
Typical applications for the GWS gearbox include traction units, winch and hoist motor gearboxes, conveyor drives, turntables and welding manipulator drives.
Stock gearsets cut machine downtime
Gearbox Direct now holds a huge range of matched worm and wheel gearsets in stock. The gearsets are interchangeable with most leading brands of gearbox. The service is aimed mainly at large maintenance departments and commercial gearbox repairers and rebuilders, who will benefit from ex-stock availability and top quality worm gear sets that can be easily modified to suit virtually all gearboxes.
The service reduces the time for repairs from anything between 4 and 6 weeks to a matter of hours.
The speed of supply and variation available should help overcome the problems faced everyday by gearbox rebuilders and repairers.
In many instances these concerns are frustrated in their efforts to provide fast gearbox rebuilds by the waiting time for original parts, typically 4 to 6 weeks.
Gearbox Direct's versatile worm gearsets are designed to overcome this problem.
They can be easily modified to suit virtually all gearbox types with comparable ratios and centre distances, simply by matching both ends of the extended, unfinished shafts.
This can be undertaken by the repairer/rebuilder or by Gearbox Direct itself.
The comprehensive range of "off-the-shelf" gearsets is available in ratios from 5:1 to 70:1 and centres from 5 to 14in".
Special worms and wheels can also be manufactured to customer specifications.
For maximum efficiency and reliability, all the gearshafts are made from case-hardened alloy steel with ground involute-helicoids profiles.
The worm wheels are manufactured from centrifugally cast phosphor bronze.
Gearbox Direct will also manufactures made to order gearboxes and gearsets for non-standard applications.
The service reduces the time for repairs from anything between 4 and 6 weeks to a matter of hours.
The speed of supply and variation available should help overcome the problems faced everyday by gearbox rebuilders and repairers.
In many instances these concerns are frustrated in their efforts to provide fast gearbox rebuilds by the waiting time for original parts, typically 4 to 6 weeks.
Gearbox Direct's versatile worm gearsets are designed to overcome this problem.
They can be easily modified to suit virtually all gearbox types with comparable ratios and centre distances, simply by matching both ends of the extended, unfinished shafts.
This can be undertaken by the repairer/rebuilder or by Gearbox Direct itself.
The comprehensive range of "off-the-shelf" gearsets is available in ratios from 5:1 to 70:1 and centres from 5 to 14in".
Special worms and wheels can also be manufactured to customer specifications.
For maximum efficiency and reliability, all the gearshafts are made from case-hardened alloy steel with ground involute-helicoids profiles.
The worm wheels are manufactured from centrifugally cast phosphor bronze.
Gearbox Direct will also manufactures made to order gearboxes and gearsets for non-standard applications.
Lighter bevel helicals thanks to aluminium casings
Leading power transmission specialists Motovario have extended their range of bevel helicals to include two new larger sizes and more small sizes made with lightweight aluminium universal mounting casings. The larger sizes are designed for new markets, such as bulk material handling, conveyors and agitator/mixer applications where a robust cast iron casing is required with high torques and slow speeds through to lighter duties where the low weight of the aluminium casing lends itself for mounting directly on the drive shaft. The bevel helical range compliments Motovario's worm gearbox range with the added benefit of high efficiency at 96 per cent.
Motovario have been particularly successful with their bevel helical range due to the efficiency for electronic variable speed drives.
Although a bevel helical unit is more expensive than a wormbox, when the efficiency and required motor power are taken into account, they are cost effective, especially with electrical variable speed drives, since smaller controllers can be utilised.
"The reason why the small end of the market has been developed is that, with the development of high efficiency motors and the environmental needs to save energy, bevel helicals are going to be a main gearbox requirement in the 21st century," said Steve Horsfall, Managing Director of Motovario Ltd, based in Rushock, near Droitwich.
"Motovario is extending and developing its range of bevel helicals with an eye on the future.
The aluminium casings make them more cost effective.
"The iron age has passed and people now accept aluminium as not only being lightweight but also as a strong material such as used in lunar modules and new top of the range cars."
Features: - 8 sizes - Ratios from M.6/1 - Power ratings from 0.12KW to 30KW Inputs to suit any standard IEC, ac or dc motor Close coupled motor versions Foot mounting or flange mounting versions with hollow output bore or solid output shaft options
Motovario have been particularly successful with their bevel helical range due to the efficiency for electronic variable speed drives.
Although a bevel helical unit is more expensive than a wormbox, when the efficiency and required motor power are taken into account, they are cost effective, especially with electrical variable speed drives, since smaller controllers can be utilised.
"The reason why the small end of the market has been developed is that, with the development of high efficiency motors and the environmental needs to save energy, bevel helicals are going to be a main gearbox requirement in the 21st century," said Steve Horsfall, Managing Director of Motovario Ltd, based in Rushock, near Droitwich.
"Motovario is extending and developing its range of bevel helicals with an eye on the future.
The aluminium casings make them more cost effective.
"The iron age has passed and people now accept aluminium as not only being lightweight but also as a strong material such as used in lunar modules and new top of the range cars."
Features: - 8 sizes - Ratios from M.6/1 - Power ratings from 0.12KW to 30KW Inputs to suit any standard IEC, ac or dc motor Close coupled motor versions Foot mounting or flange mounting versions with hollow output bore or solid output shaft options
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