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The new MCA range of brushless maintenance-free servomotors comprises 19 models across frame size 56 to 112, with a choice between natural ventilation and forced cooling. Standard options are brakes, resolvers, encoders and plug or terminal box connection. Enclosure is to IP54 but can be readily upgraded to IP65 on request.

Compared to synchronous motors, asynchronous models are more robust and the MCA series has particularly high overload capacities from five to more than ten times nominal torque.

Costs are lower as the construction does not use expensive rare-earth magnets.

Sizes are generally larger which leads to higher inertias and a performance that is less dynamic but still suiting most applications.

A further advantage is the ability to run at high speeds through field weakening, up to 8000rev/min on the MCA range.

Rated output torques range from 2 to 55Nm at speeds of 2000 to 4000rev/min.

The addition of a rear mounted blower increases the torque on a given frame size by a factor of two or more.

Lenze offers UL conformity as standard for the North American market, and a full range of pre-assembled system cables to speed installation.

An almost infinite range of solutions can be specified by combining MCA motors with Lenze G-motion gearboxes.

These include inline planetary gears with rated outputs up to 1000Nm, as well as helical and right-angle bevel designs.

Gear ratios are possible between 1.6 and 412.

Many combinations can be built from stock parts for fast delivery, and low backlash of typically 6-10arc-min is available.