Alpha Gears Gearmotor Offers Significant Reduction in Inertia
April 11, 2006—The TPM from alpha gear drives Inc. is a geared motor containing a rotary actuator based on an AC servo motor and high precision planetary gearing.
The rotary actuator is characterized by a high dynamic response. With an overall length of 186 mm, the TPM 50 builds up a maximum output torque of 500 Nm at a mass moment of inertia of 2.9 kgcm2.
This high dynamic response is due to the 50% reduction in the actuators mass moment of inertia, according to the companys press release. This is because the rotor inertia is reduced by the low-speed motor and mass inertia on the gear side is reduced by about 90% because the gear pinion is directly integrated into the motor shaft, eliminating the need for a clutch.
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