Low-backlash, highly precise ac servomotor

Oct. 26, 2006
The TPM Series of ac servomotors from alpha gear drives Inc., Elk Grove Village, Ill., can handle highly dynamic moves and are half as long and weigh less than conventional servomotor gearheads.

Edited by Stephen Mraz

The TPM Series of ac servomotors from alpha gear drives Inc., Elk Grove Village, Ill. (alphagear.com), can handle highly dynamic moves and are half as long and weigh less than conventional servomotor gearheads. Ratios range from 21:1 to 91:1 and torques go from 15 to 425 Nm. Peak torque can be as high as 1,300 Nm. It works with most servocontrollers from leading manufacturers.

The unit is stiffer than most, thanks to a motor shaft that includes the pinion gear. The distance between the motor and pinion are also shorter. The resulting stiffness gives the gearmotor greater positioning accuracy and less than 1 arc-min of backlash. It is lubricated for life, UL listed, and needs no maintenance for the first 20,000 hr. It also has a multiturn absolute encoder, eliminating the need to return to home for referencing after a power loss or emergency stop.

Sponsored Recommendations

April 16, 2025
Clean. Compact. Less heat.
April 16, 2025
SEW-EURODRIVE Introduces DR2C motor, IE5 Ultra-Premium Efficiency Motor
March 31, 2025
Unlike passive products - made of simple carbon springs - the bionic prostheses developed by Revival Bionics are propulsive, equipped with a motor and an artificial Achilles tendon...
March 31, 2025
Electric drives are a key technology for the performance of machines, robots, and power tools. Download this guide for an introduction to high-quality mechatronic drive systems...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!