Design Features



Aerotech offers five standard models of hybrid, permanent magnet stepper motors. Covering the torque range of 0.3 to 2.6 N·m (38 to 370 oz·in), these motors are well-suited for virtually all applications that employ stepping and/or microstepping drives.

Aerotech\'s stepper motors meet NEMA frame size standards for flange-mounted size 23 and size 34 motors. High quality materials and construction ensure a long service life, even in harsh environments.

Standard Models

Standard models have flying leads, rear shaft extensions, and load-end shaft flats for secure load coupling. The motors have a standard black textured finish.

Optional rear housings are available that provide either a bulkhead connector or integral cable termination. Rear housing models include versions with a high-accuracy home marker encoder, standard optical encoder, and manual adjustment knob.

Home Marker Models

An optional home marker encoder can be added to the standard models. The home marker provides an inexpensive means of establishing a highly accurate (0.1 micron in most Aerotech positioning systems) home reference.

The home marker encoder is protected in a rugged rear motor housing that also provides either a connector (B versions) or integral cable/connector (C versions) termination of the encoder’s leads, as well as the motor and limit switch leads.

Optical Encoder Models

An optical encoder with 500 or 1000 ppr is available for the SM series. The three-channel (A, B, marker), amplified-sine or line-driver encoder is housed in a rugged rear motor housing. All leads, including the motor and limit switch leads, are terminated in a connector (B versions) or integral cable/connector (C versions).


Need help sizing your motor? Try Aerotech\'s Motor Sizer software to specify the ideal motor for your application.