NEMA 11 Hollow Shaft Closed Loop Stepper Motor: This small size 28mm NEMA 11 hollow shaft closed-loop stepper motor with 2500cpr incremental optical encoder has a body length 33mm with 1.0A rated current & holding torque 0.07Nm. A hollow shaft with outer diameter Φ8mm & inner diameter Φ3.7mm is available and also a double shaft with the front shaft length 16mm and rear shaft length 7.4mm is designed.
NEMA 11 Hollow Shaft Closed Loop Stepper Motor Specification
Part Number: 28HB33EC-1004K
Step Angle: 1.8deg
Bipolar/Unipolar: Bipolar
Holding Torque: 0.07Nm
Rated Current/phase: 1.0A
Driving Voltage: 12-24VDC
Frame Size: 28x28mm
Body Length: 47.4mm
Encoder Type: Incremental Optical
Encoder Resolution: 2500CPR
Shaft Type: Hollow Shaft
Inner Diameter: Φ3.7mm
Outer Diameter: Φ8.0mm
Front Shaft Length: 16mm
Rear Shaft Length: 7.4mm
Number of Leads: 4
Lead Length: 300mm
Weight: 150g
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