NEMA 8 Hollow Shaft Stepper Motor with Encoder: This small size 20mm NEMA 8 hollow shaft closed-loop stepper motor with 1000cpr incremental optical encoder has a body length 38mm with 0.6A rated current & holding torque 0.018Nm. A hollow shaft with outer diameter Φ5mm & inner diameter Φ2.5mm is available and also a double shaft with the front shaft length 10mm and rear shaft length 7mm is designed.
NEMA 8 Hollow Shaft Stepper Motor with Encoder Specification
Part Number: 20AI38EC-KC1
Step Angle: 1.8deg
Bipolar/Unipolar: Bipolar
Holding Torque: 0.04Nm
Rated Current/phase: 0.6A
Driving Voltage: 12-24VDC
Frame Size: 20x20mm
Body Length: 53mm
Encoder Type: Incremental Optical
Encoder Resolution: 1000CPR
Shaft Type: Hollow Shaft
Inner Diameter: Φ2.5mm
Outer Diameter: Φ5mm
Front Shaft Length: 10mm
Rear Shaft Length: 7mm
Number of Leads: 4
Lead Length: 500mm
Weight: 80g
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