NEMA 11 Precise Geared Closed loop Stepper Motor: This small geared closed-loop stepper motor has a frame size 28-32mm with rated current 1a, integrated with a HP series high precision planetary gearbox & a 1000cpr resolution incremental optical encoder. It is an an ideal choice for the applications that require high torque or low speed but high precision motion control and positioning feedback.
NEMA 11 Precise Geared Closed loop Stepper Motor Specification

- Part Number: 28AI32EC-HPXX
- Step Angle: 1.8deg w/o gearbox
- Bi/Unipolar: Bipolar
- Holding Torque: 0.07Nm w/o gearbox
- Rated Current/phase: 1.0A
- Frame Size: 28x28mm
- Motor Length: 32mm
- Number of Leads: 4
- Lead Length: 500mm
- Encoder Type: Incremental Optical
- Encoder Resolution: 1000CPR
- Gearbox Type: Planetary
- Gear Ratio: 4-70:1
- Efficiency: 96%-94%
- Backlash at No-load: 10arcmin-15arcmin
- Gearbox Length: 38mm-46.5mm
- Shaft Diameter: Φ5mm
- Shaft Length: 20mm
- D-cut Length: 15mm
- Stepper Drive: CL42C
Overall Size

Gearbox Length(L)=38mm for ratio 5/1, 10/1; 44.5mm for ratio 20/1, 50/1, 70/1.
If you need a PDF data sheet, please send the email to: info@frankhumotor.com!
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