NEMA 17 Closed loop Stepper with Gearbox: This compact geared closed-loop stepper motor has a frame size 42-48mm with rated current 2a, integrated with a KG series 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 17 Closed loop Stepper with Gearbox Specification

- Part Number: 42AI48EC-KGXX
- Step Angle: 0.9deg w/o gearbox
- Bi/Unipolar: Bipolar
- Holding Torque: 0.44Nm w/o gearbox
- Rated Current/phase: 2.0A
- Frame Size: 42x42mm
- Motor Length: 48mm
- Number of Leads: 4
- Lead Length: 1000mm
- Encoder Type: Incremental Optical
- Encoder Resolution: 1000CPR
- Gearbox Type: Planetary
- Gear Ratio: 4-100:1
- Efficiency: 96%-94%
- Backlash at No-load: 15arcmin-20arcmin
- Gearbox Length: 40mm-51mm
- Shaft Diameter: Φ8mm
- Shaft Length: 21.5mm
- Keyway Length: 14mm
- Stepper Drive: CL42C
Overall Size

Gearbox Length(L)=40mm for ratio 5/1, 10/1; 51mm for ratio 20/1, 50/1, 70/1, 100/1.
If you need a PDF data sheet, please send the email to: info@frankhumotor.com!
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