NEMA 17 Precise Gearbox Stepper: This compact geared stepper motor has a frame size 42-48mm with rated current 1.68a, integrated with a HG series high precision planetary gearbox that has a wide range of gear ratio 3 to 100. It is an ideal choice for the applications that require high torque or low speed but high precision motion control.
NEMA 17 Precise Gearbox Stepper Specification

- Part Number: 42AI48-1684S-HGXX
- Step Angle: 1.8deg w/o gearbox
- Bi/Unipolar: Bipolar
- Holding Torque: 0.55Nm w/o gearbox
- Rated Current/phase: 1.68A
- Frame Size: 42x42mm
- Motor Length: 48mm
- Number of Leads: 4
- Lead Length: 500mm
- Gearbox Type: Planetary
- Gear Ratio: 3-100:1
- Efficiency: 96%-92%
- Backlash at No-load: 15arcmin-25arcmin
- Gearbox Length: 43mm-53.5mm
- Shaft Diameter: Φ8mm
- Shaft Length: 21.5mm
- Keyway Length: 14mm
- Stepper Drive: FLKH2D1228DC
Overall Size

Motor 4 Leads Connection: A+(Black), A-(Green); B+(Red), B-(Blue)
Gearbox Length(L)=43mm for ratio 5/1, 10/1; 53.5mm for ratio 20/1, 50/1, 100/1.
If you need a PDF data sheet, please send the email to: info@frankhumotor.com!
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