Nema 23 Worm Gearbox 20:1 NMRV30 Worm Gear Motor Speed Reducer Motor for Nema 23 Stepper Motor
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Manuals and Documentation:
Gearbox Datasheet:
20:1 Worm Gearbox NMRV30 Worm Gear Speed Reducer 9mm Input Shaft Diameter
This NMRV30 worm gearbox has a 20:1 ratio, 18 Nm max output torque, ≤1° backlash, 73% efficiency, and a 14 mm hollow bore—fits NEMA 23 motors via 9 mm input shaft.
Gearbox Specifications
Manufacturer Part Number: NMRV30-G20-D9
Gearbox Type: Worm Gearbox
Gear Ratio: 20:1
Efficiency: 73%
Backlash at No-load: <=1°
Output Max.Permissible Torque: 18Nm(159.31lb-in)
Output Max. Radial Load: 0.94kN
Output Type: Hollow Bore
Output Bore Diameter: Φ14mm
Input Shaft Type: Key way
Input Shaft Diameter: Φ9mm
Input Shaft Max. Length: 25mm
Please note:
The output shaft is available, please contact our technical support for your requirements.
The gear ratios available for this gearbox are: 5:1, 7.5:1, 10:1, 15:1, 20:1, 25:1, 30:1, 40:1, 50:1, 60:1, 80:1 and 100:1.
| Gearbox Specification | |
|---|---|
| Output Shaft Diameter(mm) | 25mm |
| Input Shaft Diameter(mm) | 9mm |
| Output Shaft Type | Hollow Bore |
| Gear Ratio | 20:1 |
| Backlash at No-load(Max.°) | <=1° |
| Gearbox Type | Squre Worm Gearbox |







