20:1 Worm Gearbox NMRV30-G20-D9 9mm Input Shaft Diameter Max 18Nm
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Manuals and Documentation:
Gearbox Datasheet:
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20:1 Worm Gearbox NMRV30-G20-D9 9mm Input Shaft Diameter Max 18Nm
This worm gearbox is designed for Nema 23 Stepper Motor or other 57mmx57mm size motor, the output shaft is offset by 90° from the drive shaft. The advantage for this gearbox is efficiency and self-locking. Besides big cases, no gap structure of box means a maintenance- free that is hermetically sealed. It prevents the lubricant from easily losing and going bad, and exchanging.
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.
Due to their relatively high backlash (1°), worm gearboxes are not suitable for positioning applications.
Physical Specification | |
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Frame Size(mm) | Nema 23 (57 x 57) |
Input Shaft Diameter(mm) | 9mm |
Gear Ratio | 20 |
Input Shaft Max. Length | 25mm |