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Your cart is empty. 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. 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.
Using shaft sleeve adaptors RV30-K11-D8 or RV30-K11-D6.35 to convert 11mm input diameter to 8mm or 6.35mm.
Gearbox Specifications
*Manufacturer Part Number: NMRV30-G15-D11
*Gearbox Type: Worm Gearbox
*Gear Ratio: 15:1
*Backlash at No-load: ≤1°
*Output Max.Permissible Torque: 18Nm(159.31lb-in)
*Output Max. Radial Load: 0.86kN
*Output Type: Hollow Bore
*Output Bore Diameter: Φ14mm
*Input Bore Type: Key way
*Input Bore Diameter: Φ11mm
*Input Shaft Max. Length: 25mm
*Weight: 1048g
*Efficiency: 76%
Gearbox efficiency is the theoretical calculation value, due to the manufacturing process and use, the actual efficiency is 85% to 95% of the theoretical value.
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, 10:1, 15:1, 20:1, 30:1, 50:1.
Due to their relatively high backlash (1°), worm gearboxes are not suitable for positioning applications.
Albert C Fernandez
2025-07-22 18:17:32
Didn't go on all the way and couldn't be removed. The 8mm to 11mm worked fine.
Kelly M.
2025-02-13 18:28:29
Extremely poor fit/finish. Super tight fit onto 8mm shaft and into the 14mm bore. Usable, but has a awful surface profile control due to a what looks like a very rough wire EDM process. This adapter stuck onto the 8mm shaft after being test fit only 1/4 of the way on. Its going to require a press to get into the proper location, and I know its never coming back off. Fit into the 14mm bore is also very rough, but it takes a lot less force.
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