The Complete RV Series Aluminum Worm Gearbox Range
The GBC RV series encompasses our full lineup of aluminum-housed worm reducer gearboxes — from the standard single-stage GBC-NRV and GBC-NMRV through to double-stage NMRV+NMRV and helical pre-stage PC+NMRV combinations. Each model is built around a precision-ground hardened steel worm meshing with a tin-bronze or nickel-bronze worm gear inside a die-cast aluminum alloy housing (sizes 025-090) or cast iron housing (sizes 110-185).
The aluminum square-box design delivers an outstanding strength-to-weight ratio with excellent natural heat dissipation, corrosion resistance, and a clean industrial appearance. All models share interchangeable mounting interfaces, making it easy to upgrade between series or combine stages as your application requirements evolve.
Browse All Models
Select a model below to view full specifications, dimensional drawings, selection guide, and pricing information.
Series Comparison at a Glance
| Model | Input | Output | Ratio | Housing | Ideal Application |
|---|---|---|---|---|---|
| GBC-NRV | Solid shaft | Hollow / Flange / Solid | 7.5 - 100 | Cast iron | Belt / chain driven systems |
| GBC-NMRV | IEC motor flange | Hollow / Flange / Solid | 7.5 - 100 | Aluminum alloy | Direct motor mounting |
| GBC-NRV-F | Solid shaft | Square flange FA / FB | 5 - 100 | Aluminum / Cast iron | Rigid flange-to-frame connection |
| GBC-NMRV-F | IEC motor flange | Square flange FA / FB | 5 - 100 | Aluminum / Cast iron | Motor + flange output |
| GBC-NRV-VS | Dual solid shaft | Hollow / Flange / Solid | 7.5 - 100 | Cast iron | Hand-crank / encoder / cascade |
| GBC-NMRV-VS | IEC flange + shaft ext. | Hollow / Flange / Solid | 7.5 - 100 | Die-cast iron | Motor + secondary drive / sync |
| NMRV + NMRV | IEC flange / Shaft | Hollow / Flange / Solid | 300 - 3,600 | Aluminum + Iron | Ultra-low speed, double self-locking |
| PC + NMRV | IEC flange / Shaft | Hollow / Flange / Solid | Up to 5,000 | Aluminum alloy | High efficiency + extreme ratio |
Industries We Serve
Our aluminum worm reducers are engineered for reliable operation across diverse industrial environments. The self-locking worm drive, IP55 sealing, and compact right-angle configuration make them a versatile choice for virtually any power transmission system requiring speed reduction and torque multiplication.
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Food & Beverage
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Packaging & Printing
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Automation & Robotics
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Textile & Dyeing
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Ceramics & Glass
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Environmental
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Automotive Mfg.
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Logistics & Parking
How to Choose the Right Model
Determine Torque & Ratio
Calculate required output torque (with service factor) and divide motor speed by desired output speed.
Select Input Type
Shaft input (NRV) for belts/chains, IEC flange (NMRV) for direct motor, VS for dual input, or PC for helical pre-stage.
Choose Output Config
Hollow shaft for direct mounting, square flange (F) for bolt-on, solid shaft for coupling, or torque arm.
Match Frame Size
Verify motor power and shaft diameter fit the gearbox input. Check our product pages for detailed dimension tables.
💡 Not sure which model to choose? Contact our engineering team with your application details — output torque, speed, motor type, and mounting space — and we will recommend the optimal configuration at no charge.
Request a Quotation
Tell us your requirements and our team will provide a competitive quotation within 12 hours. Customisation on shaft dimensions, output flanges, housing colours, and motor matching is available for all models.
Warranty: 12 months | ISO 9001:2015 | CE & SGS Certified | Shipping: Worldwide