GBC-NMRV + GBC-NMRV High Torque Double Worm Reduction Gearbox

✅ Ultra-High Ratios 300:1 to 3,600:1+

Two worm stages in series deliver extreme speed reduction — output speeds as low as 0.4 RPM from a 1,400 RPM motor.

✅ High Output Torque

The double reduction multiplies torque through both stages, delivering far greater output torque than any single-stage worm gearbox of equivalent size.

✅ Compact Integrated Assembly

Pre-assembled two-stage unit occupies less space and requires fewer mounting brackets than two separate gearboxes connected via coupling.

✅ Flexible Configuration per Stage

Each stage can be independently configured with VS, F, AS, or AB options to match your specific input/output requirements.

✅ 8 Mounting Positions

AS1, AS2, BS1, BS2, VS1, VS2, PS1, PS2 — maximum installation flexibility for any machine layout.

✅ Self-Locking on Both Stages

Double self-locking effect provides inherent holding capability even under heavy loads — ideal for lifting and vertical applications.

✅ Motor Matching Solutions

Our technical team provides complete motor + double gearbox matching, optimising ratio distribution between stages for best efficiency.

✅ Drop-In Replacement

Standard NMRV interface dimensions ensure compatibility with existing motor and equipment mounting points.

⭐⭐⭐⭐⭐

"We needed a 1,500:1 ratio for a slow-speed rotary kiln drive. The NMRV040+090 combination delivered exactly the torque we needed, and the double self-locking means we can hold position without any external brake. Excellent solution."

— David K., Process Engineer,

Cement Equipment · South Africa

⭐⭐⭐⭐⭐

"Replaced our old chain-drive speed reduction system with GBC-NMRV030+063 double worm units. Much more compact, completely enclosed, and maintenance-free by comparison. Running for 14 months without issues."

— Maria L., Plant Supervisor,

Wastewater Treatment · Spain

⭐⭐⭐⭐⭐

"The technical team helped us optimise the ratio split between first and second stage for best efficiency on our automated parking system. Communication was fast — always replied within hours. Very professional."

— Kenji S., Mechanical Designer,

Parking Systems · Japan

⚙️ GBC-NRV Shaft Input Worm Gearbox

Standard shaft-input worm reducer for coupling, belt, or chain-driven applications.

🔄 GBC-NMRV Flange Input Worm Gearbox

IEC flange-input worm gear reducer for direct motor mounting.

⚡ Three-Phase AC Induction Motors

IEC motors from 0.06–15 kW for direct coupling with GBC worm gearboxes.