VMRV Series
Worm Gear Speed Reducers

Reliably reduce speed and increase torque.

Vortex VMRV-Series Worm Gear Speed Reducers let you lower speed and boost torque in compact spaces. They are durable, reliable, and in stock. Vortex gives you the best of both worlds: quality and performance for your applications.

We’ve designed each Vortex Worm Gear Speed Reducer with:


Ground Gearing to give our gears a superior surface finish, reducing heat and friction inside the gearbox and allowing them to run quietly, transmit more horsepower, and last longer.

Metal-reinforced, spring-loaded, double-lip oil seals ride on plunge-ground seats minimizing oil leakage and providing longer seal life.

NEMA C input flanges allow easy integration with off-the-shelf electric motors. Drop-in replacement for metric dimension reducers like Motovario and other prominent European brands.

Synthetic Food-Grade Lubricant. Reducers come prefilled with lubricant designed to last the life of the reducer - no oil changes or maintenance required
(VMRV-110 and larger excluded).

Heat-sinking fins in our reducer housing lower the oil temperature and extend the life of your reducer, saving you money and time on maintenance and repairs.

What can you expect from VMRV-Series Worm Gear Reducers?

Lightweight Design

The aluminum housing and small footprint mean these boxes have a high input capacity in a light housing

Modular Design

Reducers can be mounted in a variety of ways and come ready to accept an array of accessories, from torque arms to output covers.

Huge Reductions / Small Space

Because these reducers are available in 100:1 reduction ratios, there is no need to mount multiple reducers to meet the needs of low-speed and high-torque applications.

Shaft Arrangement Options

Reducers are available in both hollow shaft and solid shaft (single and double) outputs to meet the needs of the application.

Protection from Wear and Corrosion

Vortex uses aluminum housings that feature a corrosion-resistant finish. This is paired with pre-lubricated, high quality, food-grade oil. This combination protects the reducers from corrosion and provides optimal lubrication for the whole life of the unit.

High strength shafts with ground bearing seats for longer bearing life.

Our one-piece shafts are made of heat-treated alloy steel for high strength. We use centerless ground bearing seats to provide ideal shaft fitment and extend bearing life.

Chat with us and discover the Vortex Quality difference.

We engineer our reducers to last longer and perform better. Whether you need strength, reliability, or flexibility, we have the solution for you. Don’t wait, chat with us today to get more information.

Strength. Reliability. Flexibility.

Questions? Chat with us »

We offer the accessories you need to fit your application.


Double and Single-Sided
Output Shafts


Torque Arm Kits


Output Cover Kits