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Aluminum Worm Speed Reducers 2018-07-16T09:06:25+00:00

Aluminum Body Worm Speed Reducers

Economical aluminum body worm speed reducer provides highly reliable power transmission for general purpose applications. Designed, manufactured, and assembled in Italy’s famous gear production region, these worm gearboxes offer cost effective operation and superior performance over similar looking products.

  • Wormshafts: Hardened and ground alloy steel with Zi profile for better tooth contact
  • Wormwheels: Bronze alloy centrifugally cast onto a cast iron hub for higher strength
  • Bearings: Tapered roller bearings on the output for higher radial and axial load capacities
  • Oil Seals: Double lip NBR oil seals for extra protection. Viton available on request
  • Output Shaft: Hollow bore is standard, single and double insert shafts also available
  • Input Interface: NEMA, IEC, and servo motor adapters, as well as free input shaft, offered in all sizes
  • Motor Integration: Precision spider coupling provides fret-free, near-zero backlash motor shaft connection
  • Housings: Die cast aluminum for light weight, high strength and better heat dissipation
  • Modular Attachments: Helical input stages, a bolt-on output flange, torque arms, and integrated torque limiters provide maximum design versatility
  • 7 sizes in square design
  • 2 larger sizes in round design
  • 12 ratios from 5:1 to 100:1
  • Higher 2-stage ratios available
  • Standard NEMA or IEC motor adapters
  • Torque capacities up to 12000 inlbs
  • Power capacities up to 40 horsepower

What’s Next?

Top 10 Benefits of the Coupling Input Connection


1. Eliminates fretting corrosion common in quill mount.
2. Provides a near-zero backlash motor-to-reducer connection.
3. Reduces efficiency losses due to motor mounting misalignment.
4. Eliminates key/keyway wear in reversing applications.
5. One gearbox adaptable for NEMA, IEC, and servo motors.
6. One gearbox for multiple motor frame sizes.
7. Two bearing input support isolates motor bearings.
8. Elastomer element dampens vibration, reducing motor wear.
9. Motor heat transfer is minimized, increasing seal life.
10. Optional insert for ATEX explosion-proof applications.

Other Models Available

Why Choose a Varvel Speed Reducer?

There are many worm speed reducers in the market, from the traditional cast iron models made for years in America, to the new aluminum models coming from Asia. But none offer the design features, performance, and value that come with the Varvel worm gear reducer.

European engineering and workmanship assure highly reliable performance in a variety of applications. Ground gearing and precise assembly provide high efficiency operation while oversized bearings accommodate high radial and axial loads. And the single piece aluminum housing is light yet extremely strong.

All these benefits come with a competitive price that adds exceptional value and design versatility to your machine designs.

Don’t be confused by other gearboxes that look the same. It’s what’s inside that counts. You can rely on the Varvel design to meet your needs for right angle power transmission.

Sample Industries

  • Conveying
  • Material Handling
  • Processing
  • Packaging
  • Winches
  • and more…