Worm Gearbox


Wormwheel gearboxes go by several names, including 90-degree gearboxes, worm gear reducers and worm gearboxes. They feature a gear arrangement in which a gear in the form of a screw, also known as a worm, meshes with a worm gear (similar to a spur gear).
 
Worm gear reducers produce an output that is 90° from the input and can be used to transmit higher torque or reduce rotational speed. Most often, a worm gearbox has right hand threads; to change the direction of the output, a left-hand thread worm gearbox is required.

Ondrives.US designs and manufactures precision right angle worm gearbox systems in ten frames sizes in shaft to borehollow bore flange mountNEMA flangehigh ratiocompact, and miniature configurations. Custom worm gearbox systems are also available. Contact our application engineers to discuss your custom requirements.
 
Output torques as high as 420Nm are available. Most of our worm gear reducers are built with ≤30 arc-minutes backlash and can be supplied with as low as ≤4 arc-minutes backlash. NOTE: Worm gearboxes should not be used as speed increasers.
 

Request Your Quote for a Custom or Modified Standard

Order today or request a quote on the worm gearbox you need. Contact Ondrives.US to learn more. 

See individual product listings for additional information and specifications. 


Wormwheel Gearboxes for High Torque Applications  

Our worm gearboxes are greased for life and feature solid aluminum housings and ball bearings on input and output. If you’re not sure which worm gear reducer is best suited to your application, view our Buyer’s Guide to see ten important points to consider when choosing a gearbox. Another valuable reference, Inertia and the Use of Inertia Figures offers a formula for dealing with inertia in gearbox selection.

Shaft to Bore Wormwheel Gearboxes

Shaft to bore speed reducers are offered in several ratios from 5:1 to 120:1 and with single-ended or double-ended output shafts.  Imperial and metric sizes.
  • High efficiency: up to 90% at 1,000 RPM
  • Output torque up to 1,400 lbf.in.
  • Rated for input speeds up to 3,000 RPM 
  • Backlash as low as 4 arc minutes

Flange Wormwheel Gearboxes

Flange worm gearboxes have a compact footprint and produce an output at 90° from the input. Available in a range of sizes with single-ended or double-ended output shafts, and with standard ratios ranging from 5:1 to 120:1. Imperial and metric sizes.
  • High efficiency: up to 90% at 1,000 RPM
  • Output torque up to 1,400 lbf.in.
  • Rated for input speeds up to 3,000 RPM 
  • Backlash as low as 4 arc minutes

NEMA Flange Wormwheel Gearboxes

NEMA flange gearboxes are built with a compact frame with a 90° output angle and are offered with reduction ratios ranging from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs are available, as well as single-output or double-output shafts.  Imperial and metric sizes.
  • High efficiency: up to 90% at 1,000 RPM
  • Output torque up to 1,400 lbf.in.
  • Rated for input speeds up to 3,000 RPM 
  • Backlash as low as 4 arc minutes

Miniature Wormwheel Gearboxes

Miniature worm gear reducers are offered in metric sizes with ratios ranging from 1:1 to 30:1. Available in 3.00mm or 4.00mm shaft output options. Metric sizes only.
  • High efficiency: up to 82% at 1,000 RPM
  • Max. Output: up to 4,000 RPM
  • Low backlash: ≈2°
  • Output torque up to 3.95 lbf.in.
  • Frame sizes 14mm cubed and 20mm cubed

High Ratio Reduction Wormwheel Gearboxes

High reduction worm gearboxes feature parallel input and output shafts and are essentially two reduction gearboxes in a single unit. They are offered in three frame sizes with ratios ranging from 25:1 to 900:1. Metric sizes only.  
  • Input speeds: up to 3,000 RPM
  • Torque values: 2.2Nm to 34Nm
  • Low backlash: ≈2°

Compact Wormwheel Gearboxes

Our most compact worm gearbox is designed to handle demanding power transfer applications and is available with a 5:1, 10:1 or 20:1 gear ratio. Imperial sizes only.
  • High efficiency: up to 90% at 1,000 RPM
  • Max. input speed: 3,000 RPM
  • Low backlash: maximum ≈2°
  • Output torque up to 3.95 lbf.in
  • Lightweight – approximately 4oz
  • Low profile – in high.

Input & Output Shafts for Worm Gearboxes

Input shafts and output shafts with drive keys and retainer rings can be supplied to your specifications for any of our hollow bore gearboxes. We carry P Series gearbox output shafts designed specifically for wormwheel gear reducers.
 
We offer a broad selection of misalignment shaft couplings in inch and metric bore sizes for your worm gearbox application. Other inch and metric precision ground shafts are available from stock.

The Ondrives.US Advantage

  • High efficiency right angle worm gear reducers
  • Backlash: 4, 8, or 30 arc-min
  • Single shaft, double shaft, or flange mount input
  • NEMA mount flanges available
  • Rugged worm gear reducers built for reliability in challenging applications
  • Permanently lubricated
  • 30-plus years’ experience in manufacturing gearboxes
  • Gearboxes are conservatively rated
  • Available with ingress protection to IP65 or higher
  • Solid aluminum housings
  • Ball bearings on input and output
  • Custom 90 degree gearboxes are available to your specifications

Contact Ondrives.US for Precision Worm Gearboxes

We provide reliable, high performance worm gearboxes for all motion transfer applications. Order today,  request a quote, or contact Ondrives.US for the worm gear reducer you need.
 
© Ondrives.US Corp.
216 North Main Street
Freeport, New York 11520

Phone: 888 260-7466