15 different ratios which range from 3.5:1 to 100:1
Max. input speed: 1800 RPM
Result torque up to 190 in-lbs
Light-weight Nylon housing
Lubricated for life
Shaft input to shaft output or shaft input to hollow bore output
Input & Output Shafts for Worm Gearboxes
Input shafts and output shafts with drive keys and retainer bands could be supplied to your specifications for just about any of our hollow bore gearboxes. We carry P Series gearbox output shafts designed specifically for our worm equipment reduction boxes.
Our inventory also includes a broad selection of misalignment shaft couplings in inch and metric bore sizes for your worm gearbox app. Other inch and metric precision surface shafts can be found from stock.
The Ever-Power Advantage for Worm Drive Gearboxes
Ever-Power has 30-plus years’ experience in production gearboxes and other precision drive components. Features and benefits of our worm gears include:
High efficiency correct angle worm gear reducers
Backlash: 4, 8, or 30 arc-min
Single shaft, dual shaft, or flange attach input
NEMA mount flanges available
Rugged worm equipment reducers built for reliability in challenging 
applications
Permanently lubricated
Gearboxes are conservatively rated
Available with ingress protection to IP65 or higher
Solid aluminum housings
Ball bearings on input and output
Custom 90-level gearboxes are available to your specifications
Ask for a Quote for Precision Worm Gearboxes
We provide reliable, powerful worm gearboxes for almost all motion transfer applications. Purchase today, demand a quote, or contact Ever-Power for the worm gear reducer you need.
See individual product listings for more information and specifications.
Worm Drive Gearboxes for High Torque Applications
Our worm gearboxes are greased for life and feature solid aluminum housings and ball bearings on insight and result. If you’re not sure which gear reduction container is most effective to your application, look at our Buyer’s Information to see ten essential points to consider whenever choosing a gearbox. Another important reference, Inertia and the Use of Inertia Numbers, offers a formulation for dealing with inertia in worm gear selection.
Shaft to Bore Wormwheel Gearboxes
Shaft to bore worm gearboxes are engineered for ≤30 arc a few minutes of backlash. Available ratios range between 5:1 to 120:1 with single-ended or double-ended result shafts. Imperial and metric sizes.
High efficiency: up to 90% at 1,000 RPM
Result torque up to at least one 1,400 lbf.in.
Rated for input boosts to 3,000 RPM
Backlash as low as 4 arc minutes
Flange Wormwheel Gearboxes
Flange gear decrease boxes have a concise footprint and produce an output at 90° from the input. Obtainable 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
Result torque up to at least one 1,400 lbf.in.
Rated for input speeds up to 3,000 RPM
Backlash as low as 4 arc minutes
NEMA Flange Worm Drive Gearboxes
NEMA flange worm gearboxes feature a compact aluminum body with a 90° output angle and so are offered with reduction ratios which range from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs are available, and also single-output or double-result shafts. Imperial and metric sizes.
High efficiency: up to 90% at 1,000 RPM
Output torque up to at least one 1,400 lbf.in.
Rated for input boosts to 3,000 RPM
Backlash only 4 arc minutes
Miniature Wormwheel Gearboxes
Miniature worm gear decrease boxes are greased forever and offered in metric sizes with ratios which range 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. Result: up to 4,000 RPM
Low backlash: ≈2°
Output torque up to 3.95 lbf.in.
Body sizes 14mm cubed and 20mm cubed
High Ratio Reduction Worm Gearboxes
High reduction worm gearboxes feature parallel insight and output shafts and so are essentially two reduction gearboxes within a device. Dual ball bearings and permanent lubrication offer years of dependable high cycle performance. Select from three body sizes with ratios which range from 25:1 to 900:1. Metric sizes only.
Insight speeds: up to 3,000 RPM
Torque ideals: 2.2Nm to 34Nm
Low backlash: ≈2°
Compact Wormwheel Gearboxes
Our most compact worm drive gearbox is designed to deal with demanding power transfer applications and is offered with a 5:1, 10:1 or 20:1 equipment ratio. Features include machined light weight aluminum housing and hardened steel gears. Imperial sizes just.
High efficiency: up to 90% at 1,000 RPM
Max. input speed: 3,000 RPM
Low backlash: maximum ≈2°
Result torque up to 3.95 lbf.in
small worm gearbox Lightweight – approximately 4oz
Low profile – only one 1.09 in high.
Economic Molded Glass Filled Casing Speed Reducers
Assembled in a Cup filled Nylon Casing are economic yet deliver superior functionality.