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 insight to shaft output or shaft input to hollow bore output
Input & Output Shafts for Worm Gearboxes
Input shafts and result shafts with drive keys and retainer bands could be supplied to your specs for any of our hollow bore gearboxes. We bring P Series gearbox output shafts designed specifically for our worm gear reduction boxes.

Our inventory also contains a broad collection of misalignment shaft couplings in inch and metric bore sizes for your worm gearbox program. Other ” and metric precision ground shafts are available from stock.

The Ever-Power Benefit for Worm Drive Gearboxes
Ever-Power has 30-in addition years’ experience in production gearboxes and other precision drive parts. Features and benefits of our worm gears include:
High efficiency right 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 dependability in challenging applications
Permanently lubricated
Gearboxes are conservatively rated
Offered with ingress protection to IP65 or higher
Solid aluminum housings
Ball bearings upon input and output
Custom 90-level gearboxes can be found to your specifications
Request a Quote for Precision Worm Gearboxes
We provide reliable, high performance worm gearboxes for most motion transfer applications. Purchase today, ask for 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 forever and feature solid aluminium housings and ball bearings on input and result. If you’re not sure which gear reduction box is most effective to your application, look at our Buyer’s Guidebook to see ten essential points to consider when choosing a gearbox. Another important reference, Inertia and the usage of Inertia Statistics, offers a method for coping with inertia in worm gear selection.
Shaft to Bore Wormwheel Gearboxes
Shaft to bore worm gearboxes are engineered for ≤30 arc minutes of backlash. Offered 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
Output 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
Flange Wormwheel Gearboxes
Flange gear decrease boxes have a compact footprint and create an output at 90° from the input. Obtainable in a variety of sizes with single-ended or double-ended result shafts, and with regular ratios which range 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 boosts 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° result 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, as well as single-output or double-output 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 speeds up to 3,000 RPM
Backlash as low as 4 arc minutes
small worm gearbox Miniature Wormwheel Gearboxes
Miniature worm gear reduction boxes are greased forever and offered in metric sizes with ratios which range from 1:1 to 30:1. Obtainable 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°
Result torque up to 3.95 lbf.in.
Framework sizes 14mm cubed and 20mm cubed
High Ratio Decrease Worm Gearboxes
High reduction worm gearboxes feature parallel insight and output shafts and are essentially two reduction gearboxes in one device. Dual ball bearings and long lasting lubrication offer years of reliable high cycle performance. Pick from three frame sizes with ratios which range from 25:1 to 900:1. Metric sizes only.
Input speeds: up to 3,000 RPM
Torque ideals: 2.2Nm to 34Nm
Low backlash: ≈2°
Compact Wormwheel Gearboxes
Our most small worm drive gearbox is made to deal with demanding power transfer applications and is obtainable with a 5:1, 10:1 or 20:1 equipment ratio. Features include machined light weight aluminum housing and hardened metal gears. 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 – only one 1.09 in high.
Economic Molded Glass Filled Housing Speed Reducers
Assembled in a Glass filled Nylon Casing are economic yet deliver superior functionality.