15 different ratios which range from 3.5:1 to 100:1
Max. input speed: 1800 RPM
Output torque up to 190 in-lbs
Light weight Nylon housing
Lubricated for life
Shaft insight to shaft result or shaft insight to hollow bore output
Input & Result Shafts for Worm Gearboxes
Input shafts and result shafts with drive keys and retainer bands can be supplied to your specs for any of our hollow bore gearboxes. We carry P Series gearbox output shafts designed specifically for our worm equipment reduction boxes.

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

The Ever-Power Advantage for Worm Drive Gearboxes
Ever-Power has 30-in addition years’ experience in manufacturing gearboxes and other precision drive parts. Features and advantages 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 install input
NEMA mount flanges available
Rugged worm equipment reducers built for reliability in challenging applications
Permanently lubricated
Gearboxes are conservatively rated
Offered with ingress protection to IP65 or more
Solid aluminum housings
Ball bearings upon input and output
Custom 90-degree gearboxes can be found to your specifications
Ask for a Quote for Precision Worm Gearboxes
We provide reliable, powerful worm gearboxes for every movement transfer applications. Purchase today, request a quote, or get in touch with 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 aluminium housings and ball bearings on input and result. If you’re uncertain which gear reduction package is best suited to your application, look at our Buyer’s Information to see ten essential points to consider whenever choosing a gearbox. Another useful reference, Inertia and the Use of Inertia Numbers, offers a method for coping with inertia in worm equipment selection.
Shaft to Bore Wormwheel Gearboxes
Shaft to bore worm gearboxes are engineered for ≤30 arc minutes of backlash. Available ratios range between 5:1 to 120:1 with single-finished or double-ended output shafts. Imperial and metric sizes.
High efficiency: up to 90% at 1,000 RPM
Output torque up to 1 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 generate an output at 90° from the input. Obtainable in a range of sizes with single-ended or double-ended output shafts, and with regular 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 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 include a compact aluminum body with a 90° output angle and so are offered with decrease ratios which range from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs are available, in addition to single-output or double-result shafts. Imperial and metric sizes.
High efficiency: up to 90% at 1,000 RPM
Result torque up to 1 1,400 lbf.in.
Rated for input boosts to 3,000 RPM
Backlash as low as 4 arc minutes
Miniature Wormwheel Gearboxes
Miniature worm gear reduction boxes are greased for life 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°
Result torque up to 3.95 lbf.in.
Body sizes 14mm cubed and 20mm cubed
High Ratio Decrease Worm Gearboxes
High reduction worm gearboxes feature parallel insight and output shafts and so are essentially two reduction gearboxes in a single device. Dual ball bearings and long lasting lubrication offer years of reliable high cycle performance. Select from three frame sizes with ratios which range from 25:1 to 900:1. Metric sizes just.
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 obtainable with a 5:1, 10:1 or 20:1 gear ratio. Features consist of machined aluminium 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 Casing Speed Reducers
Assembled in a Glass filled Nylon Housing are financial yet deliver superior overall performance.