small worm gearbox

15 different ratios ranging 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 output or shaft insight to hollow bore output

Input shafts and output shafts with drive keys and retainer bands can be supplied to your specifications for any of our hollow bore gearboxes. We carry P Series gearbox output shafts designed specifically for our worm gear reduction boxes.

Our inventory also includes a broad collection of misalignment shaft couplings in inch and metric bore sizes for your worm gearbox application. 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 elements. 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 gear 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 on input and output
Custom 90-degree gearboxes are available to your specifications
Demand a Quote for Precision Worm Gearboxes
We provide reliable, powerful worm gearboxes for all movement transfer applications. Order today, ask for a quote, or contact Ever-Power for the worm gear reducer you need.

See individual product listings for additional information and specifications.
Worm Drive Gearboxes for High Torque Applications
Our worm gearboxes are greased forever and feature solid aluminum housings and ball bearings on insight and result. If you're uncertain which gear reduction package is best suited to your application, look at our Buyer's Guide to see ten essential points to consider whenever choosing a gearbox. Another important reference, Inertia and the Use 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 mins of backlash. Offered ratios range from 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 1 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 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 1 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 frame with a 90° output angle and so are offered with decrease ratios ranging 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
Result torque up to 1 1,400 lbf.in.
Rated for input speeds up to 3,000 RPM
Backlash only 4 arc minutes
Miniature Wormwheel Gearboxes
Miniature worm gear reduction boxes are greased forever and 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. 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 input and output shafts and so are essentially two reduction gearboxes in one device. Dual ball bearings and long term lubrication offer years of reliable high cycle performance. Pick from three body sizes with ratios ranging from 25:1 to 900:1. Metric sizes just.
Input 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 gear ratio. Features consist of machined light weight aluminum housing and hardened steel gears. Imperial sizes only.
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
Lightweight – approximately 4oz
Low profile – only 1 1.09 in high.
Economic Molded Glass Filled Casing Speed Reducers
Assembled in a Cup filled Nylon Housing are economic yet deliver superior overall performance.

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