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 result or shaft insight 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 specifications for just about any of our hollow bore gearboxes. We bring P Series gearbox output shafts designed particularly for our worm gear reduction boxes.
Our inventory also contains a broad selection of misalignment shaft couplings in inch and metric bore sizes for your worm gearbox program. Other in . and metric precision surface shafts are available from stock.
The Ever-Power Benefit for Worm Drive Gearboxes
Ever-Power has 30-plus years’ experience in production gearboxes and other precision drive elements. Features and benefits of our worm gears consist of:
High small worm gearbox efficiency correct angle worm gear reducers
Backlash: 4, 8, or 30 arc-min
Single shaft, double shaft, or flange install input
NEMA mount flanges available
Rugged worm gear 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 upon input and output
Custom 90-level gearboxes are available to your specifications
Request a Quote for Precision Worm Gearboxes
We provide reliable, high performance worm gearboxes for most motion transfer applications. Purchase today, request a quote, or contact Ever-Power for the worm equipment reducer you need.
See individual item listings for additional information and specifications.
Worm Drive Gearboxes for High Torque Applications
Our worm gearboxes are greased for life and feature solid light weight aluminum housings and ball bearings on insight and output. If you’re uncertain which gear reduction box is best suited to your application, look at our Buyer’s Instruction to see ten important points to consider whenever choosing a gearbox. Another precious reference, Inertia and the usage of Inertia Figures, 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. Obtainable ratios range between 5:1 to 120:1 with single-finished 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 only 4 arc minutes
Flange Wormwheel Gearboxes
Flange gear reduction boxes have a compact footprint and generate an output at 90° from the input. Obtainable in a variety 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
Result torque up to 1 1,400 lbf.in.
Rated for input boosts to 3,000 RPM
Backlash only 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 which range from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs can be found, along with 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 boosts 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 
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. Output: 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 Reduction 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 lasting lubrication offer years of reliable high cycle performance. Select from three body 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 compact worm drive gearbox is designed to deal with demanding power transfer applications and is available with a 5:1, 10:1 or 20:1 equipment ratio. Features include machined light weight aluminum housing and hardened metal 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
Lightweight – approximately 4oz
Low profile – only one 1.09 in high.
Economic Molded Glass Filled Casing Speed Reducers
Assembled in a Cup filled Nylon Housing are financial yet deliver superior performance.