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 input to shaft output or shaft insight to hollow bore output
Input & Result Shafts for Worm Gearboxes
Input shafts and output shafts with drive keys and retainer bands can be supplied to your specs for any of our hollow bore gearboxes. We bring P Series gearbox output shafts designed specifically for our worm equipment small worm gearbox reduction boxes.
Our inventory also includes a broad collection of misalignment shaft couplings in in . and metric bore sizes for your worm gearbox app. Other in . and metric precision ground shafts are available from stock.
The Ever-Power Advantage for Worm Drive Gearboxes
Ever-Power has 30-plus years’ experience in manufacturing gearboxes and other precision drive elements. 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 gear reducers built for reliability in challenging applications
Permanently lubricated
Gearboxes are conservatively rated
Obtainable with ingress protection to IP65 or higher
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, high performance worm gearboxes for almost all motion transfer applications. Purchase today, request a quote, or contact Ever-Power for the worm equipment 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 aluminium housings and ball bearings on insight and output. If you’re not sure which gear reduction container is most effective to your application, look at our Buyer’s Guidebook to see ten essential points to consider when choosing a gearbox. Another precious reference, Inertia and the Use of Inertia Numbers, offers a method for dealing with inertia in worm gear selection.
Shaft to Bore Wormwheel Gearboxes
Shaft to bore worm gearboxes are engineered for ≤30 arc minutes of backlash. Available ratios range from 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 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 reduction boxes have a concise footprint and produce an output at 90° from the input. Obtainable in a variety of sizes with single-ended or double-ended output shafts, and with standard ratios which range from 5:1 to 120:1. 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 only 4 arc minutes
NEMA Flange Worm Drive Gearboxes
NEMA flange worm gearboxes feature a compact aluminum framework with a 90° output angle and are offered with decrease ratios which range from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs are available, 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 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 for life and offered in metric sizes with 
ratios ranging 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°
Output 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 a single device. Dual ball bearings and long term lubrication offer years of reliable high cycle performance. Select from three framework 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 small worm drive gearbox is designed to manage demanding power transfer applications and is available with a 5:1, 10:1 or 20:1 equipment ratio. Features consist of 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°
Output torque up to 3.95 lbf.in
Lightweight – approximately 4oz
Low profile – only 1 1.09 in high.
Economic Molded Glass Filled Housing Speed Reducers
Assembled in a Glass filled Nylon Casing are economic yet deliver superior efficiency.