15 different ratios which range from 3.5:1 to 100:1
Max. input speed: 1800 RPM
small worm gearbox output torque up to 190 in-lbs
Light weight Nylon housing
Lubricated for life
Shaft input to shaft result or shaft insight to hollow bore output
Input & Result Shafts for Worm Gearboxes
Input shafts and output shafts with drive keys and retainer rings could be supplied to your specs for just about any of our hollow bore gearboxes. We bring 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 in . and metric bore sizes for your worm gearbox program. Other in . and metric precision floor shafts are available from stock.
The Ever-Power Advantage for Worm Drive Gearboxes
Ever-Power has 30-plus years’ experience in production 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 attach input
NEMA mount flanges available
Rugged worm equipment reducers built for reliability in challenging applications
Permanently lubricated
Gearboxes are conservatively rated
Available 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, high performance worm gearboxes for most motion transfer applications. Purchase today, ask for a quote, or get in touch with Ever-Power for the worm gear 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 aluminium housings and ball bearings on insight and output. If you’re uncertain which gear reduction box is most effective to your application, watch our Buyer’s Guideline to see ten essential points to consider whenever choosing a gearbox. Another important reference, Inertia and the usage of Inertia Figures, offers a formula for dealing 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 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 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 range of sizes with single-ended or double-ended output 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
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
NEMA Flange Worm Drive Gearboxes
NEMA flange worm gearboxes include a compact aluminum frame 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, and also single-output or double-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 only 4 arc minutes
Miniature Wormwheel Gearboxes
Miniature worm gear decrease 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.
Frame sizes 14mm cubed and 20mm cubed
High Ratio Reduction Worm Gearboxes
High reduction worm gearboxes feature parallel insight and output shafts and are essentially two reduction gearboxes within a unit. Dual ball bearings and long term lubrication provide years of reliable high cycle performance. Pick from three framework sizes with ratios which range from 25:1 to 900:1. Metric sizes only.
Input speeds: up to 3,000 RPM
Torque values: 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 offered with a 5:1, 10:1 or 20:1 equipment ratio. Features include 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 1 1.09 in high.
Economic Molded Glass Filled Casing Speed Reducers
Assembled in a Cup filled Nylon Casing are financial yet deliver superior performance.