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 result or shaft input to hollow bore output
Input & Output 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 result shafts designed specifically for our worm equipment reduction boxes.

Our inventory also contains a broad selection of misalignment shaft couplings in in . and metric bore sizes for your worm gearbox program. Other ” and metric precision surface shafts can be found from stock.

The Ever-Power Benefit 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 consist of:
High 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 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 are available to your specifications
Demand a Quote for Precision Worm Gearboxes
We provide reliable, high performance worm gearboxes for almost all movement transfer applications. Order today, demand a quote, or contact Ever-Power for the worm equipment 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 aluminum housings and ball bearings on input and output. If you’re not sure which gear reduction box is best suited to your application, view our Buyer’s Information to see ten essential points to consider when choosing a gearbox. Another valuable reference, Inertia and the utilization 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 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
Result torque up to at least one 1,400 lbf.in.
Rated for input speeds up to 3,000 RPM
Backlash only 4 arc minutes
Flange Wormwheel Gearboxes
Flange gear reduction boxes have a concise footprint and produce an output at 90° from the input. Available in a range of sizes with single-ended or double-ended output shafts, and with standard 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 speeds up to 3,000 RPM
Backlash only 4 arc minutes
NEMA Flange Worm Drive Gearboxes
NEMA flange worm gearboxes include a compact aluminum body with a 90° result angle and are offered with reduction ratios which range from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs can be found, in addition to 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 as low as 4 arc minutes
Miniature Wormwheel Gearboxes
Miniature worm gear decrease boxes are greased forever 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.
Framework 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 in a single unit. Dual ball bearings and long lasting lubrication provide years of dependable high cycle performance. Select from three framework sizes with ratios ranging from 25:1 to 900:1. Metric sizes only.
Insight 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 manage demanding power transfer applications and is obtainable with a 5:1, 10:1 or 20:1 equipment ratio. Features consist of machined aluminium 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 Housing Speed Reducers
Assembled in a Glass filled Nylon Casing are financial yet deliver superior performance.

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