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 input to shaft output or shaft insight to hollow bore output
Input & Output Shafts for Worm Gearboxes
Input shafts and output shafts with drive keys and retainer bands can be supplied to your specs 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 small worm gearbox includes a broad selection of misalignment shaft couplings in ” and metric bore sizes for your worm gearbox application. Other inch and metric precision floor 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 components. Features and advantages of our worm gears consist of:
High efficiency right 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 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-level gearboxes are available to your specifications
Request a Quote for Precision Worm Gearboxes
We provide reliable, powerful worm gearboxes for all motion transfer applications. Order today, ask for 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 for life and feature solid light weight aluminum housings and ball bearings on insight and result. If you’re uncertain which gear reduction container is best suited to your application, look at our Buyer’s Information to see ten important points to consider when choosing a gearbox. Another important reference, Inertia and the usage of Inertia Statistics, offers a formulation for coping with inertia in worm gear selection.
Shaft to Bore Wormwheel Gearboxes
Shaft to bore worm gearboxes are engineered for ≤30 arc moments of backlash. Obtainable ratios range from 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
Output 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
Flange Wormwheel Gearboxes
Flange gear decrease boxes have a concise footprint and generate an output at 90° from the input. Available in a range of sizes with single-ended or double-ended result 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
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 include a compact aluminum frame with a 90° result angle and so are offered with decrease ratios ranging from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs can be found, as well as single-output or double-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 speeds up 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. Available 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.
Body 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 a single unit. Dual ball bearings and long term lubrication provide years of reliable high cycle performance. Pick from three body sizes with ratios which range from 25:1 to 900:1. Metric sizes just.
Insight 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 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 metal 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 Housing Speed Reducers
Assembled in a Glass filled Nylon Casing are economic yet deliver superior performance.