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March 19, 2020

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 result or shaft insight to hollow bore output
Input & Output Shafts for Worm Gearboxes
Input shafts and result shafts with drive keys and retainer rings could be supplied to your specifications for just about any of our hollow bore gearboxes. We carry 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 inch and metric bore sizes for your worm gearbox app. Other in . and metric precision floor shafts can be found 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 benefits of our worm gears include:
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 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, powerful worm gearboxes for most motion transfer applications. Order today, request a quote, or get in touch with Ever-Power for the worm gear reducer you need.

See individual product listings for more information and specifications.
Worm Drive Gearboxes for High Torque Applications
Our worm gearboxes are greased forever and feature solid light weight aluminum housings and ball bearings on insight and result. If you’re not sure which gear reduction package is most effective to your application, watch our Buyer’s Instruction to see ten important points to consider when choosing a gearbox. Another useful reference, Inertia and the use of Inertia Statistics, 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 moments of backlash. Available 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 speeds up to 3,000 RPM
Backlash only 4 arc minutes
Flange Wormwheel Gearboxes
Flange gear decrease boxes have a concise footprint and create an output at 90° from the input. Available in a variety of sizes with single-ended or double-ended result 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 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 framework with a 90° result 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-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 boosts to 3,000 RPM
Backlash as low as 4 arc minutes
Miniature Wormwheel Gearboxes
Miniature worm gear reduction 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. 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 Decrease Worm Gearboxes
High reduction worm gearboxes feature parallel insight and output shafts and so are essentially two reduction gearboxes within a device. Dual ball bearings and permanent lubrication offer years of dependable high cycle performance. Select from three frame sizes with ratios ranging from 25:1 to 900:1. Metric sizes just.
Insight speeds: up to 3,000 RPM
Torque values: 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 obtainable with a 5:1, 10:1 or 20:1 gear ratio. Features include machined light weight aluminum housing and hardened steel 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 Casing Speed Reducers
Assembled in a Cup filled Nylon Casing are financial yet deliver superior functionality.

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