15 different ratios ranging from 3.5:1 to 100:1
Max. input speed: 1800 RPM
Result 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 result shafts with drive keys and retainer rings can be supplied to your specifications 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 contains a broad selection of misalignment shaft couplings in in . and metric bore sizes for your worm gearbox software. Other inch and metric precision surface shafts are available from stock.
The Ever-Power Advantage for Worm Drive Gearboxes
Ever-Power has 30-in addition years’ experience in manufacturing small worm gearbox Gearboxes and other precision drive elements. Features and benefits 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 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 on input and output
Custom 90-level gearboxes can be found to your specifications
Request a Quote for Precision Worm Gearboxes
We provide reliable, powerful worm gearboxes for every motion transfer applications. Order today, demand 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 forever and feature solid aluminium housings and ball bearings on insight and output. If you’re uncertain which gear reduction package 
is most effective to your application, view our Buyer’s Guidebook to see ten essential points to consider whenever choosing a gearbox. Another important 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 a few minutes of backlash. Available 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
Result torque up to 1 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° result angle and so are offered with reduction ratios which range from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs can be found, 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 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. Output: up to 4,000 RPM
Low backlash: ≈2°
Result torque up to 3.95 lbf.in.
Framework 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 unit. Dual ball bearings and long term lubrication offer years of reliable high cycle performance. Pick from three framework 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 small worm drive gearbox is made to handle 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 steel 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 Housing Speed Reducers
Assembled in a Cup filled Nylon Housing are economic yet deliver superior efficiency.