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 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 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 ” and metric bore sizes for your worm gearbox program. Other ” and metric precision floor shafts are available from stock.
The Ever-Power Benefit for Worm Drive Gearboxes
Ever-Power has 30-plus years’ experience in manufacturing gearboxes and other precision drive elements. 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 mount input
NEMA mount flanges available
Rugged worm equipment 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 upon input and output
Custom 90-degree gearboxes can be found to your specifications
Request a Quote for Precision Worm Gearboxes
We provide reliable, high performance worm gearboxes for all motion transfer applications. Purchase today, demand a quote, or contact 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 light weight aluminum housings and ball bearings on insight and result. If you’re uncertain which gear reduction box is best suited to your application, look at our Buyer’s Guide to see ten essential points to consider when choosing a gearbox. Another beneficial reference, Inertia and the use of Inertia Figures, offers a formulation for coping 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-ended or double-ended output 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 boosts to 3,000 RPM
Backlash as low as 4 arc minutes
Flange Wormwheel Gearboxes
Flange gear reduction 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 result 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 include a compact aluminum frame with a 90° output angle and are offered with reduction ratios ranging from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs can be found, in addition to single-output or double-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 boosts to 3,000 RPM
Backlash as low as 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 Reduction Worm Gearboxes
High reduction worm gearboxes feature parallel input and output shafts and are essentially two reduction gearboxes in a single unit. Dual ball bearings and long term lubrication offer years of dependable high cycle performance. Select from three frame sizes with ratios which range from 25:1 to 900:1. Metric sizes only.
Insight speeds: up to 3,000 RPM
Torque ideals: 2.2Nm to 34Nm
Low backlash: ≈2°
Compact Wormwheel Gearboxes
Our most compact worm drive gearbox is made to handle demanding power transfer applications and is offered with a 5:1, 10:1 or 20:1 gear ratio. Features include machined 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°
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 Glass filled Nylon Casing are financial yet deliver superior functionality.
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