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 input to hollow bore output
Input & Output 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 particularly for our worm gear reduction boxes.
Our inventory also contains a broad collection of misalignment shaft couplings in ” and metric bore sizes for your worm gearbox application. Other inch and metric precision surface shafts are available from stock.
The Ever-Power Benefit for Worm Drive Gearboxes
Ever-Power has 30-in addition years’ experience in manufacturing gearboxes and other precision drive elements. Features and benefits of our worm gears include:
High efficiency correct 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 gear reducers built for dependability 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
Ask for a Quote for Precision Worm Gearboxes
We provide reliable, high performance worm gearboxes for almost all motion transfer applications. Order today, demand 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 forever and feature solid aluminium housings and ball bearings on input and output. If you’re uncertain which gear reduction package is most effective to your application, watch our Buyer’s Guidebook to see ten important points to consider whenever choosing a gearbox. Another important reference, Inertia and the Use of Inertia Numbers, 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 moments 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 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 decrease boxes have a concise footprint and create an output at 90° from the input. Available in a range 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 feature a compact aluminum framework with a 90° result angle and are offered with reduction ratios ranging 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 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 which range 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°
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 input and output shafts and so are essentially two reduction gearboxes in a single device. 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.
Input 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 made to handle demanding power transfer applications and is offered with a 5:1, 10:1 or 20:1 equipment ratio. Features consist of machined aluminum 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 1 1.09 in high.
Economic Molded Glass Filled Casing Speed Reducers
Assembled in a Glass filled Nylon Casing are financial yet deliver superior overall performance.
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