small worm gearbox

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 insight 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 could be supplied to your specs 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 includes a broad selection of misalignment shaft couplings in inch and metric bore sizes for your worm gearbox app. Other inch 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 components. Features and advantages 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 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 higher
Solid aluminum housings
Ball bearings on 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 movement transfer applications. Purchase today, request a quote, or contact Ever-Power for the worm gear 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 aluminum housings and ball bearings on input and result. If you’re uncertain which gear reduction package is most effective to your application, watch our Buyer’s Guidebook to see ten essential points to consider when choosing a gearbox. Another precious reference, Inertia and the usage of Inertia Numbers, offers a formula for dealing 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 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 boosts to 3,000 RPM
Backlash as low as 4 arc minutes
Flange Wormwheel Gearboxes
Flange gear reduction boxes have a concise footprint and generate an output at 90° from the input. Obtainable in a range of sizes with single-ended or double-ended output shafts, and with regular ratios which range 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 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 framework with a 90° output angle and are offered with reduction ratios which range from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs are available, as well as 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 speeds up 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 input and output shafts and so are essentially two reduction gearboxes in one unit. Dual ball bearings and long term lubrication offer years of reliable high cycle performance. Pick 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 manage demanding power transfer applications and is available with a 5:1, 10:1 or 20:1 gear ratio. Features consist of 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°
Result torque up to 3.95 lbf.in
Lightweight – approximately 4oz
Low profile – only one 1.09 in high.
Economic Molded Glass Filled Housing Speed Reducers
Assembled in a Cup filled Nylon Housing are economic yet deliver superior performance.

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June 2024
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