compact worm gearbox

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Using miniature gears, Ever-Power provides designed and built exclusive, high precision mini gearboxes that can’t be found anywhere else. Our miniature gearboxes can be found in numerous configurations, which includes worm and wheel, cross axis helical, bevel, inline spur, and more. We can also provide custom micro gearboxes that are designed and created to meet your unique specifications.
E mail us for the mini gearbox your application requires, or demand a quote upon a customized micro gearbox.
Miniature Bevel Gearboxes | Micro Bevel Equipment Drives | Mini Bevel Gearboxes
Bevel Box
Miniature Cross Axis Helical Gearboxes | Cross Axis Helical Mini Gear
Cross Axis Helical
Miniature Shaft-to-Bore Worm Gearboxes & Speed Reducers
Shaft-to-Bore
Miniature 4 Shaft Worm Gearboxes | Mini 4 Shaft Worm Gear Motors
4 Shaft Worm
Miniature Flange Worm Gearboxes | Micro Flange Worm Gear Drives
Flange Worm
Miniature Inline Spur Gearboxes | Micro Inline Spur Rate Reducers
Inline Spur
Compact Worm
Compact Worm
Micro Gearbox Options
Gearboxes are also called reducers, gear reducers, acceleration reducers, equipment drives, and gearmotors. All terms can be used more or less interchangeably. Please be aware that the links for our little gear drives include information on the full selection of body sizes for that series or design.
Bevel Box Micro Equipment Drive
Our bevel package miniature equipment drives are program rated for the the best balance of efficiency and cost. Torque can be balanced to meet your RPM and operating life requirements. Light-weight with low backlash performance (as little as 1°, with option of 1/2”).
Result torque: up to 7 oz.-inches
Low backlash: ≈1°, option of 1/2”
Rated for input boosts to 2,000 RPM
Temperature range: -5° to 175°F (-20° to 79°C); optional to -40°F (-40°C)
Cross Axis Helical Miniature Gearbox
Ever-Power’ miniature cross axis helical gearboxes provide relatively high amounts of thrust in a concise package. They provide an output shaft at 90° from the input, and so are available in gear ratios from 1:1 to 40:1. Lightweight but durable, with machined light weight aluminum housings and hardened alloy steel gears.
High efficiency: up to 88% at 1,000 RPM
Low backlash: as low as ≤30 arc minutes
Rated for input boosts to 4,000 RPM
“Left hand” models available
Miniature 2 Shaft Worm Gearbox
Our miniature 2 shaft worm gearmotors are engineered for ≤30 arc mins of backlash or better. Also called “shaft to bore gearboxes,” the unit provide a single input shaft that protrudes from opposite sides of the casing; output can be a keyed bore. Compact Worm Gearbox Standard single- and double-end shafts can be found and given keys and retainer bands. An array of gear ratios and input sizes can be found to meet your needs.
High efficiency: up to 86% at 1,000 RPM
Low backlash: ≤30 arc minutes or better
Obtainable in ratios from 5:1 to 120:1
Rated for input speeds up to 3,000 RPM
Miniature 4 Shaft Worm Gearbox
Every miniature 4-shaft worm gearbox from Ever-Power features precision-machined hardened metal gears, solid aluminium housings, and long term lubrication. They offer two insight shafts on opposing sides of the body, with two result shafts perpendicular to the input shafts. Our mini 4 shaft worm gear drives deliver high performance functionality with low backlash.
High efficiency: up to 82% at 1,000 RPM
Low backlash: less than ≈2°
Available with gear ratios from 1:1 to 32:1
Rated for input boosts to 4,000 RPM
Miniature Flange Worm Gear Drive
These micro flange worm gearboxes generate an output at 90° from the input. They deliver superior efficiency in an amazing array applications and are built with small footprints, making them ideal for functions where space is bound. They offer high effectiveness with low backlash.
Gear ratios from 6.66:1 to 80:1
High efficiency: up to 83% at 1,000 RPM
Low backlash: only ≤4°
Max. input speed: 3,000 PRM
DC motor option available
Miniature Inline Spur Gearbox
Specifically engineered for encoder applications, Ever-Power micro inline spur gear drives are available in two frame sizes, and so are rated for boosts to 3,000 RPM. Light weight aluminum housings and stainless steel gears and shafts make these inline spur gearboxes difficult and corrosion resistant, for your many demanding applications.
Result torque: up to 125 oz.-inches
Low backlash: less than 15 arc minutes
Available with gear ratios from 4.96:1 to 3600:1
Optional synchro cleats available
Compact Wormwheel Gearbox
These miniature correct angle worm equipment reducers deliver superior performance with high efficiency, and feature rugged structure for challenging power transfer procedures. Available in three equipment ratios (5:1, 10:1, 20:1), our small worm gearboxes are designed in extremely small footprints for applications where space is limited.
90° output angle
Gear ratios: 5:1, 10:1, and 20:1
Up to 12.5 inch-lbs. of output torque
Max. input speed: 3,000 RPM
Small footprint: 1.5” x 1.5” x 1.08”
Custom Miniature Gearbox
Ever-Power may engineer and manufacture a custom miniature gearbox to meet up your unique specifications. We can produce custom micro gearboxes in virtually any configuration your application requires, with result torque levels as high as 900Nm. We are able to work from your own gearbox styles, reverse engineer a preexisting unit, or assist you to develop an all-new style that provides the performance you need. Demand a quote on a custom miniature gearbox or contact us to discuss your unique requirements.
The Ever-Power Advantage: Small is No Big Problem
Broadest collection of small gear reducers
Greased for life
Ruggedly built
Modifications and particular ratios available
Custom small gearboxes made to suit
Input & Output Shafts
Input and output shafts with drive important and retainer rings could be supplied to your specifications for any of our hollow bore miniature gearboxes. We offer a basic selection of one ended or double ended shafts to assemble in these gearboxes. All gearbox shafts are given keys and retainer rings.
For P and PF series worm and wheel gearboxes use our P/PF gearbox shafts.
For Electronic series crossed axis helical gearboxes use our Electronic gearbox shafts.
For F series spur gearboxes, contact our app engineers to go over your particular needs.
We provide a broad collection of misalignment shaft couplings in ” and metric bore sizes. Inch and metric precision surface shafts can be found from stock.
Die-cast zinc casing – Various models for hands operation
Compact Worm Gearboxes
4731 to 4742, 4746 to 4767
Perfect for use with crank handle
Main physical dimensions:
P/N 4731 to 4742 40mm x 40mm x 70mm
P/N 4747 to 4767 17mm x 35mm x 42mm
Wide variety of ratios from 1:1 to 30:1
1:1, 2:1 and 2.8:1 are not self locking, all the ratios are.
Max. output torques: 2 Nm to 17 Nm
Hand operation only
Direct coupling between servo motor and worm gear is one of the essential strengths of EP worm gearmotors, which combine DC motor technology with exceptional durability and wear resistance. Electric motor and gearbox are designed as one single, compact unit. Because of their reduced current pull, these gearmotors deliver more accurate control of working temperature and higher effectiveness.
45 W to 250 W rated output power
Gearbox centre-centre size 31 mm and 33 mm
Aluminium gearbox casing
Case-hardened, tempered and ground worm
High tin bronze worm gear
Steel shaft planetary gearboxes
Case-hardened and tempered steel gears
Low noise Selection of coupling flanges
We deliver worm gearboxes, spur gearboxes and planetary gearboxes with or without integrated linear lead screw / ball screw adapted to your flexible modular concept.
Based upon this we are able to select a wide selection of regular customizations to meet up the requirements of various properties that are essential for each application.
If your application takes a gearbox with some special property or home such as small dimensions or low weight in relation to power, high efficiency, quiet and vibration-free operation, extended life, high level of resistance to vibration, pressure or temperature, integrated linear screw, or a combination of this kind of properties, our product range with an increase of than 1000 different standard gearboxes is most likely a good start to be able to deliver something that stands out on your side.
Small gearboxes are high-quality gearboxes for regular drives. The electric engine is built-in with the gearbox into a single unit (the first equipment is on the engine shaft). Separate gearboxes for connection to conventional IEC motors can also be supplied on request.
Due to the complexity of the gearboxes’ configuration, they cannot be purchased in our e-shop. Our experts will be happy to help you create your selection. We are happy to send out you documentation or design a suitable set directly, on request.
VANE MOTORS WITH GEARBOXES
Combinations possible with all our vane motors
Coaxial gearbox
Planetary gearbox
Worm gearbox
ATEX combinations possible
Stainless options possible
Special wishes possible
Ever-Power worm gearboxes possess earned a popularity to be an industry benchmark worldwide. Our success came from our relentless drive for quality with state-of-the-artwork technology, all while offering worm gearboxes are affordable prices. High flexibility accorded through a broad choice of mounting options, shaft configurations and motor interfaces, makes the Ever-Power worm gearbox the default choice for the industry. The helical-worm and the double-worm edition, with or without the torque limiter, add up to the advantage, creating an extremely versatile drive system.
Ever-Power Worm gearboxes provide high torque with low swiftness gear ratio. Being simple and compact in style, these gears can achieve higher gear ratio compared to the helical gears. These worm reduction gears having screw type characteristics are similar to helical gears, but its helix angle is typically comparatively larger) and its own body is normally quite lengthy in the axial direction. The gears in these gearboxes could be correct or left-handed dependant on the purpose.
Mounting choice include universal housing, side flanges, foot (horizontal and vertical), shaft mounted with torque arm. Available in Solid shafts (one or dual), with torque arm or torque limiter.
EXCELLENT Geared Motors. Ever-Power gearboxes and geared motors are the electro-mechanical key elements for low backlash, efficiently running and highly powerful drive systems.
Our high-performance gear models are designed to withstand the toughest commercial applications.
The apparatus housings are machined on all sides and invite diverse mounting positions and applications, producing them much popular in the industry. Consequently our geared motors tend to be to be found as part of our customers own machines.
The smooth running of Ever-Power gear units and the outstanding load capacity of WATT teeth are achieved with 3D design supported simply by FEM (Finite Element Method). This tooth geometry guarantees optimum rolling contact under load.
The special tooth root design in mixture with tooth helix angle, tooth depth, the components used and surface finish maximizes load capacity. This high gearing capacity enables smaller tires to be used for the same torque, and smaller gears with extraordinary power density also increase reliability. Ever-Power geared motors are as a result incredible space savers.
Gearing produced with such micro-geometric precision allows the gearing perform necessary for troublefree rolling get in touch with to be substantially reduced and then the gear backlash to be minimized.
Double chamber shaft seals produced by Ever-Power are utilized as standard in parallel shaft, shaft installed and helical worm gears for a higher level of tightness.
Ever-Power’s modular equipment technology meets the requirements of advanced drive systems:
Excellent power density
Minimum backlash
Smooth running
Diverse mounting options
Maximum reliability
High variability
Precision Worm Gearboxes & Geared Motors
EP’s precision worm gearboxes are created for those more demanding applications where small size, high torque, high ratio, low backlash, low noise and long lifetime are required. Provided in 9 sizes, these worm gearboxes can be supplied with free insight shaft, with hollow bore input shaft and electric motor flange, and double decrease mixture units for slow quickness applications. Using cast iron housings, top quality bronze alloy worm wheels and long life bearings, reliability and efficiency are the key top features of this range.
High Precision Right Position Transmission
Long Lifetime
Wide Selection Of Ratios
Special Surface Treatments

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