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Using miniature gears, Ever-Power offers designed and built unique, high accuracy mini gearboxes that cannot be found somewhere else. Our miniature gearboxes can be found in many configurations, which includes worm and wheel, cross axis helical, bevel, inline spur, and more. We can also provide customized micro gearboxes that are designed and built to meet your specific specifications.
Contact us for the mini gearbox your application requires, or demand a quote on a customized micro gearbox.
Miniature Bevel Gearboxes | Micro Bevel Gear 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 Equipment Drives
Flange Worm
Miniature Inline Spur Gearboxes | Micro Inline Spur Rate Reducers
Inline Spur
Compact Worm
Compact Worm
Micro Gearbox Options
Gearboxes are also known as reducers, gear reducers, speed reducers, equipment drives, and gearmotors. All terms can be used more or less interchangeably. Please note that the links for our small gear drives include details on the full selection of body sizes for that series or design.
Bevel Box Micro Gear Drive
Our bevel package miniature equipment drives are program rated for the ideal balance of efficiency and cost. Torque could be balanced to meet up your RPM and working life requirements. Light-weight with low backlash functionality (as little as 1°, with choice of 1/2”).
Output torque: up to 7 oz.-inches
Low backlash: ≈1°, option of 1/2”
Rated for input speeds up 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 levels of thrust in a concise package. They provide an result 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: only ≤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 minutes of backlash or better. Also called “shaft to bore gearboxes,” these devices provide a single insight shaft that protrudes from reverse sides of the casing; output is definitely a keyed bore. Standard one- and double-end shafts are available and given keys and retainer bands. An array of equipment 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
Available 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 steel gears, solid aluminium housings, and permanent lubrication. They provide two insight shafts on opposite sides of the frame, with two output shafts perpendicular to the input shafts. Our mini 4 shaft worm equipment drives deliver high performance overall performance with low backlash.
High efficiency: up to 82% at 1,000 RPM
Low backlash: as little as ≈2°
Available with gear ratios from 1:1 to 32:1
Rated for input speeds up to 4,000 RPM
Miniature Flange Worm Equipment Drive
These micro flange worm gearboxes generate an output at 90° from the input. They deliver superior performance in an amazing array applications and are built with little footprints, making them ideal for functions where space is bound. They offer high efficiency with low backlash.
Gear ratios from 6.66:1 to 80:1
High efficiency: up to 83% at 1,000 RPM
Low backlash: as low as ≤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 can be found in two frame sizes, and are rated for boosts to 3,000 RPM. Aluminum housings and stainless 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: as little as 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 gear reducers deliver superior performance with high efficiency, and show rugged construction for challenging power transfer procedures. Available in three gear ratios (5:1, 10:1, 20:1), our compact 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 customized miniature gearbox to meet your unique specs. We can produce custom micro gearboxes in any configuration your application requires, with output torque amounts as high as 900Nm. We can work from your gearbox styles, reverse engineer an existing unit, or assist you to develop an all-new style that provides the performance you will need. Request a quote on a custom miniature gearbox or e mail us to discuss your specific requirements.
The Ever-Power Advantage: Little is No Big Problem
Broadest selection 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 result shafts with drive important and retainer rings can be supplied to your specs for any of our hollow bore miniature gearboxes. We provide a basic selection of solitary ended or double ended shafts to assemble in these gearboxes. All gearbox shafts are supplied with 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 E gearbox shafts.
For F series spur gearboxes, contact our program engineers to discuss your particular needs.
We provide a broad selection of misalignment shaft couplings in inch and metric bore sizes. In . and metric precision ground shafts can be found from stock.
Die-cast zinc housing – 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 range 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 among the crucial strengths of EP worm gearmotors, which combine DC engine technology with exceptional sturdiness and wear resistance. Motor and gearbox were created as one single, compact unit. Because of their reduced current draw, these gearmotors deliver more accurate control of operating temperature and higher performance.
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 Range of coupling flanges
We deliver worm gearboxes, spur gearboxes and planetary gearboxes with or without integrated linear lead screw / ball screw adapted to our flexible modular concept.
Based upon this we can select a wide variety of standard customizations to meet up the requirements of varied properties that are essential for each application.
If your application requires a gearbox with some special residence such as for example small dimensions or low weight with regards to power, high efficiency, quiet and vibration-free operation, long life, high resistance to vibration, pressure or temperature, integrated linear screw, or a combination of this kind of properties, our item range with more than 1000 different standard gearboxes is probably a good start to have the ability to deliver a product that stands out in your favor.
Small gearboxes are high-quality gearboxes for standard drives. The electric motor is included with the gearbox into a single device (the first equipment is on the electric motor 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 professionals will be pleased to help you create your selection. We are happy to send out you documentation or design a suitable set directly, on demand.
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 status to be a business benchmark worldwide. Our achievement came from our relentless drive for quality with state-of-the-art technology, all and will be 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 market. The helical-worm and the double-worm version, with or without the torque limiter, soon add up to the advantage, creating a highly versatile drive system.
Ever-Power Worm gearboxes provide high torque with low rate gear ratio. Being basic and compact in design, these gears can perform higher gear ratio compared to the helical gears. These worm decrease gears having screw type characteristics are similar to helical gears, but its helix position is typically comparatively larger) and its body is generally quite long in the axial direction. The gears in these gearboxes could be right or left-handed dependant on the purpose.
Mounting option include universal housing, part flanges, foot (horizontal and vertical), shaft mounted with torque arm. Available in Solid shafts (single or double), 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 dynamic drive systems.
Our high-performance gear products are designed to withstand the toughest commercial applications.
The apparatus housings are machined on all sides and permit diverse mounting positions and applications, producing them much popular in the industry. As a result our geared motors tend to be to be found within our customers own devices.
The smooth running of Ever-Power gear units and the outstanding load capacity of WATT teeth are achieved with 3D design backed simply by FEM (Finite Element Method). This tooth geometry ensures optimum rolling contact under load.
The special tooth root style in combination with tooth helix angle, tooth depth, the materials used and surface finish maximizes load capacity. This high gearing capacity allows smaller tires to be used for the same torque, and smaller sized gears with remarkable power density also increase reliability. Ever-Power geared motors are consequently incredible space savers.
Gearing produced with such micro-geometric precision allows the gearing perform necessary for troublefree rolling contact to be substantially reduced and therefore the gear backlash to end up being minimized.
Double chamber shaft seals produced by Ever-Power are used as regular in parallel shaft, shaft mounted and helical worm gears for a higher level of tightness.
Ever-Power’s modular equipment technology meets certain 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 designed for those more demanding applications where small size, high torque, high ratio, low backlash, low noise and long lifetime are required. Offered in 9 sizes, these worm gearboxes can be supplied with free input shaft, with hollow bore input shaft and engine flange, and double decrease combination units for slow velocity applications. Using cast iron housings, high quality bronze alloy worm wheels and extended life bearings, reliability and functionality are the key features of this range.
High Precision Right Angle Transmission
Long Lifetime
Wide Selection Of Ratios
Special Surface Treatments

Click sight independent reviews regarding compact worm gearbox.