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Using miniature gears, Ever-Power has designed and built unique, high precision mini gearboxes that can’t be found somewhere else. Our miniature gearboxes are available in numerous configurations, including worm and wheel, cross axis helical, bevel, inline spur, and more. We can also provide customized micro gearboxes that were created and built to meet your unique specifications.
Contact us for the mini gearbox your application requires, or ask for a quote upon 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 Gear Drives
Flange Worm
Miniature Inline Spur Gearboxes | Micro Inline Spur Speed 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 conditions can be used more or less interchangeably. Please note that the links for our little gear drives include details on the full range of frame sizes for that series or style.
Bevel Box Micro Equipment Drive
Our bevel package miniature equipment drives are program rated for the the best balance of performance and cost. Torque could 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”).
Output 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 levels of thrust in a compact package. They offer an result shaft at 90° from the input, and are obtainable 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 speeds up 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 known as “shaft to bore gearboxes,” these devices provide a single input shaft that protrudes from opposing sides of the housing; output is definitely a keyed bore. Standard one- and double-end shafts can be found and given keys and retainer rings. An array of gear ratios and insight sizes can be found to meet your preferences.
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 boosts 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 long lasting lubrication. They provide two insight shafts on opposing sides of the frame, with two result shafts perpendicular to the input shafts. Our mini 4 shaft worm gear drives deliver high effectiveness 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 Gear Drive
These micro flange worm gearboxes generate an output at 90° from the input. They deliver superior functionality in a wide variety applications and are built with small footprints, making them ideal for functions where space is limited. They offer high performance 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
Specially engineered for encoder applications, Ever-Power micro inline spur gear drives are available in two frame sizes, and so are rated for speeds up to 3,000 RPM. Aluminum housings and stainless gears and shafts make these inline spur gearboxes challenging and corrosion resistant, for your the majority of demanding applications.
Output torque: up to 125 oz.-inches
Low backlash: as little as 15 arc minutes
Available with equipment ratios from 4.96:1 to 3600:1
Optional synchro cleats available
Compact Wormwheel Gearbox
These miniature right angle worm equipment reducers deliver superior performance with high efficiency, and feature 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 compact 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
Compact footprint: 1.5” x 1.5” x 1.08”
Custom Miniature Gearbox
Ever-Power may engineer and produce a custom miniature gearbox to meet your unique specs. We can produce custom micro gearboxes in virtually any configuration your application requires, with output torque amounts as high as 900Nm. We are able to work from your own gearbox designs, reverse engineer an existing unit, or help you develop an all-new style that delivers the performance you need. Demand a quote on a custom miniature gearbox or contact us to discuss your specific 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 designed to suit
Input & Output Shafts
Input and result shafts with drive important and retainer rings can be supplied to your specifications for any of our hollow bore miniature gearboxes. We offer a basic selection of single ended or dual ended shafts to put together in these gearboxes. All gearbox shafts are given keys and retainer bands.
For P and PF series worm and wheel gearboxes use our P/PF gearbox shafts.
For E series crossed axis helical gearboxes use our E 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 in . and metric bore sizes. In . and metric precision surface shafts are available from stock.
Die-cast zinc housing – Various models for hands operation
Compact Worm Gearboxes
4731 to 4742, 4746 to 4767
Ideal 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 aren’t self locking, all other ratios are.
Max. output torques: 2 Nm to 17 Nm
Hand operation only
Direct coupling between servo electric motor and worm gear is one of the crucial strengths of EP worm gearmotors, which combine DC engine technology with exceptional sturdiness and wear resistance. Electric motor and gearbox are designed as you single, compact unit. Because of their reduced current pull, these gearmotors deliver more accurate control of working temperature and higher efficiency.
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 our flexible modular concept.
Based upon this we can select a wide selection of regular customizations to meet the requirements of varied properties that are important for each application.
If your application takes a gearbox with some special real estate such as small dimensions or low weight in relation to power, high efficiency, quiet and vibration-free operation, extended life, high resistance to vibration, pressure or temperature, integrated linear screw, or a combination of such properties, our product range with an increase of than 1000 different standard gearboxes is most likely a good begin to have the ability to deliver a product that stands out on your side.
Small gearboxes are high-quality gearboxes for regular drives. The electric engine is built-in with the gearbox right into a single device (the first equipment is directly on the electric motor shaft). Separate gearboxes for link with conventional IEC motors can also be supplied on request.
Due to the complexity of the gearboxes’ configuration, they can not be purchased inside our e-shop. Our specialists will be pleased to help you create your selection. We will be happy to send you documentation or style a suitable set directly, on ask for.
VANE MOTORS WITH GEARBOXES
Combinations feasible with all our vane motors
Coaxial gearbox
Planetary gearbox
Worm gearbox
ATEX combinations possible
Stainless steel options possible
Special wishes possible
Ever-Power worm gearboxes have earned a status to be an industry benchmark worldwide. Our success originated from our relentless drive for quality with state-of-the-art technology, all and will be offering worm gearboxes are affordable prices. High versatility accorded through a wide choice of mounting choices, shaft configurations and motor interfaces, makes the Ever-Power worm gearbox the default choice for the sector. The helical-worm and the double-worm version, with or without the torque limiter, add up to the advantage, creating a highly versatile drive system.
Ever-Power Worm gearboxes provide high torque with low rate gear ratio. Being simple and compact in style, these gears can perform higher gear ratio than the helical gears. These worm reduction gears having screw type qualities are similar to helical gears, but its helix position is typically comparatively bigger) and its body is normally quite long in the axial direction. The gears in these gearboxes could be correct or left-handed dependant on the purpose.
Mounting option include universal housing, side 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 will be the electro-mechanical key elements for low backlash, efficiently running and highly powerful drive systems.
Our high-performance gear systems are built to withstand the toughest industrial applications.
The gear housings are machined on all sides and invite diverse mounting positions and applications, producing them much popular in the industry. Consequently our geared motors are often to be found within 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 combination with tooth helix angle, tooth depth, the components used and surface finish maximizes load capacity. This high gearing capacity allows smaller wheels to be utilized for the same torque, and smaller sized gears with outstanding power density can also increase reliability. Ever-Power geared motors are consequently incredible space savers.
Gearing produced with such micro-geometric precision allows the gearing perform required for troublefree rolling contact to be substantially decreased and therefore the gear backlash to be minimized.
Dual chamber shaft seals developed by Ever-Power are utilized as regular in parallel shaft, shaft installed and helical worm gears for a higher level of tightness.
Ever-Power’s modular gear 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 life time are required. Offered in 9 sizes, these worm gearboxes could be supplied with free input shaft, with hollow bore insight shaft and engine flange, and double decrease mixture units for slow speed applications. Using cast iron housings, top quality bronze alloy worm wheels and long life bearings, reliability and overall performance are the key features of this range.
High Precision Right Angle Transmission
Long Lifetime
Wide Selection Of Ratios
Special Surface Treatments

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