compact worm gearbox

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Using miniature gears, Ever-Power has designed and built unique, high accuracy mini gearboxes that can’t be found anywhere 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 custom micro gearboxes that were created and built to meet your unique specifications.
Contact us for the mini gearbox the application requires, or ask for 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 Equipment Drives
Flange Worm
Miniature Inline Spur Gearboxes | Micro Inline Spur Quickness Reducers
Inline Spur
Compact Worm
Compact Worm
Micro Gearbox Options
Gearboxes are also known as reducers, gear reducers, rate reducers, gear drives, and gearmotors. All conditions can be used pretty much interchangeably. Please note that the links for our little gear drives include information on the full selection of frame sizes for that series or design.
Bevel Box Micro Equipment Drive
Our bevel box miniature gear drives are application rated for the the best possible balance of efficiency and cost. Torque could be balanced to meet up your RPM and working life requirements. Lightweight with low backlash performance (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 offer an output shaft at 90° from the input, and so are obtainable in gear ratios from 1:1 to 40:1. Lightweight but durable, with machined light weight aluminum housings and hardened alloy metal 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 known as “shaft to bore gearboxes,” the unit provide a single insight shaft that protrudes from reverse sides of the casing; output is definitely a keyed bore. Standard single- and double-end shafts can be found and supplied with keys and retainer rings. 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 boosts 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 frame, with two result shafts perpendicular to the input shafts. Our mini 4 shaft worm gear drives deliver high efficiency overall performance with low backlash.
High efficiency: up to 82% at 1,000 RPM
Low backlash: as little as ≈2°
Available with equipment 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 create an output at 90° from the insight. They deliver superior overall performance in a wide variety applications and are built with little footprints, making them ideal for procedures where space is limited. 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: 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 can be found in two frame sizes, and so are rated for boosts to 3,000 RPM. Light weight aluminum housings and stainless gears and shafts make these inline spur gearboxes hard and corrosion resistant, for your most demanding applications.
Result torque: up to 125 oz.-inches
Low backlash: less than 15 arc minutes
Available with equipment ratios from 4.96:1 to 3600:1
Optional synchro cleats available
Compact Wormwheel Gearbox
These miniature correct angle worm equipment reducers deliver excellent performance with high efficiency, and feature rugged building for challenging power transfer procedures. Available in three gear ratios (5:1, 10:1, 20:1), our small worm gearboxes are designed in extremely compact footprints for applications where space is bound.
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 can engineer and manufacture a customized miniature gearbox to meet up 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 styles, reverse engineer a preexisting unit, or help you 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: Small is No Big Problem
Broadest selection of small gear reducers
Greased for life
Ruggedly built
Modifications and special ratios available
Custom small gearboxes made to suit
Input & Output Shafts
Input and result shafts with drive key and retainer rings can be supplied to your specifications for any of our hollow bore miniature gearboxes. We provide 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 E gearbox shafts.
For F series spur gearboxes, contact our application engineers to discuss your particular needs.
We offer a broad selection of misalignment shaft couplings in inch and metric bore sizes. ” and metric precision surface shafts are available 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 range of ratios from 1:1 to 30:1
1:1, 2:1 and 2.8:1 are not self locking, all other ratios are.
Max. output torques: 2 Nm to 17 Nm
Hand operation only
Direct coupling between servo engine and worm gear is among the crucial strengths of EP worm gearmotors, which combine DC engine technology with exceptional durability and wear resistance. Motor and gearbox were created as one single, compact unit. Thanks to their reduced current attract, these gearmotors deliver more accurate control of operating 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 Range of coupling flanges
We deliver worm gearboxes, spur gearboxes and planetary gearboxes with or without integrated linear business lead screw / ball screw adapted to your flexible modular concept.
Based on this we can select a wide selection of standard customizations to meet up the requirements of various properties that are essential for each application.
If your application requires 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, long life, high resistance to vibration, pressure or temperature, integrated linear screw, or a combination of this kind of properties, our product range with more than 1000 different standard gearboxes is most likely a good begin to have the ability to deliver a product that stands out in your favor.
Small gearboxes are Compact Worm Gearbox high-quality gearboxes for regular drives. The electric electric motor is integrated with the gearbox into a single device (the first equipment is directly on the engine shaft). Individual gearboxes for link with conventional IEC motors may also be supplied on request.
Due to the complexity of the gearboxes’ configuration, they cannot be purchased in our e-shop. Our specialists will be happy to help you make your selection. We will be happy to send you documentation or style 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 steel options possible
Special wishes possible
Ever-Power worm gearboxes have earned a reputation to be a business benchmark worldwide. Our success originated from our relentless drive for quality with state-of-the-artwork technology, all while offering worm gearboxes are affordable prices. High versatility accorded through a wide choice of mounting options, shaft configurations and engine 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 speed gear ratio. Being basic and compact in style, these gears can achieve higher gear ratio compared to the helical gears. These worm decrease gears having screw type characteristics are similar to helical gears, but its helix angle is typically comparatively bigger) and its body is normally quite long in the axial path. The gears in these gearboxes can be correct or left-handed dependant on the purpose.
Mounting choice include universal housing, aspect flanges, foot (horizontal and vertical), shaft mounted with torque arm. Obtainable in Solid shafts (single or double), with torque arm or torque limiter.
Top Quality Geared Motors. Ever-Power gearboxes and geared motors will be the electro-mechanical key components for low backlash, smoothly running and highly powerful drive systems.
Our high-performance gear units are designed to withstand the toughest industrial applications.
The apparatus housings are machined on all sides and invite diverse mounting positions and applications, making them much sought after in the industry. Because of this 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 by FEM (Finite Element Method). This tooth geometry guarantees 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 utilized for the same torque, and smaller gears with remarkable power density can also increase reliability. Ever-Power geared motors are consequently incredible space savers.
Gearing produced with such micro-geometric accuracy allows the gearing perform necessary for troublefree rolling get in touch with to be substantially decreased and then the gear backlash to end up being minimized.
Dual chamber shaft seals produced by Ever-Power are used as standard in parallel shaft, shaft installed and helical worm gears for a high level of tightness.
Ever-Power’s modular gear 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 could be supplied with free insight shaft, with hollow bore insight shaft and engine flange, and double decrease mixture units for slow velocity applications. Using cast iron housings, top quality bronze alloy worm wheels and long life bearings, reliability and performance are the key features of this range.
High Precision Right Angle Transmission
Long Lifetime
WIDE RANGE Of Ratios
Special Surface Treatments

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As one of leading manufacturers, suppliers and exporters of mechanical products in China, We offer reducers, sprockets, industrial and conveyor chain, belts, pulleys, gears, racks, gearboxes, motors, PTO Shafts, taper lock Bushing, vacuum Pumps, screw air compressors and many other products. Please contact us for details.

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As one of leading manufacturers, suppliers and exporters of mechanical products in China, We offer reducers, sprockets, industrial and conveyor chain, belts, pulleys, gears, racks, gearboxes, motors, PTO Shafts, taper lock Bushing, vacuum Pumps, screw air compressors and many other products. Please contact us for details.

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