compact worm gearbox

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Using miniature gears, Ever-Power offers designed and built unique, high accuracy mini Compact Worm Gearbox gearboxes that cannot be found anywhere else. Our miniature gearboxes can be found in several configurations, which includes worm and wheel, cross axis helical, bevel, inline spur, and more. We are able to also provide customized micro gearboxes that were created 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 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 Quickness Reducers
Inline Spur
Compact Worm
Compact Worm
Micro Gearbox Options
Gearboxes are also known as reducers, gear reducers, acceleration reducers, gear drives, and gearmotors. All terms can be used more or less interchangeably. Please be aware that the links for our small gear drives include information on the full range of frame sizes for that series or design.
Bevel Box Micro Equipment Drive
Our bevel container miniature equipment drives are application rated for the the best balance of efficiency and cost. Torque could be balanced to meet your RPM and working life requirements. Light-weight with low backlash functionality (less than 1°, with choice of 1/2”).
Result 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 compact 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 long lasting, 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 minutes of backlash or better. Also known as “shaft to bore gearboxes,” the unit provide a single input shaft that protrudes from opposite sides of the housing; output is certainly a keyed bore. Standard solitary- and double-end shafts can be found and supplied with keys and retainer bands. 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 permanent lubrication. They provide two input shafts on opposite sides of the framework, 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: less than ≈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 produce 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 operations 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: 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 are rated for boosts to 3,000 RPM. Light weight aluminum housings and stainless steel gears and shafts make these inline spur gearboxes challenging and corrosion resistant, for your most demanding applications.
Result 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 correct angle worm gear reducers deliver superior performance with high efficiency, and show rugged construction for challenging power transfer operations. Available in three equipment ratios (5:1, 10:1, 20:1), our compact worm gearboxes are built 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
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 up your unique specifications. We can produce customized micro gearboxes in any configuration the application requires, with output torque levels as high as 900Nm. We can work from your gearbox styles, reverse engineer an existing unit, or help you develop an all-new style that delivers the performance you will need. Ask for a quote on a customized miniature gearbox or e mail 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 unique ratios available
Custom small gearboxes designed to suit
Input & Output Shafts
Input and output shafts with drive essential and retainer rings can be supplied to your specs for any of our hollow bore miniature gearboxes. We offer a basic selection of one ended or double ended shafts to put together 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 E series crossed axis helical gearboxes use our E gearbox shafts.
For F series spur gearboxes, contact our application engineers to go over your particular needs.
We offer a broad collection of misalignment shaft couplings in inch and metric bore sizes. ” and metric precision ground shafts are available from stock.
Die-cast zinc housing – Various models for hand 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 aren’t 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 important strengths of EP worm gearmotors, which combine DC motor technology with exceptional toughness and wear resistance. Electric motor and gearbox are designed as one single, compact unit. Thanks to their reduced current pull, 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 your flexible modular concept.
Based on this we can select a wide variety of regular customizations to meet the requirements of various properties that are important for each application.
If your application takes a gearbox with some special real estate such as for example 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 mixture of such properties, our product range with more than 1000 different standard gearboxes is most likely a good begin to be able to deliver a product that stands out in your favor.
Small gearboxes are high-quality gearboxes for standard drives. The electric engine is included with the gearbox into a single unit (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 are happy to send out you documentation or style the right 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 steel 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-artwork 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 sector. The helical-worm and the double-worm version, 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 velocity gear ratio. Being basic and compact in design, these gears can achieve higher gear ratio compared to the helical gears. These worm reduction gears having screw type characteristics act like helical gears, but its helix position is typically comparatively bigger) 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 choice include universal housing, side flanges, foot (horizontal and vertical), shaft mounted with torque arm. Obtainable in Solid shafts (single or dual), with torque arm or torque limiter.
Top Quality Geared Motors. Ever-Power gearboxes and geared motors are the electro-mechanical key elements for low backlash, easily running and highly dynamic drive systems.
Our high-performance gear models are built to withstand the toughest industrial applications.
The apparatus housings are machined on all sides and invite diverse installation positions and applications, producing them much sought after in the industry. Consequently our geared motors tend to be 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 backed simply by FEM (Finite Element Method). This tooth geometry ensures optimum rolling get in touch with under load.
The special tooth root style in mixture with tooth helix angle, tooth depth, the materials used and surface finish maximizes load capacity. This high gearing capacity allows smaller wheels to be used for the same torque, and smaller sized gears with remarkable power density also increase reliability. Ever-Power geared motors are therefore incredible space savers.
Gearing produced with such micro-geometric precision allows the gearing play necessary for troublefree rolling contact to be substantially decreased and then the gear backlash to be minimized.
Double chamber shaft seals developed by Ever-Power are utilized as standard in parallel shaft, shaft installed and helical worm gears for a high 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 made 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 input shaft and motor flange, and double reduction combination units for slow rate 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 Position Transmission
Long Lifetime
WIDE RANGE Of Ratios
Special Surface Treatments

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