Gear reducers

211 companies | 1353 products
Gear reducers
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The Bonfiglioli C - Helical Gear series is a range of motors that provide efficient...

The F Series features a mounted gear motor built in a rugged, easy-to-install...

The S series of single-reduction helical gear motors feature a simple design with...

Bonfigliolis 3/H gearboxes combine the high technology, performance and efficiency of planetary gearboxes with the robustness, quality and reliability of bevel helical gearboxes. These planetary/bevel helical combination gear boxes deliver the high transmissible torque of Bonfiglioli...

Bonfigliolis 600 planetary drives incorporate an integrated, maintenance-free electric motor and offer significant benefits in terms of compact dimensions,...

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Our Core Competency is the passion for manufacturing large precision gears for any industrial application.
Brevini Gear Systems facility is...

Complete range of modular design planetary gearboxes for industrial applications. It combines high performance with low cost and compact size,...

This wide range of Brevini planetary gear units is specifically designed for pinion and slewing ring drives. Successfully employed on tower cranes, shipboard and harbor cranes, wind generators and as...

This integrated line of helical and bevel helical gearboxes is made in Germany by the Brevini manufacturing unit PIV Drives. These gear units are produced with state of the art design, material, and manufacturing technologies for maximum power and reliability...

Heavy lifting gearboxes, in which the cable drum and driving motor are arranged in parallel, require a step-down gear with a correspondingly large axle base. The lifting...

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Both parallel shaft and standard right-angle types are available for this high-powered, compact product. It features a modular housing, which can be used...

The SMR helical reducer provides customers with great space, energy, and time-saving...

Tsubaki worm gear reducers provide several options, ranging from small to large sizes, suitable for a variety of applications.

The...

Coming in sizes from small to large, the highly-efficient Tsubaki's gear box also provides an elevated transmission capacity. Years...

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Oriental Motors' GN/GE Series of parallel shaft gears are primarily standard gearheads...

The RH/RA Series has standard-type 1:3-1:200 gear ratios with maximum permissible torque of...

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Manufactured by Nexen, the harmonic gearheads feature a true zero backlash, high reduction ratios of 50/80/100/120:1, and a high...

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Poulibloc are helical geared motors that feature parallel output and are suitable for normal environments. They...

These hollow shaft geared motors with taper bush are designed to operate in potentially...

The Poulibloc ATEX zone 22 is designed specifically for use in environments with...

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The Flender gear units from Siemens are industrial gear units that are capable of meeting all requirements. They entail lower product lifecycle costs and are especially...

The Bevel Helical Gear Unit is an optimized solutions for the task in the future. This...

The Siemens FLENDER planetary gear unit series offers a range of standardized gear unit solutions that offer higher power...

The FLENDER SIP® planetary gear unit offers a wide variety of high-endurance and reliable gear unit quick fixes in fine accruals with great variety...

Siemens' FLENDER Gear Units for aerators are highly customized to provide great support for the machines, which are primarily impellers stationed at the biological section of any sewage...

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Funk pump drives are highly flexible, and it is quite easy to fit your equipments into their drives, leaving you with no room for doubt at all. With their modular design, the company is able to deliver...

The Funk planetary drives offer durability, high-quality performance and high-ranking engineering. It has seven models and three types wherein each designs...

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These gearboxes with a wide scope of torque ratings, cover a vast array of mechanical applications. With a 600 cNm threshold, they enable...

Johnson Electric gearboxes are a combination of Saia and Johnson Motor products. The devices are torque rated at 600 cNm.

The range of...

Johnson Electric's UGM series gearboxes combine with Saia motor brand products. Torque ratings up to 100cNm are available in various packages and gear ratios ranging from...

The gearboxes developed by JOHNSON ELECTRIC are designed to be used in conjunction with Saia and Johnson Motor...

The Johnson Electric's range of gearboxes can be combined with the Saia and Johnson Motor products. The Torque rating goes to 600 cNm are currently available in the growing...

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A wide range of transmissions have been introduced by Timken to match the requirements of military and commercial helicopters. Timken also participates in the manufacturing, assembling and testing of new gearboxes along with overhaul and repair transmissions in service.

It...

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Wittenstein's Alpheno® is a planetary gearhead unit designed and manufactured to be the...

New Rp+ is a high-performance planetary gearhead that sets standards with respect to power thickness,...

The iconic all-rounder planetary gearheads from Wittenstein is perfect for high positioning precision and dynamic...

The TP+/TP+ HIGH TORQUE is a sleek gearhead that was manufactured by Wittenstein. The...

Wittenstein proves that innovation raises the limits with the LP+/LPB+ Generation 3 low-backlash planetary...

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Gear series IB/AS combination operators from Rotork are multi-turn gearboxes employed in manual or motorized systems that...

The Rotork MTW Multi Turn Worm gearbox is used for a number of applications such as dampers and sluice gates. Its torque...

The 242 range is robust and durable. By utilizing the latest lean engineering principles and analytical design tools, it minimises...

The new hard-wearing and economic FB series of gearboxes can withstand more than three times its rated...

Another great design and product by Rotork is the IW Worm Gearbox Range or IW-Quarter-Turn Worm. It is a quadrant wormgear valve operator which is available in manual and motorized configurations....

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In accordance to the well-tested unicase housing principle, the NORD industrial gear units have been improved in which the unicase is carried out from a unique jig and the...

The right-angle worm gear reducer integrates all bearing seats into a single-piece casting. It eliminates all sealing...

With its compact built features, the Universal SI and MI worm gear by NORD DRIVESYSTEMS offers a high power density and the transferral of torque silently....

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The RG Series manufactured by Varvel is a low-backlash planetary reducer that was specifically developed for two and three stages. They have hardened and tempered steel casing and broached internal...

Varvel presents the RP90 series one-stage helical gearboxes. These are primarily used...

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A solution to the tough demands of hostile setting applications is Thomson Micron's new offering - AquaTRUE™ Gearhead. It is designed with...

The XTRUE™ Series is a recently released precision gearhead, which is a compliment to the Micron®...

True Planetary® gearhead was strongly built with a stainless steel enclosure best suitable for harsh ambient operations. It is economically priced with 30% less...

UltraTRUE™ is a true planetary gearhead that blends the positive elements of Helical Crowned gearing with True Planetary orientation to produce smooth...

The EverTrue True Planetary® from THOMSON is a gear head that is highly durable...

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Delivering quality and reliable products, Bison Gear and Engineering Corporation designed the 250...

The 811 model of reducers by Bison is constructed with high quality cast aluminum housing,...

Multi-tech Reducers 185 is a highly efficient NEMA gearbox and Gear trains that transmits 96% of the available power per stage. The...

Adaptability is how the Multi-Tech Reducer 385 as any stepper of servomotor can be connected to the NEMA gearboxes. They are top...

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AUMA worm gearboxes are used for the operation of part-turn valve butterfly valves and ball valves.

Designed for intermittent...

This range GHE is suited for part-turn butterfly valves and ball valves that are...

These linear gearboxes by AUMA, as the name suggests, executes linear movements,...

AUMA spur gearboxes finds wide application in the operation of valves (e.g. gate valves, globe valves). The unit offers short-time duty S2 of 15 min (Open-close duty) and intermittent duty S4...

The AUMA bevel gearboxes of series GK are robust units with corrosion protection and can deliver high torques up to 16,000Nm. These are employed for the operation of various kinds...

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The Limtorque WG Worm Gearbox from Flowserve can be reliably used in a wide range of submersible and...

The MT series is a superior combination of a bevel gear operator torque housing with a new thrust...

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The QTR Series Transmissions range features an innovative, dual-clutch transmission technology that eliminates the use of a torque converter, and utilizes a Cummins Synchro Shift to enable...

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The AG 2210 are BECKHOFF'S planetary gear units for servomotors that equip industrial machinery with minimum backlash, high performance, and cost-effective equipment for industrial...

The AG1000+-PMaa.i from BECKHOFF are planetary gear components that boosts the torque and...

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How to choose this product

gear-reducer

A gear reducer is a gearing assembly that can reduce rotational speed while increasing torque in a mechanical system, or increase speed while reducing torque (in which case it is called a multiplier).

Applications

These devices are extremely common in a wide range of mechanical transmission applications, including automobile and motorcycle transmissions, in machine tools, variable speed drives and gear motors.

Technologies

There are four basic types of gear reducer:
- Straight (or straight sprocket, with straight-cut or cylindrical teeth)
- Worm gear (worm and wheel), with straight or helical teeth
- Bevel gear, with straight or helical teeth
- Planetary (epicyclic) gear

The term helical refers to tooth profile. Helical teeth can be found on any gear type. Note that in a rotating mechanism, speed and torque are inversely proportional.

How to choose

Choice of gear reducer will depend on the speed and torque of both the input and output shafts. These data can be used to calculate the reduction ratio. Another factor is the relative orientation of the input and output shafts: coaxial, parallel, perpendicular, convergent or not.

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