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).
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.
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.
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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Planetary servo-gear reducer 6 000 rpm, 500 mNm | 15/10 Serie FAULHABER
FAULHABER introduces the new cutting edge 15/10 planetary gearhead series which is the only standard high torque precision gearhead in a 15 mm diameter on the market today. FAULHABER has expanded its product portfolio of precision gearheads expands with a 15mm diameter planetary gearhead that delivers high torque performance from a robust stainless steel design. The use of hardened materials and...
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Right angle drive servo-planetary gear reducer max. 4 500 Nm, 6 000 rpm | SK+, SPK+ WITTENSTEIN AG
New right-angle precision as classic shaft version. The successor to our versatile hypoid gearhead...
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maxon GPX gearheads feature high transmission of power with a very short...
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Planetary gear reducer max. 2 600 000 Nm | FLENDER Siemens Industry
Description With the FLENDER planetary gear unit series, Siemens provides also standardized gear unit solutions for higher power rating ranges in the...
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Precision planetary gear reducer ø 32 mm MOOG
Moog precision gearheads, when coupled to our line of brush-type and brushless motors, provide the user with a quiet and powerful precision gearmotor. Available in a wide range of ratios and output torques, these gearmotors will meet the requirements of a vast number of applications. Life-time lubrication...
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Planetary winch gear reducer 5 000 - 42 000 Nm, 21:1 - 108:1 | 800 Series Bonfiglioli
The units of the 800 series are specifically designed for winch applications, and can be easily accommodated within the drum itself. Available in various gear ratios,...
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Right angle bevel gear reducer 48 - 670 Nm, 0.12 - 9.20 kW NORD
Based on the proven UNICASE design Getriebebau NORD has developed the compact geared motor NORDBLOC. Features: - corrosion resistant stainless steel lead screw with brass...
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Right angle spiral bevel gear reducer 11639 Nm, i = 1936 Lenze SE
Standalone helical-bevel gearbox For exceptional performance and precision in even the most extreme conditions Helical-bevel gearbox with shaft or for IEC mounting. Torque...
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Bevel gear reducer Tsubakimoto Chain
Tsubaki Emerson's gear box provides a full lineup ranging from small models to large models. The spiral bevel gear delivers high transmission capacity and...
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Bevel gear reducer max. 678 Nm | RAB Rotork plc
The Radial Acceptance Bevel is suitable for AWWA and where side load movement is likely to happen on penstocks or gate valves. Torque...
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Custom gear reducer TIMKEN Europe
Timken produces a range of transmissions to meet the various performance requirements for both military and commercial helicopters. We have the capability to manufacture, assemble and test new gearboxes as well as overhaul and repair transmissions already in service. We can meet any customer's requirement from a single...
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Custom gear reducer Framo Morat
Our customers also value us as an experienced partner in innovative drive solutions. A separate development team for customized drives supervises every project from specification to volume production and ensures that...
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Gear reducer for valve actuator max. 16000 Nm | GST series AUMA
AUMA spur gearboxes are used for the operation of valves (e.g. gate valves, globe valves). Type of duty: Short-time duty S2 - 15 min (Open-close duty) Intermittent duty...
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Cylindrical gear reducer 100 cNm | UGM Johnson Electric
UGM Type - Motors Product type - Saia Gearbox for motors Typical markets - heating ventilation & air conditioning - industrial equipment & automation - distribution Typical...
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Planetary gear reducer 0.1 Nm, ø 10 mm Portescap
Highlights - Planetary Gearhead - Rated Torque 0.1 Nm - Reduction Ratio...
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Planetary gear reducer for wheel and track drive max. 185 hp | P65T series JOHN DEERE POWER SYSTEMS
Available for reducer, swing, and track applications, this reducer planetary...
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Right angle gear reducer for asynchronous motor 100 - 700 N Orientalmotor
Standard type Gear ratios: 1:3 - 1:200 Max. permissible torque: up to 40Nm Right-angle...
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Right angle helical gear reducer max. 8300 kW, 117 000 Nm | H series BENZLERS
Series H gear units are available in in-line and right angle versions in single, double, triple and quadruple reduction gear stages. The modular design and construction of the Series H offers many engineering and performance benefits including a high degree of interchangeability of parts and sub assemblies. This in turn provides considerable economies of...
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Low backlash planetary gear reducer max. 1 000 Nm, i= 3:1 - 100:1 | MPG series VOGEL
Technical specifications on this page and in the tables on the following three pages are intended only for rough preselection. Gear...
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The all new Cyclo® Bevel Buddybox 5 Series (Cyclo® BBB5) is a highly efficient, state of the art, compact series of speed reducers and gearmotors. Optimized for shaft mounted applications and easy maintenance, the Cyclo® BBB5s exterior dimensions have been minimized without compromising the ability to transmit torque. The all-steel internal construction,...
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Planetary gear reducer for harsh environment max. 876 Nm | AquaTRUE™ Thomson
Thomson Micron introduces our new AquaTRUE™ gearhead design to meet the strict requirements of harsh environmental applications; such as, food and beverage handling,...
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Planetary gear reducer for DC motor 5 - 320 Nm, IP64 | AG2210 series BECKHOFF
The gear units from the AG2210 series replace the gearboxes from the well-known AG2200 series as a compatible successor series for the same price. The low-backlash and high-performance successors offer up to 75 %...
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- 3 sizes - 2 output variants (output flange, output shaft) - Gear ratios 4 to 10 (single-stage) - Max drive speed (min-1) up to 6,000 - Rated torque up to 330 Nm - Acceleration torque up to 550 Nm - Circumferential backlash < 6 arc min (optional < 3, < 1) The PPG precision planetary...
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Planetary servo-gear reducer max. 1 280 Nm | GTE Bosch Rexroth - Electric Drives and Controls
Servo-Gearboxes GTE - for standard applications Economical and compact Ideal for standard applications Low backlash Open choice of mounting positions Silent operation Lifetime...
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Right angle spiral bevel gear reducer i= 130:1, max. 117 000 Nm | H series Radicon
Series H InLine industrial gearboxes are available in in-line and right angle versions in single, double, triple and quadruple reduction gear stages. The modular design and construction of the Series H offers many engineering and performance benefits including a high degree of interchange ability of parts and...
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Spiral bevel industrial gear reducer max. 475 kNm | X series SEW-EURODRIVE
Robust and universal gear unit series which can be optimally adjusted to the task due to finely stepped torque ratings. The universal modular system concept sets new standards with respect to availability...
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Servo-gear reducer PS series Parker Electromechanical Division
Stealth Advanced PS is Parkers highest performance servo gearhead. With 8 frame sizes and 12 gear ratios, you are guaranteed to find a Stealth Advanced PS to fit your high performance...
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Timken's integrated flexpin bearing features pins pressed into only one wall of the gearset carrier. At the free end of the pin, an annular sleeve and bearing assembly support the gear. Under load, opposing bending forces in the sleeve and pin offset one another, resulting in zero misalignment across a broad range of torque. This enables much simpler gear design while providing significant...
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Planetary gear reducer 9 - 1 300 Nm | HYDROTRAC GFT Bosch Rexroth - Mobile Hydraulics
Travel Drives HYDROTRAC GFT For travel drives in tracked and wheeled vehicles Also suitable for other applications, e.g. rotary motion sequences, drum drives,...
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Planetary gear reducer for stepper motors 28 - 90 mm | PS/PL series ORIENTAL MOTOR
The Planetary PS/PL Geared type stepping motor provides high speed (low gear ratios) and...
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Gear reducer for pump max. 735 Nm, max. 4 898 rpm | AM 110 series Twin Disc
Twin Disc now offers a new line of pump drives to meet a broad range of hydraulic system set-ups and application needs. These drives are available in a wide variety of gear ratios, including both speed increasing and reducing configurations. The modular design of these pump drives enables you to choose from several input options, including a rubber block drive,...
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Helical gear reducer 20 - 150 in-lbs | Multi-Tech™ 185 series BISON
Add your own stepper or servomotor to our NEMA gearboxes. Highly Efficient - helical-spur geartrains transmit 96% of the available power per stage, leading...
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Planetary gear reducer Parker Electromechanical Automation
The PV Series Planetary Gearbox combines Power and Versatility with its wide combination of competitive output faces, high...
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Gear reducer for integration i= 50:1 - 160:1, max. 137 Nm | CPL series Harmonic Drive AG
The component sets CPL are based on the proven HFUC components. In comparison to the HFUC parts, which already exhibit a very good weight to torque ratio, the component sets CPL have been...
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Right angle drive crown gear reducer EtaCrown®Plus Zeitlauf GmbH antriebstechnik & Co. KG
The new EtaCrown®Plus is an extremely compact and powerful drive unit. On account of its high performance density, it can be described as the...
