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Speed Reducers

Speed reducers, a.k.a. gear reducers, are mechanical devices that adjust an input speed and torque to an output speed and torque. Essentially, they modify the speed of a motor's output shaft to a speed suitable for the machine's operations. They work by reducing the rotational speed from the input shaft to the output shaft, thus increasing torque.

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Reducers Parts and Accessories

Reducers Parts and Accessories

Components and supplementary items that enhance the functionality and maintenance of reducer systems.

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Parallel Shaft Speed Reducers

Parallel Shaft Speed Reducers

Utilized to decrease the rotational speed and increase the torque of a power transmission system, utilizing parallel shafts for input and output, enabling efficient and reliable power transmission.

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Right Angle Speed Reducers

Right Angle Speed Reducers

Compact and versatile design that efficiently transmits power, reduces speed and provides precise torque output.

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Inline/Concentric Speed Reducers

Inline/Concentric Speed Reducers

Reduces the rotational speed and increases the torque of a power transmission system while maintaining a coaxial input and output shaft configuration.

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About Speed Reducers

Speed reducers help maintain smooth operations in manufacturing machinery. These devices reduce an input speed or torque to the desired output speed or torque. They have primarily motor-driven applications, which reduce the speed to provide more torque, a function essential in machinery operating at high speeds but requiring a slower, more controlled movement. Ensuring the correct speed and torque provides the needed precision in many operations. However, speed reducers also extend the equipment’s lifespan by reducing strain and wear.


Speed reducers are available in three types:


A right-angle speed reducer alters a motor's output speed and torque like any other. However, this reducer comprises a set of gears arranged so that the output shaft is at a right angle to the input shaft. The input shaft connects to the motor, and upon rotation, the interlocking gears engage, reducing the speed and increasing the torque as the motion transfers to the output shaft. The right-angle configuration is especially beneficial when space is limited since it allows for more compact machine designs.


An inline or concentric speed reducer also operates on the principle of gear reduction using multiple gears in a sealed unit. The input, or high-speed shaft, has a small gear attached, and when power is applied, the small gear rotates, interacting with the teeth of a larger gear attached to the output or low-speed shaft. The inline setup ensures a straight-line power transfer, making it ideal for applications where alignment is crucial.


Parallel shaft speed reducers contain gears arranged parallel to each other. These speed reducers convert high-speed, low-torque input into a low-speed, high-torque output. They are highly efficient, compact, and can handle high radial and axial loads.


MRO's experts in speed reducer replacement parts can recommend and supply any of the numerous parts and accessories in inventory. These include torque arms, shaft kits, backstops, and other kits.


Remember, MRO is committed to providing only high-quality parts from reputable manufacturers.

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