A speed reducer, also known as a gearbox, is a mechanical device attached to a power source such as an electric motor. Typically, they have two central functions: to multiply torques created by the power source and reduce the input speed to achieve a correct output speed. The following will elaborate on how speed reducers function and which type is right for you.

How Do They Work?

Speed reducers contain at least two sets of gears, shafts, seals, and support bearings along with gear and bearing lubricants. In order to reduce the speed while increasing torque in an electric motor, a speed reducer’s output gear has to have more teeth than the input gear. As a result, the output gear moves more slowly, thus reducing the speed whilst simultaneously increasing toque.

In order to choose a speed reducer, you’ll need to consider its application, space limitations, efficiency requirements, and your budget. These devices are used in a range of industries and come in different sizes to suit your needs. 

What Are the Different Types of Speed Reducers?

Speed reducers typically come in two configurations: in-line and right angle. Each uses a different type of gearing. In-line models typically consist of the spur, helical, or planetary gears. Right angle models typically consist of worm or bevel gears. 

A worm speed reducer is often used for applications requiring low to moderate horsepower. They’re small and affordable while still providing high output torque. Additionally, they have a high tolerance for shock loading. A bevel speed reducer is more efficient than a worm speed reducer; it also has a low ratio.

Alternatively, a helical speed reducer is ideal for high overhung loads and high horsepower applications. This type of reducer is ideal for those prioritizing long-term efficiency over initial cost. Planetary gear reducers provide a combination of power efficiency and compactness.

If you’re looking to purchase a speed reducer or have yours repaired, head to Electric Motor Center Inc in Russellville, AR. With over 40 years of experience, their team has all of your electric motor needs covered. In addition to selling quality brands, they offer repair and rewinding for products such as speed reducers, rotary lobe blowers, and drum motors. For reliable and affordable electric motor services, call (479) 968-2532. Browse their gear products online.