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What are the selection criteria for choosing a gear reducer?
Before purchasing a gearbox, it is necessary to consider several factors.
A reducer is used to adjust the characteristics—torque and rotational speed—of the mechanism’s input and output shafts. Therefore, it is essential to know both the torque and the rotational speed.
Therefore, it is appropriate to begin by inquiring about torque. A gearbox increases the motor’s torque, enabling the driven component to rotate under the influence of this increased torque. Gearbox manufacturers sometimes specify the minimum and maximum torque—expressed in newton-meters (Nm)—that each model can handle. Torque density varies among different gearboxes; for instance, planetary gearboxes typically offer higher torque density.
Another application of gear reducers is to lower motor speed; we recommend selecting an ideal reduction ratio that suits your specific needs. Based on the motor’s rotational speed, the reduction ratio determines the output speed. Manufacturers typically provide this information on their product pages, expressed in revolutions per minute (RPM).
You should ask yourself which type of gear reducer is suitable for your application. The input and output shafts of a gear reducer can be coaxial, parallel‑shaft, or orthogonal—depending on your intended use.
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About Us
Shenzhen Jier Transmission Equipment Co., Ltd. is a high-tech enterprise that has been focusing on the sales, maintenance, and technical services of reducers for more than ten years. It is the core agent of world-renowned brands such as SEW reducers, NORD reducers, Bauer reducers, and Baumer sensors in Switzerland in Germany
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