7 Key Dimensions for Selecting Planetary Reducers

When selecting planetary reducers, it is essential to precisely match the equipment operating conditions to avoid issues such as overload and insufficient precision due to parameter mismatches. Focus on the following 7 dimensions:

Rated output torque: It should cover the maximum working torque of the equipment and reserve a safety factor of 1.2 to 1.5 times (1.5 to 2 times for shock load conditions). For example, if the equipment's working torque is 100 N・m, a model with a rated torque of ≥120 N・m should be chosen. Please provide the text you would like translated.
Transmission ratio accuracy: It should be selected based on the precision requirements of the equipment. For ordinary conveying equipment, the transmission ratio error is allowed to be ≤1%. For precision machine tools and robots, the error should be ≤0.1%. This can be confirmed by referring to the "transmission ratio error curve" provided by the manufacturer. Please provide the text you would like translated.
Backlash: For precision equipment (such as robots), models with a backlash of ≤ 3 arc minutes should be selected; for ordinary equipment, the range can be relaxed to 5-10 arc minutes. Note that the backlash will increase with usage time, and the "backlash life curve" provided by the manufacturer should be confirmed. Please provide the text you would like translated.
Input speed: Ensure that the rated input speed of the reducer is greater than or equal to the motor speed. Common motor speeds are 1500r/min, so models with a rated input speed of ≥1500r/min should be selected. For high-speed equipment (such as spindles), high-speed models with ≥3000r/min should be chosen. Please provide the text you would like translated.
Installation method: Choose the flange type (common), shaft-mounted type or right-angle type (output shaft perpendicular to the input shaft) according to the space of the equipment. Note that the coaxiality error between the input shaft and the motor shaft during installation should be ≤ 0.1mm; otherwise, it will cause premature damage to the bearings. Please provide the text you would like translated.
The protection grade: IP54 is sufficient for ordinary workshops. IP65 is required for damp and dusty environments, and IP67 is necessary for outdoor or water-related scenarios (such as car washing equipment and outdoor conveyor lines). Please provide the text you would like translated.
Cooling method: At low speed and light load (≤500r/min, ≤50N・m), natural cooling is acceptable. For medium to high speed and heavy load (≥1000r/min, ≥100N・m), forced air cooling (with an added fan) is required. In high-temperature environments (＞60℃), water cooling (with an added cooling jacket) is necessary.