How to judge the quality of hard-toothed gear reducers and soft-toothed gear reducers

To determine the quality of hard-toothed gear reducers and soft-toothed gear reducers, you can start from the following aspects:

• Appearance inspection: The shell of the high-quality reducer is finely crafted, with a flat and smooth surface, and is free of casting defects, scratches or rust. At the same time, the nameplate information of regular products is clear and marked with models, specifications, manufacturers, etc. If the nameplate is vague or defective, you need to be wary of product quality issues.

• Running sound: The quality can be judged by listening to the sound when the reducer is running. The high-quality reducer runs smoothly and has uniform sound without abnormal noise, impact or vibration. You can use a screwdriver to contact the reducer housing at one end and close to the ear to listen to the internal sound more clearly. If there are abnormalities such as harsh friction, it means that there may be quality problems.

• Temperature change: After the reducer with good quality has been running for a period of time, the temperature rises within a reasonable range and there will be no overheating. If the shell is very hot, it indicates poor heat dissipation or internal faults, which may be due to poor quality. When conditions permit, an infrared thermometer can be used to measure the results and compare the results with the normal operating temperature range for accurate judgment.

• Sealing: Check whether there is oil leakage at the shaft seal, end cover, box joints and other parts. The high-quality reducer has good sealing properties and no oil leakage problems. You can wipe the connection with a clean tissue when you are stationary, and check again after running for a period of time. If there is oil stain, it means that the quality of the seal may be poor or the installation is improper.

• Internal structure: If conditions permit, open the shell and observe the interior. The gears of the high-quality reducer have good meshing, smooth tooth surfaces, no wear, pitting, etc. The bearings are firmly installed, flexible rotation, and no excessive gaps or stuck. At the same time, the lubricant should be clear and transparent, without impurities or odor. If the lubricant is turbid, black or has an odor, it means that there may be problems such as wear or overheating inside.

• View technical documents: The technical manual provided by the reducer manufacturer will specify key parameters such as rated power, input/output speed, and reduction ratio. You can check these parameters to determine whether the reducer performance meets the requirements. In addition, you can also check whether the reducer complies with relevant international or national standards, such as ISO certification, and the quality of certified products is more guaranteed.