During the installation and use of parallel shaft helical gear reducers, the following four points should be noted:
1. During the installation of the reducer, it is essential to ensure precise alignment of the transmission centerline axis, with an error not exceeding the compensation amount of the coupling used. Good alignment can extend the service life of the reducer and achieve ideal transmission efficiency.
2. When assembling transmission parts on the output shaft, it is strictly forbidden to strike with a hammer. Usually, assembly fixtures and the internal threads at the end of the shaft should be used, and bolts should be employed to press the transmission parts in, otherwise, it may cause damage to the internal parts of the reducer. Try to avoid using rigid fixed couplings, as improper installation of such couplings can cause unnecessary external loads, leading to premature bearing damage, and in severe cases, even breakage of the output shaft.
3. The reducer must be stably mounted on a solid and level base or foundation, and the oil in the oil discharge groove should be able to drain smoothly, while the circulation of cooling air should be unobstructed. If the foundation is unreliable, vibration and noise will occur during operation, and it will also cause damage to bearings and gears. When there are protrusions on the transmission connecting parts or when using gears or sprockets for transmission, protective devices should be considered. When the output shaft is subjected to a large radial load, reinforced products should be selected.
4. According to the specified installation device, it should be ensured that workers can easily access the oil level gauge, breather plug, and oil drain plug. After the installation is completed, the accuracy of the installation position should be thoroughly checked in sequence, as well as the reliability of the tightening of each fastener. After the installation is complete, the reducer should be able to rotate flexibly. The reducer uses splash lubrication from an oil bath, and before operation, the user needs to remove the plug from the breather hole and replace it with a breather plug. Depending on the installation location, open the oil level plug screw to check the height of the oil level line, add lubricating oil from the oil level plug until it overflows from the oil level plug hole, and then tighten the oil level plug. After confirming that there are no errors, a no-load test run can be carried out, with the test run lasting no less than 2 hours. The operation should be smooth, without impact, vibration, noise, or oil leakage. If any abnormalities are found, they should be promptly eliminated.
After a certain period of use, the oil level should be checked again to prevent possible leaks from the casing. If the ambient temperature is too high or too low, the grade of the lubricating oil can be changed.