How should SEW motors be inspected and maintained?

Whether in industrial or everyday applications, regular inspection and maintenance of mechanical equipment can help reduce accidents and extend its service life. So, how should SEW gear reducers be inspected and maintained?

After the SEW motor has been running for 200–300 hours, the oil should be changed for the first time. During operation, the oil’s condition should be checked regularly to prevent contamination. If a gearbox has been idle for an extended period, it should be refilled with fresh oil before use, ensuring that the new oil is of the same grade as the original. Oil from different brands must not be mixed; this is crucial to remember. However, oils of the same grade may be blended, provided their viscosities are compatible.

When changing the oil, the gearbox must be allowed to cool down—this means the procedure should only be carried out under safe conditions. This helps reduce the risk of accidents. When the SEW motor is shut down, it should remain warm; if it is allowed to cool completely, the oil’s viscosity will increase, making draining much more difficult.

When performing oil changes on a SEW motor, be sure to disconnect the power supply to the drive system. This will prevent hazards caused by accidental energization. If, during operation, the oil temperature exceeds 80°C or even 100°C, immediately stop using the motor. At that point, identify and rectify the underlying cause, replace the lubricant, and only resume operation once the issue has been resolved—this measure is essential to ensure the machine’s safety. Users must therefore adhere strictly to the manufacturer’s guidelines when operating SEW motors, which will help minimize accidents and malfunctions. Additionally, it is crucial to select a lubricant with an appropriate viscosity for the specific application.