What are the warning signs of bolt loosening for the GRX77-1.5KW-4P-5.63 hard-toothed gear reducer?

The loosening of bolts in GRX77-1.5KW-4P-5.63 hard tooth gear reducer may have the following signs:

Abnormal noise: Loose bolts can cause loose connections between internal components of the gearbox, resulting in abnormal noises such as clicking or metal collision during operation.

Increased vibration: Loose bolts can cause significant vibration or shaking of components, leading to an increase in the overall vibration amplitude and frequency of the gearbox.

Component displacement: Loose bolts at the connection point may cause displacement of the connected components, such as gaps or changes in position at the junction surface and end caps of the box.

Appearance changes: Scratches and wear can be observed on the bolt head or nut surface, changes in the relative position between the nut and washer, and excessive compression or deformation of the washer. Long term looseness may also cause cracks or fractures in the material of the connecting parts.

Abnormal temperature: Due to loose component connections, friction increases during operation, which may cause local temperature rise in the gearbox and result in abnormal temperature.

Unstable transmission: Loose bolts affect the stability of the gearbox, which may make the transmission unstable, such as fluctuations in output speed, unstable transmission torque, etc.