air-compressor-belt-drive ：
When checking the tightness of the belt, the thumb can be pressed with the force of 40N in the middle of the two pulleys, generally 10 to 15 mm below.
When checking the wear of the belt, in addition to checking the wear and aging of the working surface, it is necessary to check the outer plane of the V-belt to be more than 1-2 mm above the edge of the pulley. Otherwise, the belt has reached the wear limit and must be replaced.
When replacing, be sure to select the belts of good quality and the same model to be replaced in groups. Otherwise, it will be damaged due to the uneven force of the belt when transmitting power.
