The number of revolutions of the sieve is not enough
Transmission tape is too loose
Tightening drive tape
Bearing heating
(1)Bearing lack of oil
Oiling
(2)Bearing fouling
Wash the bearing, replace the seal ring, check the seal
(3)Too much oil in the bearing or the quality of the oil does not meet the requirements
Check the oil filling condition
The vibration of the sieve is weak
The weight on the flywheel is not loaded correctly or is too light
Adjust the weight on the flywheel