|(2) Attention should be paid to the rollers in operating.
Check whether they are moving or not.
If the conveyor is operated with the rollers not running, the motor will be overloaded and belt will be damaged or misaligned.
And the roller face will be worn unequally so that the balance will be lost.
Even if the bearings are recovered to the normal condition and rotates again, they are liable to stop rotating or not to rotate smoothly as before due to the following troubles occurred in the bearing.
In these case, the roller must be replaced at once.
1)The fatigue of bearing makes the sliding surface peeled off and an abnormal noise built in.
Furthermore, the ball is cracked or burnt due to the excessive friction.
2)If dust or water slits into the bearing, it will be worn or corroded.
(3) Care should be taken of the following items in carrying out maintenance and inspection.
1)Replace the roller if it makes a noise.
2)Replace the roller if its face is abnormally worn.
3)If the clearance between the roller and stand or bracket is smaller than the required dimension, check and repair it.
4)Remove the materials accumulated on the stand or bracket.
5)Remove the dust from the roller.