It is caused by the surface of the white silicone rubber ball being too hard from use. Resulting in uneven storage of rolls. When cutting, there will be uneven swelling and swelling of the work roll. There is a chance of loosening and sliding of the work roll.
This is due to the excessive hardening of the contact surface of the white silicone rubber ball due to use. This can affect the uneven storage of the roller. During cutting, the expansion of the work roll is uneven, and the work roll may become loose and slip.
Because the contact surface of the white silicone rubber ball is too large and the wear is too large, the rolling is uneven. When cutting, the roadway will have uneven rolling, and rolling loosening and sliding may occur.