What precautions should be taken when disassembling the bearings in the toilet paper machine?
The bearings in the toilet paper machine might have a small connection point with the human body, but they play a significant role. If repaired or replaced incorrectly, they can severely impact the machine’s production rate. Let’s look at the considerations when disassembling the bearings in paper machinery.
- When using a puller, its hooks should latch onto the inner ring of the bearing, not the outer ring, to avoid excessive loosening or damaging the bearing.
- While using the puller, ensure the screw aligns with the shaft hole without any tilt.
- Also, be cautious of the stress between the hook and the bearing; avoid damaging both the hook and the bearing, and ensure the hook does not slip off.
- The angle of the bent legs should be less than 90°.
- Toilet paper machine manufacturers use a push-pull method for bearings to ensure smooth and reliable operation without causing damage to the machine or the bearing. This push-pull can be manual, mechanical, or hydraulic. Note: The pressure point of the press should be centered on the shaft without any eccentricity.
- The hot removal method is used for tightly fitted bearings. First, pour oil heated to around 100℃ over the bearing to be disassembled. After the bearing ring heats and expands, you can use the puller to remove the bearing. The puller should be mounted on the bearing intended for removal, with adequate pulling force.
- Before heating, the shaft should be wrapped with asbestos rope or a thin iron plate to prevent the shaft from heat expansion. Otherwise, removal can become challenging. Only by heating the bearing housing hole can the bearing housing be heated. When pouring oil, pour it steadily over the bearing ring or rolling element on the paper machinery. When disassembling, ensure you collect the draining hot oil to avoid wastage and burns. Operators should wear asbestos gloves to prevent burns.
In the paper industry, raw materials include plant fibers and non-plant fibers (inorganic fibers, synthetic fibers, metal fibers). Currently, plant fibers dominate, with coniferous and broad-leaved timber accounting for over 95% of the paper industry’s raw material usage.