Inspection and cleaning of port bearings

In order to judge whether the removed imported bearings can be reused, check the bearings after cleaning. Carefully check the raceway surface, the rolling surface, the state of the mating surface, the wear of the cage, the increase in the clearance of the imported bearing, and the presence or absence of damage to the dimensional accuracy. For non-separable miniature ball bearings, use one hand to support the inner ring horizontally and rotate the outer ring to check if it is smooth.

Separate bearings such as tapered roller bearings can be inspected separately for the rolling surfaces of the rolling elements and the outer ring.

Large bearings cannot be rotated by hand. Pay attention to the appearance of rolling elements, raceways, cages, and ribs. The higher the importance of bearings, the more careful inspection is required.

The judgment of whether it can be reused is determined by considering the degree of damage of the imported bearings, mechanical properties, importance, operating conditions, and the period until the next inspection. However, if you have the following defects, you can no longer use them. New bearings must be replaced.

There is a crack, or a gap, in any of the inner ring, the outer ring, the rolling element, and the cage.

There is a break in any of the ferrule and the rolling element.

There is significant slack in the raceway, ribs and rolling elements.

There are rust and damage on the raceway surface and the rolling elements.

There are severe indentations and marks on the raceway surface and rolling elements.

There is significant creep in the inner diameter surface of the inner ring or the outer diameter surface of the outer ring.

The discoloration caused by heat is obvious.

Bearings sealed with grease, seals, or dust caps are clearly damaged.

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Guangyang bearing normal maintenance to avoid failure two ways

The first thing to emphasize is that it is important to keep the bearings lubricated and clean. Therefore, before we inspect the Guangyang bearing, we should clean the surface of the bearing and then remove the parts around the bearing. It should be noted that the oil seal is a very fragile part. This requires extra care during inspection and disassembly. Do not apply excessive force to avoid damage to the parts. Then carefully check the bearing's oil seal and its surrounding parts. If it has been shown to be a bad symptom, be sure to replace it. A bad oil seal will cause damage, causing the bearing cloud to be abnormal and causing the machine to stop.

Secondly, we also check the lubricant of Guangyang Bearing. Lubrication is very important, not only for bearings, but also for all bearings. However, please note that it is not advisable to add too much grease to the bearings. The inspection method for the bearing lubricant is: rubbing a little lubricant between the two fingers, if there is a contaminant, it can be felt; or apply a thin layer of lubricant on the back of the hand, and then seal the light. Then it is to replace the lubricant of the bearing. Bearings lubricated with oil should be refilled with fresh oil and allowed to rotate at low speed for a few minutes if the old oil is drained. As much as possible, allow the oil to collect the contaminants from the wreckage and then vent the oil. Note: It is best to filter the oil before use. For bearings that use grease-lubricated bearings, the replacement of the grease should be avoided with a cotton joint to any part of the bearing. Since these residual fibers may be wedged between the rolling elements and cause damage, especially the application of small bearings requires attention to this problem.

Finally, it is important to note that the exposed bearings are covered. When inspecting bearings, never expose the bearings to contaminants or moisture. If the work is interrupted, the machine should be covered with a piece of oil-paper plastic or similar material. If the unshielded bearing is cleaned without the possibility of disassembly, the brush for application should be cleaned with a petroleum solvent (whitespirit), then dried with a lint-free cloth or blown dry with compressed air ( Be careful not to let the bearing assembly start to rotate). Check the track faces, retainers and beads of the bearing with a small mirror and a probe similar to that used by dentists. Do not clean the bearing with a sealing cover or dustproof; just wipe the outer surface. If the bearing is damaged, it needs to be replaced. Replacing bearings during regular downtime maintenance is far more economical than the loss of sudden downtime due to damage to the array.

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