Wear failure refers to the relative sliding friction between the surfaces lead to their working surfaces of metal wear and failure. SKF bearing parts gradually to damage caused by wear, and eventually lead to loss of SKF bearing dimensional accuracy and other related issues. -Wear may affect the shape change, increased clearance and surface morphology changes may affect the lubricants or lubrication caused pollution reaches a certain level functionality completely lost, thus bearing the loss of rotational accuracy and not being-frequently operate.
1, when the bearings run until a certain period of time (or maintenance), the bearings are all taken down;
2, with a clean diesel or kerosene soaked clean bearings, such as technical condition it is best to open the sealed door cleaning;
3, air dry cleaning oil after cleaning, appearance check for injuries;
About 4, with a 150mm, equal to the diameter of SKF bearing diameter stick (preferably as hollow tubes), fixing a bearing at one end;
5, hand fast rotating bearings at the same time, wooden (woodwind) on top in the ear on the other end or audio amplifier microphone defence bearing rotation noise;
6, after the fixed bearing horizontal stirring stick, check for loose bearings for wear;
7 turn the noise is too large, loose, gross, SKF bearings, there are serious defects should be eliminated, to the same model;
8, take a pail of appropriate amount of grease (premium yellow dry oil) simmer to melt (not hot), soak the detection of bearing into the drum to no bubbles overflow.
Remove the bearing grease before cooling, less residue amount of grease. Cool down, remove the SKF lubricating grease bearings, grease residue amount. According to the need to determine how much grease residue.
9, with a soft cloth or toilet paper to wipe out bearings the SKF lubricating grease on bearing an undisturbed assembled into the pulley, maintenance work will come to a close.
Product Model | Inside Diameter | Outside Diameter | Thickness |
639ZZ NSK | 9 | 30 | 10 |
689ZZ1 NSK | 9 | 17 | 4 |