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Anti-friction bearings all bearings are basically consist of two hardened steel rings, more hardened ball or roller and a separation roller or separation roller rack or cage. The types in use are divided into many categories. Some types, such as needle-shaped bearings, may not have the ring, roller sports directly on the hardened shaft.
FAG bearings lubricating grease composition profiles in the opening were divided, must constitute a draft outline, should time to go short, in fact moving in the bearing temperature is low and stable, this is a fantasy of grease, so the grease into drains special primary.
Bearing temperature, generally according to the external temperature of the housing speculation. But the temperature measurement of bearing outer ring with holes directly is more accurate. Bearing temperature, work gradually began to rise, usually temperature-stable after 1-2 hours. If adverse bearing installation, temperature rises dramatically, unusual high temperatures. Its causes, such as excessive grease, the bearing clearance is too small, poor installation, excessive seal friction. High speed rotation, bearings, lubrication and a cause, such as selecting the wrong way.
Turning bearing sounds with a stethoscope to check, with strong metal noises, different sound irregular sound note exceptions. Due to poor lubrication, shaft or housing poor accuracy, bearing damage, intrusion of foreign bodies, etc.
In the popular position, the filling amount of grease in the bearings always goes beyond the practice of intervening directly in the lubrication of the demand which fill cavity on the frame and bearing cover, and on the edge of rolling elements constitute a profile. In the process, because of excess grease resistance, bearing temperature rise quickly. Although most of the excess grease in the early running was out, and squeezing roller attachment for grease may still be migrated between roll shift rolling into the road.
The early stages of running these bearings, most of the grease quickly (in less than a minute) crowding the Raceway, and accumulate in the grease in the bearing migration into reincarnation, being little is excreted. Bearing Timor continues to rise, up until excess grease is discharged, may be called a grease collection phase, based on the quality of lubricating grease in the bearing structure, padding and other factors, which may last a dozen minutes when, as well as a few hours.
When the notation for anti friction bearings Grease, you might not need to use high pressure on the unless used very carefully. High voltage can damage bearings, waste grease, high temperature caused by excess grease cause a hazard and cause unseen environment around the bearing. In most applications, ball or roller bearings can fully lubricated if one-third to half of horizontal bearing capacity of lubricating grease. Excess weight will usually be sealed shell discharged waste.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| NNU4934 NTN | 170 | 230 | 60 |
| NNU4932K NTN | 160 | 220 | 60 |