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Lubrication of bearings, grease better lubrication of bearings, grease, the more the better, it is a common misconception. Bearings and bearing Interior too much grease will cause the excessive mixing of oil, resulting in an extremely high temperature. Doesn't matter for separation-bearing clearance and, finally, bearing capacity of work clearance, to be smaller than the original clearance before installation, because the bearings are subjected to a certain amount of load rotation, and INA the elastic deformation of the bearing and load.
How to choose the operation and service life of the grease-lubricated bearings have a very important impact. General principles here to brief you on the choice of grease. Grease made from base oils, thickeners and additives, different types and different brands of same kind of lubricating grease performance vary greatly, allowing rotation limit of different, choices must pay special attention to. Grease performance mainly decided by the base oil. Low viscosity base oil suitable for low temperature, high speed, high viscosity suitable for high-temperature, high-load. Bearing lubrication performance thickening agent, thickening agent for water resistance water resistance of decides to grease. In principle, the different brand of lubricant cannot be mixed, and, even if it is the same the grease thickener, also brings bad influence because of different additives.
On the mounting surface and the installation site requirements? Yes. If bearing scrap iron, burrs, dust and other foreign matter from entering, INA bearings in noise and vibration when operating, or even damage the Raceway and the rolling. Therefore, before installing the bearings, you must make sure that the mounting surface and installation, clean environment.
INA free vibration during rotation of the bearing cage and rolling elements or rings with it makes this noise impact. It may occur in all types of bearings, but whose sound pressure level is not too high and low frequencies. Its characteristics are: a. plastic cages and cages can be produced. B. both the oil and the grease lubrication will occur. C. most likely to occur when the withstand bending moments on the outer ring. D. radial clearance when prone.
Raceway is because of rolling elements in the bearing rotation raceways scroll and inspire in a smooth and continuous noise only when the sound pressure level or tone only when great attention. Sound inspired by the sound of the Raceway is limited, as is normally the case, quality 6,203 raceways-25~27dB. Its characteristics are: a. larger radial internal clearance of the bearing is easy to produce. B. usually appears in grease lubrication, oil lubrication is more rare. C. with increasing bearing size reduced and often appears within a speed range. D. occurs often in the winter. E. it appears to be random and unpredictable, and filling grease amount and associated performance, install on the operating conditions. This noise reduction in radial internal clearance of the bearing and use outer ring raceway of shallow structure to prevent.
But due to the centrifugal force effect are possible contact with the outer ring, and at low speeds, when the centrifugal force is less than the rolling weight, scrolling experience falling and colliding with road or roller cage and stimulate the inherent of bearing vibration and noise and has the following characteristics: a. grease lubrication, oil lubrication is not easy to produce. When using low-quality greases are easier to reach. B. usually occurs in winter. C. for radial loads and the large radial internal clearance is easy to produce.
INA bearing mounting bearings must be cleaned before it is coated with antirust oil, you need to carefully clean with clean gasoline or kerosene, then coated with clean high quality or high temperature lubricant for installation. Effect of cleanliness on the service life of the bearing and vibration noise is very large. But we want to remind you is: cleaning sealed bearings do not require oiling.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 30313U NTN | 65 | 140 | 33 |
| 33213U NTN | 65 | 120 | 41 |