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INA bearings grinding, grinding wheel and the workpiece contact zone, can consume a large amount of, produce a lot of grinding heat, causing local instantaneous temperature of the grinding area. Using the theory of linear motion-heat-source heat transfer formula, calculation or the application of IR method under experimental conditions and method of thermocouple measuring instantaneous temperature, instantaneous temperature can be found in 0.1~0.001ms in the grinding zone can be as high as 1000~1500℃. Instantaneous temperature, sufficient to enable the work surface depth of high temperature oxide layer on the surface, non-crystalline, high-temperature tempering, quenching for the second time, or even burn crack and other changes.
How to ensure the bearing properly if you are in the application process, how to get longer bearing life INA bearings without injury. I give below for you to assure the bearings pay attention to matters of reliable work, I hope to help you. Compressive strength refers to accomodate the load not being bad or not the ability to change size.
Under normal circumstances, ensure that bearings are reliable, pay attention to the following several points:
1, clearance of the bearing fit, have an impact too large, too small, poor lubrication may be burnt.
2, improve the quality of lubrication and control oil pressure, temperature and flow, strengthening the oil filter.
3, bearing and axle geometry and surface quality should be strictly guaranteed.
4, subject to the limits of fuel and lubricants.
5, control of engine temperature, overheating of cold case work is unfavourable. Cold, engine starting and warm-up before, scroll with the hand crank that oil into the friction surface.
INA bearing cleanliness of considerable influence on bearing life, bearing special tests have been performed by the company for this purpose, with the result that their differences for a few times and even dozens of times to more than double. Bearing cleaning more, longer life and other people's experiments show that different cleanliness of the lubricant to the ball bearing life considerably. Therefore, improve the cleanliness of the lubricant can extend the life of the bearing, in addition, lubricant with dirt particles control 10um, bearing life into several times growth.
Effect on lubrication performance for bearing cleanliness declined, not only affect the lubricant film formation, also cause spoilage and accelerate their ageing of grease, thus affecting the grease lubrication performance.
INA bearing of serious damaged often not single of causes caused of, but in several aspects integrated role Xia, in bad of run conditions Xia produced cycle, led to bearing of serious burn loss, therefore in accident occurred Hou, often hard judgment is by what causes due to, also on to we developed related of measures brings must of difficulties, for discussion convenient, first from several aspects for analysis bearing occurred fault of causes.
When bearings are used after a period of time, bearing inner ring, rolling elements and cage, outer ring, roller etc have some flaws, scars, cause poor lubrication of bearings, bearing caused by fever, prolonged fever, resulting in:
1, axle bearing lubricant dilution.
2, accelerate material fatigue, decline in hardness. For these reasons, vicious circle and further accelerate overheating and burning of the INA bearing. Significant displacement of the inner ring of the bearing and rolling Out-of-round, impact heat eventually melt together. Online runtime if bearing severe heat, smoke, not to stop, should be maintained and run to the front, because the overheated bearing at the moment is in the melt State, once stopping after cooling will never be able to walk to plug the line.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 4T-3382/3321 NTN | 39.688 | 77.534 | 30.391 |
| 4T-2789/2720 NTN | 39.688 | 76.2 | 25.654 |