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introduction：Radial ball bearings in normal technical condition，therein、The outer ring raceway should be free of peeling and serious wear marks，And in the shape of a bright circular groove；All ball bearings should remain round，spotless、Cracks and flaking；The cage is not loose、crusheproof、unworn。
2017-06-13 Reading quantity 303
introduction：NTNBearing service life and3One factor matters，One isNTNThe quality of the bearing itself。The second is the use environment。The third is the installation method。
2017-06-13 Reading quantity 307
introduction：Drip lubrication is suitable for bearing parts that require a quantitative supply of lubricating oil，The amount of oil drops is individual 3-8One drop per second is appropriate，Too much oil will cause the bearing temperature to increase。
2017-06-13 Reading quantity 225
introduction：NTNImport bearing a rotation、Raceway surface of inner ring and outer ring，Due to the rolling contact with the rolling element，Therefore, the trajectory is dark，The running track attached to the raceway surface is not abnormal，The load conditions are thus known，So when you remove the bearing，Please pay close attention and observe the running track of the raceway surface。
2017-06-13 Reading quantity 289
introduction：NTNThe meaning of bearing predesignation is as follows： 4T：4TTapered roller bearings ET：ETTapered roller bearings ETA：ET+Special heat treatment
2017-06-14 Reading quantity 278
introduction：B——40°Contact Angle； A——25°Contact Angle； C——15°Contact Angle； J——Pressed steel cage； LI——Machined copper alloy cage； DB——Back-to-back configuration； DF——Face to face configuration； CS——Radial clearance is greater than standard clearance.
2017-06-14 Reading quantity 265
introduction：NTNBearings are treated by vacuum degassing and off-furnace refining，Clean materials that reduce oxygen content and non-metallic debris。
2017-06-14 Reading quantity 239
introduction：The appearance color of the bearing can fully reflect the material condition of the bearing product，For most counterfeit bearing products，Generally, the article is in the selection of steel。Everybody knows，The price of steel is also an important reason for determining the price of bearing products，So some profiteers are using steel...
2017-06-14 Reading quantity 330
introduction：NTNBearing radial clearance refers to the radial clearance inside the bearing，Is allowed bearings in a tight fit after assembly，Under normal conditions, there is a wide internal clearance。
2017-06-15 Reading quantity 265
introduction：The size and quality of the rolling sound of the running bearing are checked with a sounder，Bearing even if there is a slight peel and other damage，Abnormal and irregular sounds can also be produced，JapanNTNBearings can be distinguished by sounders。
2017-06-15 Reading quantity 278
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