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Technical articles
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。
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。
NTNThe meaning of bearing predesignation is as follows： 4T：4TTapered roller bearings ET：ETTapered roller bearings ETA：ET+Special heat treatment
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.
NTNBearings are treated by vacuum degassing and off-furnace refining，Clean materials that reduce oxygen content and non-metallic debris。
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...
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。
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。
NTNThe daily inspection and maintenance of bearings are as follows： 1.InspectNTNOperating temperature of bearings,Require on65Degree or below. 2.InspectNTNThere are no pitting points inside and outside the bearing runway,InspectNTNBearing pits,Cracks and other defects.
NTNBearing failure phenomena are generally manifested in two kinds，First, the temperature of the bearing installation part is too high，Second, there is noise during bearing operation。
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