The Need For High Temperature Sealing Of INA Bearings

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The glass fiber reinforced nylon 66 cage used in INA bearings is suitable for a steady-state operating temperature of 120 degrees. The bearings are lubricated with oil. If the oil contains additives, it may shorten the life in the cage. If the temperature exceeds 120 degrees, CNPC will shorten the aging life of the cage. And should arrange to observe the oil change.

The grease filling requirement of the sealed bearing and the required allowable temperature of the contact seal life.

Cutting set temperature and cutting chip temperature, using experimental methods, through one tool, INA bearing can be used to calculate the distribution of heat transfer and temperature field theory to determine this piece is determined.

Sealed INA bearings use specially tested high-quality lithium grease. This grease can withstand a short period of high temperature of 120 degrees. If the stable temperature is 70 degrees or higher, the service life of standard lithium grease will be shortened.

To always work at high temperatures, you must use a special grease, but also pay attention to the need to use heat-resistant materials for sealing. The temperature of the standard contact seal should not exceed 110 degrees.

If you use a high-temperature sealing composite material, then you have to consider that this very effective fluorine-containing material is above 300 degrees, which will release gas and smoke harmful to your health. Especially when disassembling the bearing torch, pay more attention to this point.

The contact area between the INA bearing workpiece and the cutting tool, due to the effect of heat forming the temperature of the hot end, and the final side of the tool and the workpiece, maintain room temperature to form the cold end of the thermocouple. The thermoelectromotive force generated by the tool and the workpiece during the cycle. Meter or millivolt potential difference, forcing the record, according to the pre-calibrated thermocouple calibration curve tool, the contact surface of the tool and the workpiece with the average cutting temperature of the INA bearing can be measured by the workpiece.