INA joint bearing damage reason analysis of the inspection

INA coat of the bearing and seal cover large offshoring, oil spills, discoloration, bearing clearance, crack damage, corrosion, etc. Once found in a check appearance fault characteristics, to seriously careful judgment, determine the accurate parts of the fault. Shaft end gap of outer ring and two seal cover is too big, found that the bearing outer ring gap of front end and the seal cover is too big, and have more oil overflow, is a joint bearing outer ring split. The size of the 1, stripping load is too big: check the load. Correct the load conditions. Install the bad ( Non linear) Check the load and the size of the institute used INA bearings again. Correct the load conditions. 2, torque load foreign invasion, into the water: improve the sealing device, when stop rust. Improve the matching of rolling parts surface finish. Presented with mild wear dark side, dark surface by the surface of multiple deep down inside to 5 - Tiny cracks of 10 m, and on a larger scale slightly off ( The tiny stripping) Fracture when installation has taken a knock. Improve the sealing device. 3, poor lubrication, lubricants inappropriate: use appropriate lubricant viscosity, improving the lubrication method. Matching rolling parts surface finish is not good. Foreign body into the lubricant. Choosing the right lubricant. 4, bearing clearance is not appropriate. Bearing box accuracy is bad, uneven rigidity of bearing box: check the shaft and the precision of the bearing housing. Check the clearance. 5, axis deflection of big rust, erosion, abrasion and creasing check shaft, the precision of the bearing housing. Joint bearing the load bearing rotates, the inner ring and outer ring raceway surface or rolling decent present designed stripping due to rolling fatigue phenomenon. The so-called card is produced in the slip surface injury injury minor burns summary of part of the surface damage. Lubricant bad cause surface roughness. Stripping lubricant is not appropriate. Improve lubricant and lubricating method. INA bearing grease is usually make a similar viscosity or apparent viscosity, said when, on the viscosity of grease must specify the temperature and shear rate. Similar viscosity index can be used to control the low temperature fluidity and pumping. Measure bearing grease performance at low temperature is one of the important index of low temperature torque, namely at low temperature ( - 20 ° c below) Grease block joint bearing rotational degree of low speed flows, the low temperature torque of the grease by the starting torque and rotation torque after 60 mm average said. The evaporative (INA bearing grease C) Said in the long-term use under condition of high temperature grease, grease oil volatilization, evaporative as small as possible. The evaporative mainly depends on the nature of the lubricating oil and fat fractions.