Early damage much more common than the bearing burnt of sliding bearing, bearing early damage prevention is very important. Correct maintenance of sliding bearing is to reduce the effective approach to early damage of bearings also extends SKF bearings life assurance. Therefore, routine maintenance and repair of engines, attention must be bearings alloy surface, back, head and angular appearance and shape at the edge, such as indications of abnormalities or when there are more than half worn, they identified, and take the appropriate measures to improve working conditions for bearings, pay attention to the prevention of early damage of sliding bearing.
1 strictly diesel engine block main bearing hole concentricity and roundness measurement. For block main bearing hole concentricity measurement must be measured with the axis of the engine block size for more accurate, simultaneous measurement of crankshaft runout, to match Bush's thickness, the bloom gap in the axis agreement. Diesel engines run w, speed, and so on, before the assembled unit must be coaxial for main bearing hole detection, ductile iron crankshaft length is not greater than 0.14mm, the steel crankshaft length is not greater than 0.12mm, and roundness of the bearing hole of cylinder block, cylinder requirements. Beyond the limits you to disable, if within the limits, then grinding (coated with the right amount of red powder on the bearing, mounted after the crankshaft turns, and then remove the bearing cover to check Bush, after scraping the hard point of protruding parts, measuring changes in size, thus ensuring reliability.
2, increasing bearing repair and Assembly quality, strictly control the connecting rod on the bus pass rate. Improving the quality of SKF bearing hinge equipped with to ensure smooth no spot on the back of the bearing, position bump intact;
3, spring open itself as a 0.5~1.5mm, which is guaranteed to assembling rear axle with its elastic and the housing bore is close;
4, the old and new connecting rods are required to measure its degree of parallelism and distorted, for unqualified prohibition of connecting rod in the car;
5, mounted on the upper and lower housings on each end of the Bush bearing plane should be high 30~50mm, high volume ensures that the required torque tighten the bearing cap bolt and bearing rear bearing closely enough friction lock, bearing not loose, thermal effects, to prevent erosion and wear of the bearing;
6, SKF bearing faces of scraping method cannot be used to achieve 75%~85% contact prints measure shall, without scraping on the clearance of the bearings and bearings to meet the requirement.
7, moreover, Assembly to check the crankshaft and bearings attention processing quality, specification for strict implementation of the repair process, prevent caused due to improper mounting methods not being installed, as well as the bearing bolt torque does not have or does not meet the requirements, which results in deformation and stress concentration, leading to early damage of SKF bearings.



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