Prevention method of burning diesel engine bearings

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Prevention methods of burning diesel engine bearings:
Plain bearings early damage than the bearings burned much more common, and therefore very important to prevent damage to the sliding bearing early. Plain bearings correct maintenance is an effective way to reduce the damage of early bearing, but also a reliable guarantee for extended bearing life. Therefore, in the day-to-day maintenance and repair of the engine, must pay attention to the bearing surface of the alloy, the back end and the edge of the edges and corners of the appearance of the shape, if unusual or more than half wear a sign, it is necessary to carefully identify the reasons and take appropriate measures to improve the working conditions of the bearing, the emphasis on the prevention of damage early on the sliding bearings.industrial bearings
1, stringent diesel engine block main bearing bore concentricity and roundness measurements. For the measurement of the body main bearing bore coaxial degree, the size of the coaxial degree of the diesel engine body must be measured out more accurately, and simultaneously measure a runout of the crankshaft, the thickness of the p ad in this optional oily gap to achieve consistency in the respective axes . Where diesel engines occurred in the grind Watts, Speed, main body bearing bore concentricity must be detected prior to assembly, ductile iron crankshaft all grow up steel crankshaft all grow up to 0.12mm 0.14mm, while the body bearing hole roundness, cylindricity requirements. If the overrun is disabled within the limits of the grinding method (that is painted in the bush on the right amount of red lead powder into crankshaft rotation, then remove the bearing cap to check the bush, with hard convex point a site scraping processing and measuring the change in size, thus ensuring reliability. valve inlet pump industrial washing machine
2, bearing repair and assembly quality, strict control of the car pass rate on the rod. Improve the quality of bearing hinge with the back of the bearing is smooth and free of spots, positioning bump intact;
3, the bounce amount to 0.5 ~ 1.5mm, which can guar antee the bush with its own elastic bearing hole after assembly to fit tightly;
4, new, old rod shall be required to measure parallelism and distorted prohibit unqualified rod on the car;
5, in the upper and lower bearing seat two at each end of the bush should be above the plane of the bearing block 30 ~ 50mm, higher than the amount guaranteed to tighten the bearing cap bolts to the specified torque bearings and bearing closely with enough friction Health self-locking force, the bearings will not loose, thermal effects, prevent bearing ablative and wear;thin section ball bearings
6, the bearing face can not be achieved by scraping with 75% to 85% of the contact patch for the measure, with the gap to meet the requirements of the bearing and journal without scraping.
7 In addition, the assembly should pay attention to check the crankshaft journal and bearing processing quality, strict imp lementation of the repair process specifications to prevent uneven or non-compliance is not properly installed, and bearing bolts torque caused by improper loading method, resulting in the bending deformation and stress concentration, leading to early bearing damage.