Needle roller bearing repair mechanism principle pay attention to matters

Needle roller bearing is mass production machinery parts, and manufacturing accuracy requirement is very strict, technical specialization degree is high, so for most of the easy to get the bearing varieties, should be to buy more economical than repair, in addition to economy, repair of bearing and its technical, which requires the repairer fully understand the bearing corresponding technical requirements, and the bearing and its components on the structure, process, and the characteristics of the material, otherwise it is difficult to guarantee the effect of bearing repair is required. ( 我) Benchmark unchanged composite repair method. When repair and adjust the precision of dimension chain, according to the principle of benchmark superposition, only use a datum as a benchmark, namely the design basis, and all other effect the repair surface as a benchmark. This combination of repair benchmark, easy to check the accuracy, reduce error accumulation. For example, the speed control type hydraulic coupler in the repair, often based on the bearing body. ( 2) Benchmark transform composite repair method. Sometimes design benchmark deformation is too big, can't use, will choose the other side as a benchmark, at the same time to carry on the dimension chain integration. For example, if the deformation of the bearing body is too big, should be based on rotating components, reprocessed correction bearing body, and then according to the size of reprocessed out bearing body, adjust the assembly dimension chain, and replacement of the adjusting ring method, according to the order of the dimension chain inspection repair, closed loop control precision is achieved at last. Another role is to prevent the TIMKEN bearing seal grease leak from the bearing components. If the oil spill, will disturb the normal lubrication bearing, quickly make bearing burn out because of the fever. Another bad seal oil spill spread not only, but also will contaminate the products of mechanical equipment and processing. Therefore, to make the machine run properly, bearing must have good sealing device. When choosing TIMKEN bearing seal type should consider the following factors: 1. TIMKEN bearing ring the magic work. 2. The structure characteristics of TIMKEN bearing parts. 3. The speed of the TIMKEN bearing ( Bearing the circumferential speed) 。 4. The types of TIMKEN bearing lubricant ( Lubricating oil or grease) 。 5. The TIMKEN bearing temperature.