SKF bearing import: installed two 7004 bearing

Rust bad transportation process, especially for stiffness and the influence of temperature is more significant, so should be according to the requirement of the machine tool performance reasonably configuration main shaft bearing. Because the reducer for unplanned downtime, under the premise of reinsurance precision repair time as short as possible, the enterprise has the capability of machining, but worry about traditional repair welding technology thermal effects on the shaft, and repair welding repair because of the need to control thermal stress, so the repair welding for a long time. CAM bearing features: thick outer ring needle roller bearing and bolt combination structure; Size has a metric and inch series; Within the bolt bearing set has lubricating oil; For the convenience of installation, in the big end of bearing design have a 'word' and 'hexagonal pass' wrench assembly way; Outside the outer surface of the cylindrical and spherical shape, could be selected according to the practical applications; Full roller type applicable and bear big load, at a lower speed; When installing bearing eccentric type is convenient and accurate adjusting bolt axis position. This reduces surface and greatly reduce the service life of bearing, in the process of work, when the roller press bearing is the main power transmission parts, and machinery maintenance of the device. Dust, no guard of cylindrical roller bearing inner ring or outer ring, internal ring and outer ring can be to relative axial movement, so it can be used as free end bearing. & emsp; & emsp; Introduction of accident & amp; emsp; & emsp; Found on a wind farm in the background software units 'generator speed' down, then triggers the 'generator bearing temperature on the high side', 'generator bearing temperature is too high,' multiple failures. In the realization of the design, the safety factor of the screw and barrel of big, second order is barrel and reducer coupling bolt, the nose and the barrel of the coupling bolt, and the safety factor of safety pin or security key is small. However, how much you know about bearings? Today is big and small make up together to learn ~ has what function? Inner ring usually and shaft tight fit, and with the axis of rotation. Solution: to replace bearing, lubricating oil contains some figure stern tube metal chips to run according to the crew's description of the above, can preliminary judgment stern bearing have been part of the burning fuse. Mm, if the interference amount more than, I in the rotational speed of motor of abnormal noise and vibration when I judge is bearing was broken, so I want for my motor bearing need to be replaced. Black is a complete sentence, can be thought of bearing base minus tolerance of hole system is in order to obtain a close cooperation, in conjunction with the same name which cooperate with unapt too tight influence bearing function. Improper assembly will lead to appear afore-mentioned A variety of bearing fault forms, as well as the following several ways: A, mismatch: bearing inner hole with the shaft with the use of hole system, the matching of the cylindrical bearings and bearing hole adopts the basic shaft system.