With the SKF oilless bearing load quality is introduced

For heavy load, usually should be lighter than the load and normal load situations fit as tight. The heavy load, the interference should be. Bearing device, remove the way, should according to the structure of SKF bearing, size, and cooperate with oilless bearing parts of nature. Therefore, vigorous discussion in design and assembly department. To device in accordance with the specification. The task of this project are as follows: the usual specification ( 1) Bearing inner ring and the shaft is a tight fit, outer ring and shell as a loose fit, can press the bearing pressure equipment on the bearing first, then put the shaft in shell, together with the bearing pressure equipment in SKF bearing pad on face when assembling casing of a soft metal materials ( Copper or soft steel tube) 。 Assembling casing inside diameter should be slightly larger than the diameter of a journal, outside diameter should be less than the rim diameter of bearing inside diameter, to avoid pressure on the rack. A large number of device without oil bearing can add a handle on the casing. ( 2) Bearing inner ring and the shaft, the outer ring and shell holes are tight fit, assembling casing can end should be made at the same time compression bearing inner and outer ring width of the circle, or use the disc and assembling casing, make the pressure at the same time to the inside and outside the circle, the SKF bearing pressure into the shaft and housing. Method is particularly suited to such a device can automatically adjust the heart to the heart of the spherical bearing device. ( 3) Bearing outer ring and shell holes for tight fit, inner ring and the shaft for a loose fit, the bearing can be pressed into the housing first, then assembling casing diameter should be slightly less than the diameter of the shell hole. ( 4) The SKF bearing before heating equipment, hot charging or do not bearing ring into the fuel tank or dedicated heater heating to 80 ~ 100 ℃ (on average Should not exceed 100 ℃) 。 Imported bearing cage quality that is very good, but in the absence of oil bearing in daily operation, incorrect operation can reduce the service life of bearing cage, even lead to the fracture. Installation does not reach the designated position, slope, etc of the large amount of interference of the clearance is reduced, increasing friction heat production, the surface of the softening, abnormal early spalling, along with the expansion of peeling, flaking, foreign body into the cage pocket hole lead to keep running block and generate additional load, aggravated the wear and tear in the cage, the cycle of such deterioration, it may cause maintains a fracture. Oilless bearing operation is in inferior position, easy to form adhesive wear and worsen working surface state, adhesive wear of the tear easily into the cage, the cage cause abnormal load, a bracket will be likely to cause fracture. Creep multi-finger ring sliding phenomenon, in under the condition of the mating surface interference is enough, because the sliding and make the load point to move around, produce relative axial ring or shell to circumferential direction location deviation phenomenon