Koyo insert insert ball bearing unit is installed a few problems that should be paid attention to

一个。 Force fit set-contained spherical ball bearing inner ring and shaft tight fit, outer ring and bearing hole is a loose fit, available press will koyo bearing to be pressed on the shaft, then put the shaft together with the bearing load bearing hole, when pressed on the bearing inner ring end face, cushion the assembling casing made of a soft metal materials ( Copper or mild steel) 。 Koyo bearing outer ring and bearing hole tight fit, inner ring and the shaft is a loose fit, the bearing can be pressed into the bearing hole first, then assembling casing diameter should be slightly less than the diameter of a hole. If the bearing ring and shaft and hole is a tight fit, install indoor ring and outer ring to pressure into the shaft and hole, at the same time assembling casing structure should be able to at the same time, pressure bearing inner ring and outer ring end face. b。 Heated by heating the bearing or bearing seat, the use of thermal expansion will fit into a loose fit installation method. Installation method is a kind of common and energy saving. This method is suitable for interference quantity larger installation of koyo bearing, the bearing before hot charging type or separable bearing ring into the fuel tank 80 - uniform heat 100 ℃, and then loaded on the shaft, as soon as possible out of the oil to prevent inner ring after cooling end face and the shoulder joint is not tight, insert ball bearing unit is cooled to axial tighten. Bearing outer ring and light metal bearing seat tight fit, by heating the hot charging method of the bearing, can avoid the mating surface scratch. Heating tank with bearing and should be at a certain distance from the bottom of a mesh, or hanging hooks in the insert ball bearings, koyo bearing cannot be on the bottom, in case of heavy impurities into the bearing or uneven heating, fuel tank must have a thermometer, strictly control the oil temperature shall not exceed 100 ℃, in order to prevent the tempering effect, reduce the hardness of the ring. 1. Rust resistance corrosion inhibitor is best can not dissolve in water. Grease should have good adhesion, use in the insert ball bearing grease must have antirust effect. And a layer of oil film can be formed in the steel surface. 2. Mechanical stability to leak. During normal operation, oil will become soft in machining. Grease can by the bearing to the bearings. If the mechanical stability of the oil is insufficient, operation process, can make the structure of the soap grease mechanical disruption of oil was damage, and loss of lubrication. 3. Oil seal koyo bearing operation process, the oil seal is necessary maintenance set-contained spherical ball bearing and lubricant from the barrier of external contamination. Regardless of debris or moisture can penetrate bearings, in case of causing damage to it. Have a bearing on the correct device goes is the longest service life of the important factors. At the same time, must pay attention to the purity of the bearing, bearing of correctness and choose the proper installation and maintenance tools. In addition, the bearings must prevent contamination by pollutants and moisture, and ensure the right device and lubrication. Therefore, the design of the bearing arrangement, the condition of the oil seal, type of lubricants and lubrication cycle, and special care are the same and important role. 4. Mixed oil if two incompatible oil mixture, never can't compatible to the oil to mix. Usually will soften its consistency, finally may be caused by grease is easy to loss set-contained spherical ball bearing damage. If you don't know which bearing the original use of grease, is required to completely remove bearing inside and outside of the old oil, can add new grease. 5. The classification of the grease lubrication grease consistency and ability is operating under a certain temperature under the influence of working temperature of koyo bearings must choose under the same temperature has the correct consistency and good lubrication effect of oils and fats. Oil is made of different working temperature range can be roughly divided into low, medium temperature and high temperature with grease. At the same time, mainly according to the temperature and the working conditions to distinguish: oil can be classified according to its allowable working temperature. There is a certain type of oils and fats known as resistance to squeeze or extrusion and add molybdenum disulfide, at the same time, among them with additives to enhance the strength of the lubricating oil film. 6. Choose grease the important factor in choosing a grease, if the wrong choice grease all preventive measures of koyo bearing is useless. Base oil viscosity in the working temperature is it is important to be able to provide adequate lubrication effect of viscosity is mainly affected by temperature, the temperature rise and fall, when the temperature drop is increased. Therefore, it is necessary to know the working temperature of base oil viscosity. Machinery manufacturers are usually specified use some grease, however most of the standard grease applicable range is very wide.