KOYO bearing installation method and bearing removal method

The stand or fall of the installation method of bearing KOYO bearing or not, will influence the accuracy, bearing life and performance. Therefore, please fully study the installation of the bearings that carried out in accordance with the operating standards including the following items, please KOYO bearing installation. To have a clean, KOYO bearings and related parts grease lubrication of the bearing and oil seal or dust cover on both sides, seal bearing without cleaning before installation. Second, check the size and finishing of three related parts, installation method of KOYO bearing installation should be according to the bearing structure, size and cooperate with properties of bearing parts, pressure should be directly in the tight fit on the ring width, shall not be passed on roller pressure, KOYO bearing installation commonly adopt the following methods: a. Force fit KOYO bearing inner ring and shaft tight fit, outer ring and bearing hole is a loose fit, press the bearing to be pressed on the shaft are available, and then put the shaft along with KOYO bearing load bearing hole, when pressed on the KOYO bearing inner ring end face, cushion the assembling casing made of a soft metal materials ( Copper or mild steel) , the inner diameter of the casing assembly should be slightly larger than the diameter of a journal, outside diameter than the bearing inner ring guard slightly smaller, in order to avoid pressure in keeping the frame. 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 KOYO 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, so the 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 bearing installation, hot charging front bearing 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 shoulder joint is not tight, bearing axial fastening again after cooling. Bearing outer ring and light metal bearing seat tight fit, heating KOYO bearing hot charging methods, 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 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. c。 The installation of the cone bearing cone hole can be directly installed in a shaft with taper bearing neck, or load set set of the cone, and the withdrawal of the tightness of cooperate, KOYO bearing radial clearance reduction is available to measure, therefore, before installation should be measured bearing radial clearance, the installation process should often measure the clearance in order to meet the need of clearance reduction is, commonly used while installing lock nut installation, also can adopt the method of heating installation. d。 The installation of the thrust bearing thrust bearing of the matching of the thorough and axis is commonly transition fit, seat and the bearing holes with the general for the clearance fit, so the KOYO bearing is easy to install, two-way thrust bearing axial spring should be fixed on the shaft, in order to prevent the relative to the axis of rotation. KOYO bearing installation method, usually is the situation of the axis of rotation, so the inner ring cooperate for win cooperate with shaft, with the bearing outer ring and bearing chamber for clearance fit. Four, bearings after installation, check KOYO bearing of removing the disassembly and installation method of bearing the same done carefully. Careful not to damage the bearing and the parts, especially interference fit the bearing down, and the operation is difficult. So, in the design stage to consider in advance to facilitate disassembly, designed and manufactured according to need remove the tools is also very important. When disassembling, according to the drawings the disassembly method, sequence, investigation of bearing with conditions, to ensure foolproof disassembly operations. 1, the outer ring of the removal of removal of interference fit of the outer ring, beforehand in setting several outer shell on the circumference of a circle of extrusion screw with screws, one side equal to tighten the screw, remove. The screw hole cover usual blind plug, the separation of tapered roller bearing type bearing, shoulders set several incisions in the shell, using block, remove by press, or tap the disassembly. 2, remove the inner ring of the remove of cylindrical hole bearing, can use simple mechanical pull out the latest pressure. At this time, must pay attention to the inner ring under the pulling force. Remove the oil pressure method is used to large bearing inner circle. By setting on the axis of hydraulic oil hole, in order to make easy to pull out. Width of the bearing is oil pressure method and drawing fixture and disassembly operations. NU, NJ cylindrical roller bearing inner ring remove can take advantage of the induction heating method. In a short time heating the local, make the inner ring expansion after drawing method. 3, remove the removal of relatively small band of taper hole bearing set set of KOYO bearings, with fastening on the shaft gear support inner ring, the nuts back a few times, use the block with a hammer beating the disassembly. Large bearing, using the hydraulic remove easier, in the oil hole on the shaft taper hole pressure oil, make the inner ring expansion, remove the KOYO bearing method. Operation, has a bearing may suddenly emerge, it is best to nut used as gear block as well.