Japan's bearing assembly is analysed

The stand or fall of Japan bearing assembly analyses bearing installed 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 bearing installation. A, clean bearings and related parts for 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, the installation method of 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, Japan bearing installation commonly adopt the following methods: a. Force fit tight fit bearing inner ring and the shaft, the 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 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) , 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 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, 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 the installation of the 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 shoulder joint is not tight, bearing axial fastening again after cooling. Bearing outer ring and light metal Japan 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 bearings, bearing 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 bearing radial clearance reduction is available to measure, therefore, before installation should measure the 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 this kind of 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. 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, examination and five bearings after installation, lubricant to add the installation of the high speed precision angular contact ball bearing high speed precision angular contact ball bearing, mainly used for high speed rotating load lighter, bearings and high precision, high speed, low temperature rise, low vibration and service life. Often for high speed motorized spindle bearing parts installed in pairs, is the key to the high-speed motorized spindle surface grinding machine fittings. The main technical indicators: 1. Bearing precision index: more than GB / 307. 1 - 2 94 P4 level precision. High-speed performance indicators: dmN value of 1. 3 to 1. 8x 106 /min 3. The service life ( On average) :> 1500 h high-speed precision angular contact ball bearing service life had a lot to do with the installation. Japan bearing installation note: * bearing installation should be clean, clean room, bearing should be carefully selected, bearing with baffle passes through grinding, and in keeping the baffle on inner and outer contour under the premise of baffle parallelism should be controlled below 1 um. * bearing should be cleaned before installed and when cleaning inner ring ramp up, flexible hand induction, no stagnation, air-dried, into the specified amount oil, if oil mist lubricating oil should be in a small amount of oil mist; * bearing installation should use specialized tools, force uniform, do not knock; * bearing deposit should be clean and ventilated, non-corrosive gas, relative humidity is not more than 65%, long-term storage should be rust on a regular basis. Tapered roller bearings, water pump shaft bearing installation