Tapered roller bearings and auto water pump bearing installation method

A, auto water pump bearing installation: the installation of the bearing should be carried out in a dry, clean environment conditions. Before installation should carefully check the shaft and the shell surface, convex shoulder of end face and groove and the connection surface machining quality. All cooperate with the surface of the connection must be carefully cleaned and remove burrs, must remove all traces of sand casting raw surface. Bearing should be taken before installation with petrol or kerosene wash clean, dry after use, and to ensure good lubrication, bearing generally use grease, oil lubrication may be adopted. Using grease lubrication, should choose without impurities, oxidation, rust and extreme pressure properties such as high quality grease. Grease filling quantity for bearings and bearing box - 30% of the volume 60%, unfavorable and overmuch. With sealing structure of double row tapered roller bearing and water pump shaft bearing has good filling grease, users can directly use, shall not be clean. Auto water pump bearing installation, it must be in the ring width on the circumference of a circle of equal pressure, to press the ring into, can not use ð ¨ +  top tools directly on bearing face, in order to avoid damage In the case of a small amount of interference, but at room temperature with the sleeve pin bearing ring end face, with a ð ¨ +  head banging on sleeve, through the sleeve ring is balanced If large quantities of installation, can use hydraulic press. Fashionable, should guarantee the outer end face and the shell shoulder end face, inner ring end face and the shaft shoulder end face pressure, there is no gap. When large amounts of interference, can use oil bath heating or sensor heating method to install the bearing, the heating temperature range of 80 ℃ - More than 120 ℃, 100 ℃, the highest can't. At the same time, nut or other appropriate method is applied to tighten the bearing, in order to prevent the bearing width after cooling contraction and make the clearance between the ring and the shaft shoulder. Single row tapered roller bearing installed last should undertake clearance adjustment. Clearance value should be used according to different conditions and cooperate with the amount of interference and specify the size. When necessary, shall be tested to determine. Double row tapered roller bearing and water pump shaft bearing in have been adjusted when delivery from factory clearance, installation time don't have to adjust. Bearing test should rotate after installation, the first axis of rotation or bearing box with the hand, without exception, with a power of no load, low speed, then according to the condition of operation gradually increase the speed and load, and detection noise, vibration and temperature rise, found abnormal, should stop and check. Running test normal rear deliverables. After the removal of 2, bearing, bearing removed intends to continue to use, should choose the proper removal tool. Remove the interference fit inside the ring, can only add tension on the ring, will never allow through the rolling body ( Outer ring) Remove power, otherwise the rolling element and raceway will be crushed. Three, bearing the use of the environment: according to the area of use and conditions of use and environmental conditions choose size, precision, with appropriate is the prerequisite of bearing life and reliability of the bearing. 1, use parts: tapered roller bearing is suitable for predominantly radial load under the combination of radial and axial load, usually in two sets of bearing pair is used, is mainly used in automobile wheel hub, before and after active transmission parts, such as bevel gear, differential, reducer. 2, allows speed: under the correct installation, lubrication good environment, allowing for bearing limit speed of 0. 3 - 0. 5 times. Generally under normal circumstances, with 0. 2 times the limit speed for the most appropriate. 3, allows tilt Angle: taper roller bearings are generally not allowed to have tilted axis relative to the shell hole, if there are any tilt, maximum not more than 2 degrees. 4, allow temperature: under normal load, and lubricant has a high temperature resistant performance, and abundant lubrication conditions, general bearing in - are allowed 30℃- - - Work under the temperature 150 ℃.