Bearing assembly, maintenance, disassembly grasp these points, life progress three times!

Bearing is a kind of important modern mining machinery parts and components, its quality relates to the whole operation of the equipment. This article introduced the bearing device, maintenance, disassembly and common problems, hope to help everyone's consumption. Device directly affects the precision of the bearing device for bearing, performance, service life, thus, design and assembly department to energetic discussion about bearing device, in accordance with the following code of conduct to stop: ( 1) Cleaning bearings and bearing related department; （ 2) Check the size of the associated components and finish machining conditions; （ 3) Device ( Line device before, just opened the bearing packing) ； （ 4) After good bearing device check; （ 5) Smooth supply agent. Ordinary smooth smooth, not to clean, smooth filling grease directly. Also need not wash oil smooth smooth, ordinary, but, instrument using or high speed bearings, etc. , to wash with clean oil, remove rust inhibitor) on the bearing. Remove the rust inhibitor of bearing, easy to rust, so cannot be placed. Moreover, has smooth sealed bearing grease, not to clean direct use. Bearing device, owing to the different bearing structure, with other conditions. More than normal, because as the axis of rotation, so the inner ring interference fit. Cylindrical hole bearing, multi-purpose press pressure into, or multi-purpose hot charging method. Taper hole, device on the taper shaft directly, or use the sleeve device. 01, cylindrical hole bearing device ( 1) By press pressure into the small bearing general use press press into the solution. Bedding block, pad into the inner ring with press closely contact pressure to the inner ring and silently at the axle gear shoulder. Will block device inner ring, outer ring fitted is forming roll indentation, the cause of the crushed, so be absolutely stop. Operation, to advance oil the mating surfaces. Tapping device with a hammer, as a last resort to mat mat, circle piece of work. Used this kind of practice is limited to the status of the surplus quantity is small, can not be used in large amount of interference, or medium and large bearing. Such as deep groove ball bearings, such as the separation type bearings, inner ring and outer ring are the demand for interference quantity device, with block MATS, with a screw or hydraulic, the inner ring and outer ring into at the same time. Self-aligning ball bearing outer ring is easy to lean, if not interference fit, also had better mat block device. , like cylindrical roller bearing, tapered roller bearing separation type bearings, able to inner ring and outer ring gear to the shaft and shell respectively, separating the device good inner ring and outer ring, the key is the both firmly closed, so that the center does not produce deviation, barely pressure membership form of raceway surface injury. （ 2) Hot charging way of large bearing, the force that press a fashionable demand great, so it is difficult to press in. Therefore, in the heart of the oil bearing heating, contraction, then loaded on the axis of hot charging method widely used. Using this method, can not add inappropriate to bearing force, finish your homework in a short period of time. Heating temperature of the bearing to the bearing size, the required amount of interference for reference. Hot charging operation about attention to matters as follows: ( a) The bearing must not be heated to above 120 ℃; ( b) To make the bearing is not direct contact with the bottom of the tank, can think put bearing on the metal mesh, or bearing hung; ( c) Bearing heated to higher than the required temperature 20 ℃ to 30 ℃, in order to not attack in the inner ring cooling operation, difficult to device; ( d) Device, bearing cooling, width contraction, so use shaft nut, or other suitable way, make it tight, in case of gap between inner ring and bearing retaining shoulder.