SKF bearing cone hole in the bearing installation method

Cone bearing can be directly installed on the conical journal, also can use the set set remove set as intermediary, installation on the cylindrical shaft neck, but no matter under what circumstances, taper hole of the inner ring quantity according to SKF bearing clearance reduction is measured. Radial clearance reduction is the SKF bearing before installation and after installation of the difference of the radial clearance. Before installation to measure the SKF bearing radial clearance, the original installation time to measure the clearance again and again, until meet and match the ideal amount of interference with the radial clearance reduction is radial clearance reduction is the measurement of SKF bearing is also available on the conical journal of advance amount measurement instead. For standard taper 1:12, radial clearance reduction is about 1/15 the amount of axial propulsion, under the ratio, for the solid shaft, with the interference amount is only 75% ~ 85% have the effect of the inner ring expansion. Large spherical roller SKF bearing and cylindrical roller bearing radial clearance reduction is usually measured with a feeler, note of spherical roller bearings SKF bearing must be respectively from two end face measuring two columns in the radial clearance of roller, roller in only two columns of clearance value at the same time, to ensure the inner ring and outer ring are relatively. SKF bearing small conical hole because of the radial clearance is too small and cannot use the feeler, dial gauge available contact shaft or SKF bearing to measure to promote the lifting capacity of this notice is the quantity of radial clearance, the elastic deformation to rolling element and raceway was without a second thought, promote SKF bearing or bearing used in force, and their weight should be the same. Large SKF bearing in removing set, and can greatly save Labour, and particularly suitable for position restricted cannot use the occasion of big hook spanner. Specific operation is: put the hardened inserts for S remove the set of the end, will gently tighten nut M, then uniformly distributed along the circumference of the hardened bolt K evenly tighten, until to obtain the clearance reduction is required. Due to remove the set on the conical surface friction self-locking, so even take down device is not loose, so it is safe to take down the nut M, to switch to fixed nut instead, and will remove the set pressure. At the time of installation must be in the withdrawal of mating surfaces coated with a thin layer of lubricating oil, in order to reduce friction, convenient installation. But attention must never oil thicker, otherwise you will lose remove the set of self-locking ability, when to take down the screw and nut in order to change the fixed nut, remove the cover will come loose from the setting position, caused by installation error. In addition, in the working process of the lubricant will gradually have been pushed out or escape from a crack in the match, the SKF bearing the original interference fit loose. When removed has been shipped SKF bearing and install it in a journal, not as the same to the nut twist to the in situ, after long time work for SKF bearing system, the original has become loose, this is because the thread is loose, mating surface pressure and have a permanent deformation, and have certain wear due to friction. In this case, must be to measure the radial clearance when installing reduction is, and push the quantity or the axial expansion value. For large SKF bearing, such as the hydraulic installation method, easy installation and fast and more convenient disassembly. For the removal of all the standard sets and with threaded shaft end piston hydraulic nut to SKF bearing can also be used in a tapered shaft neck, or reservation will remove the casing pressure into the cylindrical shaft neck position. Piston type hydraulic nut structure and its working principle is: with the help of a manual oil pump through the high pressure hose pressure hydraulic oil cylinder ( Nut) , oil cylinder to its fixed on the shaft end with screws, screw the overhanging end of the piston push on the end face of SKF bearing inner ring, oil pressure driven piston will push along the cone shaft located in SKF bearing, according to the pipeline of the pressure of the oil pressure gauge, can be broadly determine the amount of advance SKF bearing. For SKF bearing installation personnel with rich experience, with the hand running in SKF bearing to sense its operating flexibility, SKF bearing can also control the amount of interference and don't need a meter measurement, this for small cone bearing installation, especially in this way, but should pass strict test may apply a sure, and shall not have one thousand negligence.