About the INA bearing installed several technique methods

The installation of the bearing is correct, directly affecting the service life of INA bearings used in precision, and performance. Manner using copper bar installed and manual 'this is a simple method of small and medium-sized bearings. When the bearing inner ring is tight fit, a loose fit for outer ring, the copper rod bearing inner ring end face and directly with hammer percussion tongbang, through tongbang force, will slowly INA bearings loaded on the shaft. Bearing inner ring is larger, can use copper bar around the bearing inner ring end face even hitting, avoid by all means just knocking on one side, also can't overexert, symmetrical knock, knock on slowly, gently to avoid inclined crack bearing. This installed using sleeve this method and use of copper rod bearing point is the same. It is a direct pressure on the bearing face the sleeve ( When the bearing is installed on the shaft pin inner ring end face; In a shell hole pressure within the outer end face) , hammer percussion force can be evenly distributed in the installation of INA bearings on the ring width, and can be used together with the press, the installation effort to save time, quality is reliable. Install the sleeve should be used in the soft metal manufacturing ( Copper or low carbon steel tube) 。 If the bearing installed on the shaft, sleeve inside diameter should be slightly bigger than the journal 1 - 4 mm, outside diameter is slightly less than the bearing inner ring rim diameter, or will be subject to the thickness of the sleeve, its thickness should be equal to the thickness of bearing inner ring made two-thirds - 4/5, and the sleeve ends should be flat and vertical tube body. When installing hole here if bearing, the sleeve diameter should be slightly smaller than bearing outside diameter. 3. There is a press into law: install pressure should be directly applied to interference fit of bearing ring width, otherwise it can be crushed on bearing working surface, lead to bearing damage quickly. 4. The installed heating for interference quantity larger bearings or large size bearings, to facilitate the installation, use principle of heat bilges cold shrink, heat the bearing in the tank with copper bar, the sleeve, and hammer after installation. General control heating temperature under 100 ℃, 80 - 90 ℃ is more appropriate. When the temperature is too high, easy to cause bearing ring raceway and rolling body annealing, hardness and wear resistance, decrease in bearing life and scrapped prematurely. INA bearings and shaft is commonly transition fit, seat normally cooperate with bearing hole clearance fit. The center axis of the two-way bearing ring should be fixed on the shaft, 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. Installing a bearing, to fix the dial gauge box shell end face, make the table touch the top of the head in the ring raceway on bearing axle bearing, rotation and observe the dial gauge pointer, if the deflection of the pointer, shaft ring and shaft centerline is not vertical. If box shell hole deep, also can use extended dial gauge head test. This is a very good inspection shaft and shaft centerline verticality of the method. Bearing the wrong installation, bearing not only don't work properly, and the matching surface will badly worn. Due to axial ring and seat and the difference is not obvious, the assembly should be extra careful, cannot appear upside. Install right should be its seat can automatically adapt to roller rolling, ensure the rolling element is located in the top and bottom ring raceway. In addition, INA the seat ring of the self-contained bearing holes should also be left between 0. 2 - 0. 5 mm clearance to compensate parts processing, installation error caused by inaccurate, when the bearing ring during operation center offset, the clearance can be adjusted to ensure the automatic, the avoidance of friction, make its normal operation. Otherwise, will cause bearing severe damage.