Angle Contact Ball Bearing Installation Method

The fullness of the angle contact ball bearing and the shaft is generally for transition, the seat ring and the seat hole are generally for the gap fit, so this bearing is easier to install, the middle shaft of the two-way thrust bearing should be fixed on the shaft to prevent rotation relative to the shaft. Bearing installation method, in general is the case of shaft rotation, so the inner ring and shaft matching for the over-win, bearing outer ring and bearing chamber matching for clearance.

Bearing installation method, depending on the bearing structure, fit, conditions vary, generally, because most of the shaft rotation, so the inner ring needs to be over-the-line. Cylindrical hole bearings, multi-press, or multi-use thermal loading method. For the case of a cone hole, mount directly on the taper shaft or with a sleeve. When installed to the housing, the general play fit with a lot, the outer ring has a profit, usually with the press press, or there is a cooling after installation of the cold shrink fit method. Use dry ice as a coolant, cold shrink with the installation of the occasion, the air water branch condensed in the corner contact ball bearing surface. Therefore, proper rust protection is needed. When checking or replacing parts on a regular basis, the bearings need to be removed. Usually the shafts and bearing boxes are almost always used, and bearings are often used. Therefore, the structure design should take into account the removal of bearings, not to damage bearings, shafts, bearing boxes and other parts, but also to prepare appropriate removal tools. When removing a still-fit collar, the pull can only be added to the ring, and the ring must not be pulled by the rolling body.

The installation of angular contact ball bearings must be carried out under dry, clean environmental conditions. The processing quality of the mating surfaces of the shaftands and housings, the end faces of the shoulders, grooves and the connecting surfaces should be carefully examined before installation. All mating surfaces must be carefully cleaned and burrs removed, and the unprocessed surfaces of the castings must be removed from the sand. The angle contact ball bearing is installed in three forms, back-to-back, face-to-face and series. When mounted with a back-to-back (the wide end face of the two bearings is relative), the contact angle of the bearing diffuses along the direction of the swing axis, which can increase its radial and axial support angle rigidity, and the resistance to deformation is greatest; Because the inner ring of the bearing extends out of the outer ring, when the outer ring of the two bearings is pressed together, the original gap of the outer ring is eliminated, which can increase the preload of the bearing, and when installed in series (the wide end of the two bearings in one direction), the contact angle of the bearing is the same and parallel, so that the two bearings share the working load in the same direction. However, in order to ensure the axial stability of the installation, two pairs of bearings arranged in series must be installed at both ends of the shaft.

Bearings should be installed before the first with gasoline or kerosene cleaning, drying after use, and ensure good lubrication, bearings generally use grease lubrication, can also be lubricated with oil. When using grease lubrication, you should choose grease with no impurities, anti-oxidation, rust prevention, extreme pressure and other superior performance. Grease filling is 30%-60% of the volume of bearings and bearing boxes, not too much. Bearings with sealed structures and pump shaft connection bearings are filled with grease and can be used directly by the user and can no longer be cleaned.

Angle contact ball bearing installation, must be applied equal pressure on the circumference of the end of the ring, the ring will be pressed into, not with the hammer and other tools directly hit the angle contact ball bearing face, so as not to damage the bearing. In the case of small excess, the end face of the bearing collar can be pressed with a sleeve at room temperature, the sleeve is beaten with a hammer, and the sleeve is balanced into by the sleeve. Hydraulics can be used when installing in bulk. When pressing in, should ensure that the outer ring end face and the shell shoulder end face, the inner ring end face and the shaft shoulder end face pressure, do not allow gaps.

When the profit is large, can be used oil bath heating or sensor heating angle contact ball bearing method to install, heating temperature range of 80 degrees C-100 degrees C, the maximum can not exceed 120 degrees C. At the same time, apply nuts or other appropriate methods to tighten the bearings to prevent a gap between the collar and the shaft shoulder by shrinking in the width direction after the bearing is cooled

The angle contact ball bearing installation should be adjusted at the end of the play. The clearance value should be determined according to the different operating conditions and the over-profit size of the match. If necessary, tests should be carried out to determine. Double-row conical roller bearings and pump shaft coupling bearings have been adjusted at the factory and do not have to be adjusted at the time of installation.

Angle contact ball bearing strain should be installed after rotation test, first used for rotating shaft or bearing box, if there is no abnormality, then with power for loadless, low-speed operation, and then gradually improve the rotation speed and load depending on the operation conditions, and detect noise, vibration and temperature rise, found abnormal, should stop operation and check. The operation test is normal before it can be delivered.

When the angle contact ball bearing is removed and intends to continue to use, an appropriate removal tool should be used. The ring that is removed from the over-the-hook can only be added to the ring, and the removal force is never allowed to pass through the rolling body, otherwise the rolling body and the racetrack will be crushed.