How to install spherical roller bearing

1 radial clearance measurement and adjustment in order to ensure the operation of the bearing inner ring, roller, and thermal expansion and reserved axial-radial radial clearance will not too big or too small, prevent installation clearance later change, attention should be paid to the following measurement. Can not meet the prescribed installation clearance, again according to the normal installation method gradually adjusted to the provision of installation clearance. A heating installation bearing requirements of shaft and bearing measurement again after isothermal installation clearance. B in front of the lock washer to install, installation clearance measurement again. C when hydraulic nut to lock nut, measuring installation clearance again. D after the filling pump hydraulic unloading, measuring installation clearance again. 2 self-aligning roller bearing axial position and adjust the improvement of the installation method of the spherical roller bearing inner ring A tapered shaft with lock nut, end cover and end cap or hydraulic nut bearing installation directly; B set to lock nut or hydraulic nut bearing installation directly; C withdrawal lining to paraphrase the shaft with a lock nut or hydraulic nut withdrawal sleeve installation to install the bearings. 2 the setting and implementation of axial clearance unit: ( 10 - 6) M / ℃ material coefficient of thermal expansion materials according to the shaft and bearing seat ( Shell) Material thermal expansion coefficient and working temperature, calculate the amount of axial expansion temperature, expansion amount, the difference between the two is due to the shaft and bearing seat work caused by temperature difference and thermal expansion coefficient of different materials of bearing inner ring and outer ring axial displacement volume. Due to thermal expansion force huge metal materials, has an irresistible, if spherical roller bearing installed axial pre-tightening force and axial thermal expansion of the superposition of axial force, will inevitably cause great bearing axial force and the damage, the axial force of the overlay even thrust bearing is unable to bear. To avoid huge spherical roller bearing axial force and the damage of the bearing when installation, must be in swimming end bearing cover and the bearing outer ring end face to set aside for axial thermal expansion between axial clearance, while ensuring the winding end bearing outside diameter and hole for small clearance fit, to ensure that the winding end bearing when the axial thermal expansion with the axial displacement ( The axial creep) 。 A shaft installation are fixed on the spherical roller bearing, bearing end cover on both ends of the shaft and the bearing outer ring should be set aside the axial gap between end face, on both ends of bearing outside diameter and a hole shall be the small clearance fit. Radial bearings after installation should reach installation clearance is not less than the residual clearance; Installed axial clearance is not less than the maximum thermal expansion amount of axis, and to ensure that when the axial displacement of the shaft rotating parts without interference with the rotating parts. Illustration: a set of spherical roller bearing with two sets of back-to-back configuration of tapered roller bearing combination, to avoid the spherical roller bearing axial load and advice back to back the configuration of the tapered roller bearing radial clearance is less than or equal to the installation clearance of spherical roller bearing, spherical roller bearing outside diameter and hole should be small clearance fit, the bearing and spherical roller bearing outer ring should be set aside the axial gap between end face.