The clearance adjustment of double row tapered roller bearings is achieved by changing the axial relative position of the inner and outer rings. Common methods include increasing or decreasing the thickness of the gasket, rotating the adjustment screw or nut, etc. When adjusting, the normal working clearance specified by the bearing manufacturer should be taken as the reference, and factors such as load, speed, and temperature should be considered.
There are three specific methods:
Adjust the perpendicularity: use a horizontal foam adjuster to measure and adjust the height difference between the two end faces of the bearing pedestal, and reduce the axial clearance by tilting and rotating the bearing pedestal.
Adjusting the inner cone: Install an adjuster in the bearing seat and reduce the axial clearance by lifting and turning the adjusting ring on the inner cone.
.Adjusting shims: By replacing the shims on the upper and lower sides of the compression plate on the inner side of the bearing seat, different thicknesses of shims can be selected to achieve the adjustment purpose.
. After adjustment, be sure to use a feeler gauge to check if the gap meets the requirements. When the wear of the raceway and rolling elements increases the clearance to twice the specified clearance of the new bearing, the bearing needs to be readjusted or replaced. For more professional applications, reference can be made to industry standards such as "Clearance and Adjustment Methods for Double row and Four row Conical Roller Bearings of Rolling Bearings" (JB/T 8236-2010).