32210Tapered roller bearings

32210Tapered roller bearings Adjusting axial clearance For the installation of tapered roller bearing axial clearance can be adjusted by adjusting the nut on the journal, adjusting the thread in the gasket and the bearing seat hole, or using a pre-loaded spring. The size of the axial clearance is related to the arrangement of the bearing installation, the distance between the bearings, the material of the shaft and the bearing seat, and can be determined according to the working conditions.
For tapered roller bearings with high load and high speed, when adjusting the clearance, the effect of temperature rise on the axial clearance must be considered, and the reduction of the clearance caused by temperature rise must be estimated, that is, the axial clearance should be appropriately adjusted to a larger extent.
For bearings with low speed and subjected to vibration, no clearance installation should be adopted, or pre-load installation should be applied. The purpose is to make the roller and raceway of the tapered roller bearing have good contact, the load is evenly distributed, and the roller and raceway are prevented from being damaged by vibration impact. After adjustment, the size of axial clearance is tested with a dial gauge.
Installation of four row tapered roller bearings (installation of roller bearings) :
The inner ring of a four-row tapered roller bearing and the roller neck are generally with a gap, and the bearing is first loaded into the bearing box during installation, and then the bearing box is loaded into the journal.
Two, four row tapered roller bearing outer ring and bearing box hole also adopt dynamic fit, first put the outer ring A into the bearing box. At the factory, the outer ring, the inner ring and the inner and outer spacer are printed with the word {HotTag} symbol, and must be installed in the bearing box according to the sequence of character symbols. Not interchangeable to prevent the change of bearing clearance.
Third, after all parts are loaded into the bearing box, the inner ring and the inner spacer ring, the outer ring and the outer spacer ring are axially tight.
Fourth, measure the width of the gap between the outer ring end face and the bearing box cover plate to determine the thickness of the corresponding sealing gasket.