How to install tapered roller bearings?

wallpapers Products 2021-04-09
Installation of four-row tapered roller bearings (installation of roller bearings):
1. The fit between the inner ring of the four-row tapered roller bearing and the roll neck is generally with a gap. When installing, first put the bearing into the bearing box, and then put the bearing box into the journal.
The outer ring of the two- and four-row tapered roller bearing also adopts a dynamic fit with the bearing box hole. First, install the outer ring A into the bearing box. The words {HotTag} are printed on the outer ring, inner ring, and inner and outer spacers when they leave the factory. They must be installed in the bearing box in the order of the characters and symbols during installation. Can not be interchanged arbitrarily to prevent the change of bearing clearance.
3. After all the parts are installed in the bearing box, the inner ring, and the inner spacer ring, and the outer ring, and the outer spacer ring are axially abutted.
4. Measure the gap width between the end face of the outer ring and the bearing box cover to determine the thickness of the corresponding gasket.
Precautions for installing tapered roller bearings
Adjusting the axial clearance For the installation axial clearance of tapered roller bearings, it can be adjusted with the adjusting nut on the journal, adjusting washer and the thread in the bearing seat hole, or using pre-tensioned springs. The size of the axial clearance is related to the arrangement of the bearings, 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 loads and high speeds, when adjusting the clearance, the effect of temperature rise on the axial clearance must be considered, and the reduction in clearance caused by the temperature rise must be estimated, that is, the axial clearance It should be appropriately adjusted to be larger.
For low-speed and vibration-bearing bearings, clearance-free installation or pre-load installation should be adopted. Its purpose is to make the rollers and raceways of tapered roller bearings have good contact, and the load is evenly distributed, and to prevent the rollers and raceways from being damaged by vibration and impact. After adjustment, the size of the axial clearance is checked with a dial indicator.