Positioning Method of Bearing Ring

Time：2021.04.15  Source：Roller Bearings Suppliers

1. Positioning of bearing inner ring

When the bearing inner ring is installed on the shaft, the bearing position is generally fixed on one side by the shaft shoulder, while the other side is fixed with nuts, stop washers or spring ring. The dimensions of the contact part between the shaft shoulder and the axial fixing parts and the inner ring of the bearing can be determined according to the mounting dimensions of all kinds of bearings listed in the bearing size table.

(1) Nut positioning

In the case of high bearing speed and large axial load, the end face of the nut and bearing inner ring in contact should be perpendicular to the rotating centerline of the shaft. Otherwise, even if the nut is tightened, the installation position of the bearing and the normal working state of the bearing will be destroyed, and the rotating accuracy and service life of the bearing will be reduced. Especially when the match between the inner hole of the bearing and the shaft is loose, it is more necessary to strictly control it.

In order to prevent the nut from loosening in the process of rotation, appropriate technical measures should be taken to prevent loosening. Using the nut and the stop washer for positioning, place the inner key teeth of the stop washer into the keyway of the shaft and bend one of the teeth of the outer ring into the notch of the nut.Need WSBC 22310 E, click here to learn more.

(2) spring stop ring positioning

In the bearing axial load is not large, the speed is not high, the shaft is short and it is difficult to process into threads on the journal, which can be used for a rectangular section of the elastic ring positioning. This method is very convenient to load and unload, occupies a small position, simple manufacturing.

(3) positioning of thrust washer

In the shaft neck is short, the shaft neck is processed into the thread is difficult, the bearing speed is high, the axial load is large, the gasket positioning can be used, that is, the gasket is positioned with two or more screws on the shaft end face, and the stop gasket or the wire is screwed to death to prevent loosening.

(4) tighten the positioning of the set

The self-aligning roller bearings with low bearing speed, stable radial load and small axial load can be installed on the optical shaft by means of a tapered set sleeve. The setting nut and the stop washer are used for positioning. Use the friction force of the nut lock to position the bearing.

(5) bearing positioning with a taper in the inner hole

Bearing with a taper in the inner hole is installed on the tapered shaft. It is necessary to make the axial load check on the tight shaft and bearing. Therefore, attention should be paid to the direction of the taper in the inner hole when installing. If the bearing is located at the shaft end and is allowed to be threaded at the shaft end, it can be located directly with a nut.

If the bearing is not installed on the shaft end, and the shaft is not allowed to be processed into threads. In this case, the two halves of the combined threaded ring can be clamped into the groove of the shaft, and then the bearing is located with the nut.

(6) Special positioning

In some special cases, when the shoulder and fillet dimensions of the shaft cannot be determined according to the mounting dimensions listed in this catalog, the transition gasket can be used as the axial support.

2. Positioning of bearing outer ring

When the outer ring of the bearing is installed in the shell hole, the inner side of the outer shell-hole is generally occupied by the shoulder fixed bearing position, and the other side is positioned by the end cover, threaded ring and elastic ring of the hole. Click here to learn more about WSBC 22219-E1.

(1) end cover positioning

Endcap positioning is used for all types of centripetal bearings and angular contact bearings. It is used in the case of high bearing speed and large axial load. The end cover uses screws to position and press the outer ring of the bearing, and the end cover can also be made into a labyrinth-like sealing device.

(2) Thread ring positioning

When the bearing speed is high and the axial load is large, it is not suitable for the use of end cover positioning, the threaded ring can be used to locate the centripetal bearing and thrust bearing, which can be used to adjust the axial clearance of the bearing.

(3) Positioning of the elastic ring

This positioning method occupies a small axial position, convenient installation and disassembly, simple manufacturing, suitable for bearing a small axial load. An adjustment ring is added between the bearing and the spring to facilitate the adjustment of the axial position.

(4) Deep groove ball bearings with stop grooves on the outer ring of the bearing can be positioned by stop ring.

This type is used when the stop shoulder cannot be machined due to conditions in the housing hole, or when the contour size of the component must be reduced.

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