Correct installation method for bearings with locking sleeves?

When installing using a fastening sleeve, the lock nut locks the bearing onto the sleeve, and a spacer ring must be inserted between the shaft shoulder and the inner ring at the other end.

If it is an optical shaft (non shaft beam), it may not be used according to the contact surface, and the axial bearing capacity of the bearing is determined by the friction between the shaft and the cone sleeve.

When installing using a fastening sleeve, the lock nut locks the bearing onto the sleeve, and a spacer ring must be inserted between the shaft shoulder and the inner ring at the other end. If it is an optical shaft (without shaft blind) and no contact surface is available, the axial bearing capacity of the bearing is determined by the friction between the shaft and the tapered sleeve.

Operating principle of bearing adapter sleeve:

The original intention of the taper design of the bearing collar is to facilitate installation and disassembly, improve efficiency, and reduce mechanical maintenance costs. Generally speaking, for ease of installation, use a fastening sleeve, and for ease of disassembly, use a release sleeve. In short, the fastening sleeve is an accessory of the inner tapered hole bearing, which can ensure the stable operation of the supporting bearing. The use of the withdrawal sleeve and the fastening sleeve can achieve the effect of adjusting the internal clearance.

(1) Bearing sleeves are widely used in places with light loads that are easy to disassemble and assemble. Many bearings encounter difficulties in assembly and disassembly, especially when the assembly of bearings inside the box is limited by conditions. The application of bearing sleeves solves the difficulties in assembly and disassembly.

(2) Due to the adjustable tightness of the bearing sleeve, the machining accuracy of many boxes is relaxed, greatly improving the machining efficiency of the box.

(3) The press fit sleeve overcomes the axial movement of the bearing through friction between the shaft and the inner ring. Therefore, bearing sleeves have been widely used, but there are also some shortcomings, as the accuracy of the bearing sleeve directly affects the radial phase runout of the shaft.

Difference between tightening sleeve and pushing sleeve

Set sleeve thread at small end

The thread of the ejector sleeve is at the large end

The disassembly of the fastening sleeve is not very convenient, only suitable for locking

The pusher sleeve is easy to remove, requiring only nuts to remove.

Tight and affordable sets are available on the market

There are few people who offload applications, and most of them are customized, while a few cannot be customized.

The locking sleeve can fix the bearing at any position on the optical axis

The ejector sleeve requires a shoulder to block the bearing limit

Application.

The fixing sleeve and the pushing sleeve are mainly used to adjust the radial clearance after installation. It is difficult to say where to use it, but in situations where the rigidity requirement is high, small gaps or even negative gaps must be used. At this point, two types of accessories need to be used for adjustment.