Insert Ball Bearing Installation and Disassembly Guide

The outer diameter surface of the outer ring of the outer spherical bearing is a spherical surface, which can be fitted into the corresponding concave spherical surface of the bearing seat to achieve alignment. In fact, it is a variant of deep groove ball bearing. The outer spherical bearing is mainly used to bear the combined radial and axial load, which is mainly radial load. It is generally not suitable to bear the axial load alone. Insert spherical ball bearings can be divided into three categories according to the way they cooperate with the shaft: spherical insert ball bearings with top wires, spherical insert ball bearings with tapered inserts, and spherical insert ball bearings with eccentric sleeves.

The size of axial clearance affects its normal operation

Outer spherical bearings are composed of inner rings, outer rings, steel balls, cages, sealing rings and other basic components. This type of bearing does not allow the shaft to tilt relative to the shell, and will generate additional axial force under any radial load. The axial clearance of the outer spherical bearing plays a key role in whether the bearing can work normally. If the axial clearance is too small, it will cause a high temperature rise; if the axial clearance is large, it is easy for the bearing to malfunction. Damage phenomenon. Therefore, when installing and operating bearings, attention must be paid to adjusting the axial clearance. If necessary, pre-interference installation can be performed to increase the rigidity of the bearing. So how to install the outer spherical bearing?

Installation method of outer spherical bearings

  1. Before installation, be sure to remove the fixed pin of the bearing jacket, polish the journal surface smooth and clean, free of dust, etc., and apply oil to the journal to prevent rust and lubricate it (allow the bearing to rotate slightly on the shaft).

  2. Apply lubricating oil to the matching surfaces of the bearing seat and the bearing, then install the bearing into the bearing seat, and then put the assembled bearing and bearing seat on the shaft. And push it to the location where you want to install it.

3． Do not tighten the bolts that fix the bearing seat first, so that the bearing sleeve can rotate in the bearing seat. Also install the bearing and seat at the other end of the same shaft, rotate the shaft a few times to allow the bearing to automatically find its position, and then tighten the bearing seat bolts.

4. Install eccentric sleeve. First put the eccentric sleeve on the eccentric step of the inner sleeve of the bearing and tighten it by hand in the direction of rotation of the shaft. Then insert or push the small iron rod into the countersunk hole on the eccentric sleeve. Use a hand hammer to hit the small iron rod in the direction of rotation of the axis. Make sure the eccentric sleeve is installed securely, and finally tighten the hexagon socket screws on the eccentric sleeve.

This is the installation method of the outer spherical bearing, so how to disassemble it if it is due to troubleshooting or regular maintenance?

How to disassemble outer spherical bearings

1. First use an Allen wrench to loosen the locking screw on the bearing eccentric sleeve, then insert a small iron rod into the countersunk hole on the top cover eccentric sleeve, and loosen the eccentric sleeve against the rotation direction of the shaft.

2. Loosen the bolts holding the bearing seat. Remove the bearing from the shaft along with the housing. Be careful before removing the bearing seat at one end of the shaft. The bearing seat bolt at the other end of the shaft should be loosened to avoid damage to the bearings at both ends.

Because outer spherical bearings are often used in machinery such as agriculture, transportation or construction systems, one of its main features is double-layer sealing, which can effectively prevent dust and other impurities from entering the interior during outdoor operations and protect the bearing environment. In recent years, there have been three Layer-sealed outer spherical bearing products are on the market, which are better dust-proof than double-layer sealed products and can more effectively extend the service life of the bearings. Go to Mobei.com to purchase high-quality bearings, with more than RMB 30 billion in stock and 200,000 models to choose from. Mobei.com, the most professional online bearing trading platform, makes bearing buying and selling easier and more convenient.