Spherical Bearings

The outer spherical ball bearing is actually a variant of the deep groove ball bearing, which is characterized in that the outer diameter surface of the outer ring is spherical and can be fitted into the corresponding concave spherical surface of the bearing seat to play a self-aligning role. Radial spherical bearings are mainly used to withstand radial and axial combined loads, which are mainly radial loads. Generally, it is not suitable to bear axial loads alone.

Outer spherical ball bearings with seat:

The spherical bearing with a seat is a bearing unit that combines a rolling bearing with a bearing seat. Most outer spherical bearings have a spherical outer diameter and are mounted together with a bearing housing with a spherical inner hole. They have various structural forms, good versatility and interchangeability.

At the same time, this type of bearing also has a certain degree of self-alignment in the design and is easy to install. It has a double structure sealing device and can work in harsh environments. The bearing housing is generally formed by casting. Commonly used seats are vertical seat (P), square seat (F), boss square seat (FS), boss circular seat (FC), diamond seat (FL), ring seat (C), slider seat, etc. ( T).

The outer spherical bearing with a seat is divided into a bearing core and a bearing seat. In the name, the bearing core is added to the bearing seat. For example, the outer spherical bearing with set screw UC205 and the vertical seat are called UCP205. Due to the strong interchangeability of the outer spherical bearing with a bearing, the bearing core can be freely assembled in bearing housings of different specifications of the same specification.

The 390000 series outer spherical bearing is used to fix the inner ring of the bearing and the shaft through an eccentric sleeve, and the hexagonal screws on the eccentric sleeve are used for fastening. During maintenance, many operators will not

When disassembling this type of bearing, it is necessary to introduce the technical points and precautions for disassembling the 390000 series spherical bearings:

Disassembly

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

2. Loosen the bolts that secure the bearing block. Remove the bearing together with the bearing housing from the shaft. Note before removing the bearing seat at one end of the shaft. The bearing housing bolts at the other end of the shaft should be loosened to avoid damage to the bearings at both ends.

installation

1. Before installing the bearing on the shaft, you must first remove the fixing pin of the bearing jacket, and at the same time, polish the surface of the journal to smooth and clean, and apply oil to prevent rust and lubrication at the journal (allowing the bearing to rotate slightly on the shaft).

2. Lubricate the bearing seat and bearing mating surface, and install the bearing in the bearing seat. Then put the assembled bearing on the shaft together with the bearing seat. Push to the required position for installation.

3． Do not tighten the bolts that fix the bearing block first, and make the bearing jacket rotate in the bearing block. At the same time, install the bearing and seat on the other end of the same shaft, rotate the shaft a few times, and let the bearing automatically correct the position. Then tighten the bearing seat bolts.

4． Install an eccentric sleeve. First, eccentric sleeve is placed on the eccentric step of the bearing inner sleeve, and tightened by hand in the direction of shaft rotation. Then insert the small iron rod or press against the counterbore on the eccentric sleeve. Use the hammer to tap the small iron rod in the rotation direction of the shaft. Make the eccentric sleeve securely installed, and finally tighten the hex screw on the eccentric sleeve.