Pillow Block Bearings
Introduction
The pillow block bearing is actually a variant of the deep groove ball bearing. Its outer ring outer diameter surface is spherical, which can be matched into the corresponding concave spherical bearing seat to play the role of aligning. The outer spherical bearing is mainly used to bear the combined radial and axial loads which are mainly radial loads. Generally, it is not suitable to bear the axial loads alone.
Feature
Its outer diameter surface is spherical, which can be fitted into the corresponding concave spherical surface of the bearing seat to play a role of alignment. Pillow block bearings are mainly used to bear radial and axial combined loads, which are mainly radial loads. Generally, it is not suitable to bear axial loads alone.
Advantages
1.Low friction resistance, low power consumption, high mechanical efficiency, easy to start; High precision, large load, small wear, long service life.
2.Standardized size, interchangeability, easy installation and disassembly, easy maintenance; Compact structure, light weight, smaller axial size.
3.Some bearings have the performance of self-aligning; Suitable for mass production, stable and reliable quality, high production efficiency.
4. Transmission friction torque is much lower than fluid dynamic pressure bearing, so friction temperature rise and power consumption are lower; The starting friction moment is only slightly higher than the rotational friction moment.
5. The sensitivity of bearing deformation to load changes is less than that of hydrodynamic bearing.
6. Axial size is smaller than that of traditional hydrodynamic bearing; It can withstand both radial and thrust combined loads.
7. Unique design can achieve excellent performance over a wide range of load-to-speed; Bearing performance is relatively insensitive to fluctuations in load, speed and operating speed.
Defects of pillow block bearing with seat
1. Loud noise.Because of the high speed of outer spherical bearing with seat, it will make a great noise when working.
2. The structure of bearing housing is complex.In order to meet the use of different types of bearings, the design of bearing housing is relatively complex, and the bearing housing also increases the production cost of the product, resulting in the overall cost of outer spherical bearing with seat is higher.
3. Even if the bearings are well lubricated, properly installed, dust-proof and moisture-proof, and operate normally, they will eventually fail due to the fatigue of the rolling contact surface.
Application
Pillow block bearing are often used in mining, metallurgy, agriculture, chemical industry, textile, printing and dyeing, conveying machinery, etc.
