The pillow blocks are composed of the outer spherical ball bearings with double-sealing and the casting (or steel plate by punching) bearing base.

The inside structure of the outer spherical ball bearing is the same as the one of deep groove ball bearing.

However, the outer ring for this kind of bearing has the outer surface of sectional balls, which fit the concave surface of the bearing base for self-adjustment.

Generally speaking, for this kind of bearing, there are clearance between the bearing inside bore and the shaft, It is possible to use the center, the eccentric fixer, fastening fixture to fix it onto the shaft, and then they will rotate with the shaft. The pillow blocks are compact in structure, convenient for mounting and dismounting.

They are suitable for simple support. They are often used in mining, metallurgical, agriculture, chemical, transmission machinery and other industries.

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