Pillow block bearing

[1] The block is mounted to a foundation, and a shaft is inserted, allowing the inner part of the bearing/shaft to rotate.

[1] The inside of the bearing is typically 0.025 millimetres (0.001 in) larger diameter than the shaft to ensure a tight fit.

[1] Various sealing arrangements may be provided to prevent dust and other contaminants from entering the housing.

Thus, the housing provides a clean environment for the environmentally sensitive bearing to rotate free from contaminants while retaining lubrication, either oil or grease, increasing its performance and duty cycle.

The bearing element may be manufactured from 52100 chromium steel alloy (the most common), stainless steel, plastic, or bushing materials such as SAE660 cast bronze, SAE841 oil impregnated sintered bronze, or synthetic materials.