Price: Request for a Quote
Description
A pillow block bearing, also known as a Plummer block, is a pedestal that, with the aid of different accessories and appropriate bearings, supports a rotating shaft. The mounting block that contains the bearing is all that makes up the assembly. The inner portion of the bearing or shaft can rotate once the block is fixed to a foundation and a shaft is installed. To guarantee a snug fit, the internal diameter of the bearing is usually 0.025 millimeters (0.001 in) greater than the shaft. Shafts are often secured with set screws, locking collars, or set collars. A pillow block’s housing is usually composed of cast iron or cast steel.
Bearing Specifications
When choosing pillow block bearings, considerations such as:
- Shaft diameter: The diameter and the bearing unit’s proper bore dimensions must match. Pillow block bearings that are the right size glide onto the shaft with ease and settle into place, ready for the locking mechanism to tighten.
- Shaft height: The distance between the base of a pillow block bearing and the shaft’s center is used to calculate the shaft height, also known as the backing height.
- Shaft size: The largest diameter of the shaft or the mounted bearing’s bore size.
- Maximum speed: The highest shaft speed at which the bearing is intended to function.
- Maximum load: The maximum allowable radial load for bearings that can only handle radial loads, or the dynamic load capacity for bearings capable of combining radial and thrust loads. Shaft speed affects load rating in several ways.
