What are the basics of split pillow block bearings?

Image courtesy of SKF

Split pillow blocks are versatile mounted assemblies designed for specific applications. Split pillow blocks accommodate a range of shaft sizes and higher loads. They are usually manufactured with heavy cast-iron housings, and have higher flexibility and more sealing and lubrication options.

Some basics of split pillow blocks are:

Are also made cast-steel or ductile iron
Horizontally split housing
Three styles of split pillow block bearings
- SAF (most popular)
  - SAF features a combination of five bearing types, four sealing options and two mounting methods.
- SAW
  - Accommodates a higher capacity
- SDAF
  - Used for applications that involve heavy or shock loads.
  - Used in steel mills, mineral processing plants and other environments

Soft pillow blocks also help meet unusual clearance or tolerance requirements, machine based ends have flat surface for jacking screws. This type of bearing commonly found in rolling mills, pulp and paper mills, conveyors and many other applications.

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