What is a pillow block bearing?
The pillow block bearing is used in light load applications. The plummer block may consist of spherical roller bearings or self-aligning ball bearings.
Parts of pillow block bearingA simple pillow block bearing consists of the following parts,
BearingThis is the main body part which performs the basic function of supporting the rotary shaft. It may be a ball or roller type bearing. The bearing material generally used are Steel, stainless steel, sintered metals, graphite metal & Some type of plastic.
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Plummer block unitIt is made with high strength cast iron or cast steel.
SealIt is present to seal the lubricant. It basically prevents leakage of lubricant outside of the bearing.
Oil plugsTo lubricate the bearing this hole is used.
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Mounting HolesThese are usually slotted type holes used to mount the unit. This allows for easy positioning during the installation.
DesignThe bore diameter is machined with H8 tolerance. When designing shaft one should refer to the manufacturer's catalog, for example, NTN pillow block bearings.
We can get variation in bore size, bearing or block material and in similar other things.