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Glossary
Components

Bearing Housing

A cast iron, steel, or stainless steel enclosure that supports and protects a bearing while providing a mounting interface to the machine frame.

What Is a Bearing Housing?

A bearing housing is a mechanical enclosure that holds a bearing in position, protects it from contaminants, retains lubricant, and provides a sturdy mounting interface to the machine frame or foundation. Housings are typically made from cast iron (GG25), ductile iron, cast steel, or stainless steel.

Housing Types

Pillow blocks (UCP): Bolt-down pedestal mount. Flanged units (UCF): Bolt-on flange mount. Take-up units (UCT): Adjustable position for belt tensioning. Split housings (SNL): Two-piece for easy bearing replacement without dismounting the shaft. See the Pillow Block Installation Guide and explore our Bearings & Housings catalogue.

Frequently Asked Questions

What is the difference between a bearing housing and a pillow block?

A pillow block is a specific type of bearing housing with an integrated base for bolt-down mounting. The term 'bearing housing' is broader and includes split housings (SNL), flanged units (UCF), take-up units (UCT), and cartridge units. Plummer block is another term for a split pedestal bearing housing.

bearing housingplummer blockbearing unitSNL housingsplit housingcast iron housing
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