pillow block bearing types

Mounted bearings (also called Pillow Block Bearings or Bearing Units) combine a bearing insert with a housing unit. They are widely used in agricultural machinery, conveyors, fans, mining equipment, food machinery, and many other industrial applications.

1. Pillow Block Type

The most common type, mounted on a flat surface with bolt holes at the base.

Common Models

• UCP
• UCPA
• UCPH

Features

• Easy installation
• High load capacity
• Widely used in industry

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2. Two-Bolt Flange Type (Diamond Flange)

Designed with two mounting holes for side-wall installation.

Common Models

• UCFL
• UCFA

Features

• Space-saving design
• Suitable for light-duty equipment

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3. Four-Bolt Flange Type (Square Flange)

Features a square housing with four mounting holes for stronger fixing.

Common Models

• UCF
• UCFS

Features

• Stable installation
• Suitable for heavy-duty applications

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4. Round Flange Type

Designed with a circular flange housing.

Common Models

• UCFC

Features

• Better alignment accuracy
• Often used in precision equipment

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5. Take-Up Unit Type

Allows adjustable positioning for belt tension control.

Common Models

• UCT

Features

• Adjustable movement
• Commonly used in conveyor systems

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6. Pressed Steel Housing Type

Uses stamped steel housings instead of cast iron.

Common Models

• SBPP
• SBF

Features

• Lightweight
• Cost-effective
• Suitable for light-load applications

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Classification by Housing Material

Cast Iron Housing

• Most common type
• Strong and durable

Stainless Steel Housing

• Corrosion resistant
• Widely used in food processing industries

Thermoplastic Housing

• Rust-proof
• Suitable for wet or corrosive environments

Classification by Bearing Structure

Insert Ball Bearing Units

The most widely used type with self-aligning capability.

Spherical Roller Bearing Units

Designed for heavy loads and shock conditions.

Deep Groove Ball Bearing Units

Suitable for high-speed and light-load applications.