Bearing Units

What is a Pillow Ball Bearing Units?

Pillow Ball Bearing Unitss and regular bearings (Ball Bearings or Roller Bearings) are both used to support rotation, but they differ somewhat in application and structure. A pillow ball bearing units is a bearing mounted together with a housing, which is designed for easy installation on surfaces or structures such as base plates, steel frames, or machinery. (The term "pillow" refers to the housing or base that makes installation easier.)

Key Features of Pillow Ball Bearing Unitss

• Has a housing with bolt holes for mounting to a surface.
• The internal bearing can rotate around the shaft.
• Often includes built-in dust or grease seals.
• Some models have a fitting set screw or eccentric collar for easy shaft locking.

Comparison: Pillow Ball Bearing Unitss vs. Regular Bearings

Structure

Pillow Ball Bearing Units: Comes with a housing.

Regular Bearing (Ball/Roller Bearing): Does not have a housing.

Installation

Pillow Ball Bearing Units: Very easy, just bolt it to the base.

Regular Bearing (Ball/Roller Bearing): Requires a separate housing or more complex installation.

Usage

Pillow Ball Bearing Units: Supports shafts in a horizontal orientation.

Regular Bearing (Ball/Roller Bearing): Used within various rotating machine components.

Replacement/Maintenance

Pillow Ball Bearing Units: Easy to replace, the bearing itself can be changed.

Regular Bearing (Ball/Roller Bearing): Needs to be removed from other assemblies.

Industrial Applications

Pillow Ball Bearing Units: Popular in conveyor belts, general machinery.

Regular Bearing (Ball/Roller Bearing): Used in motors, gears, pumps, etc.

Recommendations for Choosing Pillow Ball Bearing Unitss

Selecting the right Pillow Ball Bearing Units for the job is very important as it directly affects the lifespan and efficiency of machinery such as conveyor belts, machine tools, or various rotating shaft systems.

• Shaft Size: Check the size of the shaft that the bearing needs to support, e.g., Ø20 mm, Ø25 mm, Ø30 mm, etc. Pillow ball bearing unitss have codes like UCP205, UCP206 which indicate the supported shaft size.
• Load Type: For heavy loads or impacts → it's recommended to use a roller bearing type instead of a ball bearing type. For light loads and low rotational speeds, regular ball bearings are sufficient.
• RPM (Rotations Per Minute): Check the rotational speed of the shaft that the bearing will support.
• Operating Environment: High dust/debris: Use models with good sealing, such as Triple Lip Seals or multi-layer dust seals. Moisture/water: Use water-resistant models or choose a Stainless Steel housing material. High temperature: Choose heat-resistant materials or use special grease.
• Housing Structure: Generally, UCP code is for horizontal base mounting. For vertical/wall mounting, use UCFL, UCFC, or UCT codes (depending on the mounting direction).