Plummer Block Bearing

Plummer Block
A Plummer block is a type of mounted bearing designed to provide support and secure positioning for a rotating shaft. The term "plummer block" is often used in the context of larger, heavier-duty applications. The bearing unit consists of a spherical roller or ball bearing and a housing, usually made of cast iron or steel. The housing has a mounting surface parallel to the shaft axis and is typically in a block or box-like shape, offering stability and support. Plummer block bearings are commonly used in heavy industries such as mining, steel, and construction where robustness and load-carrying capacity are critical. The housing often incorporates features like bolt holes and end covers for sealing and protection. These bearings are known for their ability to handle high loads, accommodate misalignment, and simplify the mounting process. The term "plummer block" is synonymous with "pillow block" in many contexts, and the terms are often used interchangeably.

Features and benefits:
  • Easy Installation and Replacement
  • Robust Load Capacity
  • Durable Housing Material
  • Several sealing opinions including v- ring seal, felt seal, double lip seal, labyrinth seal, and taconite seal
Display in:

Mining & Construction
Pumps & Compressors
Papermaking Machinery
Industrial Blower
Steel Industry
Food Processing Machinery


Q: What is the difference between a pillow block and a plummer block bearing?

The terms are often used interchangeably, but a pillow block bearing typically refers to a lighter-duty bearing unit, while a plummer block bearing is associated with heavier-duty applications.

Q: Can Plummer block bearings accommodate misalignment?

Yes, Plummer block bearings can accommodate a certain degree of misalignment between the shaft and the housing. The design allows for some flexibility to reduce the risk of premature wear due to misalignment.

Q: Can plummer block bearings be used in corrosive environments?

Yes, certain models with appropriate materials and coatings can be used in corrosive environments, such as those found in chemical processing plants.