Pillow Block Bearings: The Workhorses of Bearing Housings

Pillow block bearings, also known as Plummer blocks, are a popular and versatile type of mounted bearing unit. They combine a rolling element bearing (such as a ball bearing, roller bearing, etc.) with a supporting housing. This pre-assembled unit simplifies mounting and installation, making them ideal for various applications requiring efficient and cost-effective bearing solutions.

Design and Functionality:

• The bearing housing is typically made from cast iron or cast steel, offering durability and resistance to harsh environments.
• The housing design incorporates bolt holes or a flange to facilitate easy attachment to a machine frame or other supporting structure.
• The inner part of the housing securely holds the selected rolling element bearing, allowing for smooth rotation and accommodation of loads.
• Some pillow block bearings may include seals to protect the internal bearing from dust, moisture, or contaminants.

Types of Pillow Block Bearings:

Pillow block bearings come in various configurations to suit different application needs. Here are some common types:

• Ball bearing pillow blocks: Provide a good balance of load capacity, speed capability, low friction, and quiet operation.
• Roller bearing pillow blocks: Offer exceptional high load capacity for applications with heavy loads. Examples include tapered roller and cylindrical roller pillow blocks.
• Composite pillow blocks: Utilize polymer housing for corrosion resistance and weight reduction.
• Take-up pillow blocks: Feature an adjustable slot in the housing to allow for shaft alignment during installation.

Benefits of Pillow Block Bearings:

• Convenience: Pre-assembled design simplifies installation and saves time.
• Versatility: Available in various configurations to suit diverse load, speed, and environmental requirements.
• Cost-Effectiveness: Offer an affordable solution compared to sourcing bearings and housings separately.
• Alignment: Some designs incorporate features to aid in proper shaft alignment, crucial for optimal bearing performance.

Applications:

Pillow block bearings find widespread use in numerous industries due to their versatility and ease of use. Here are some examples:

• Material handling systems: Conveyors, fans, blowers
• Construction machinery: Crushers, mixers, bucket wheels
• Agricultural equipment: Pulleys, driveshaft’s, processing machinery
• Food and beverage processing: Mixers, bottling lines, packaging equipment
• Textile machinery: Spinning machines, looms, knitting machines

At DDK BEARINGS, we are committed to providing high-quality bearing solutions backed by exceptional customer service. Contact us today to discuss your bearing requirements and experience the difference.