PDN Series Precision Two-Bearing Plummer Block Housings (Overhung Shaft Applications, 200 & 300 Series)

PDN Series Precision Two-Bearing Plummer Block Housings (Overhung Shaft Applications, 200 & 300 Series)

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PDN Series Precision Two-Bearing Plummer Block Housings (Overhung Shaft Applications, 200 & 300 Series)
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Product Description

The JAYCO PDN Series Plummer Block Housings are extra heavy-duty, precision-machined, two-bearing housings designed specifically for overhung shaft applications in high-speed rotating equipment. Engineered for maximum alignment accuracy and vibration control, the PDN Series is widely used in industrial fans, blowers, pumps, transmission systems, and other dynamically loaded machinery.

These housings are built to deliver smooth, vibration-free operation, improved rotational stability, and extended bearing life, making them highly suitable for high-speed and precision-critical applications.

Precision Engineering & Design Advantage

Dual Bearing Integrated Housing

  • Two bearing seats are machined in a single setting for perfect concentricity
  • Ensures precise coaxial alignment of both bearings
  • Minimizes vibration, noise, and uneven loading
  • Enhances overall system stability under dynamic conditions

This single-setting machining process is the key advantage of the PDN design, especially for overhung shaft arrangements where imbalance can cause severe operational issues.

Technical Specifications

  • Series Type: Extra Heavy Duty Two-Bearing Housing
  • Shaft Diameter Range: 25 mm to 125 mm
  • Material: Graded Cast Iron FG 260 (IS 210)
  • Equivalent to ISO/R 185-1961 Grade 25

The material provides excellent vibration damping, structural rigidity, and long operational life in high-speed rotating systems.

Bearing Arrangement & Load Handling

Dual Bearing Configuration

  • Bearings installed at both ends of the housing
  • Designed for overhung shaft support systems
  • Capable of handling radial loads and axial loads in both directions

Compatible Bearing Types

  • Deep Groove Ball Bearings (DGBB)
  • Angular Contact Ball Bearings (ACBB)
  • Cylindrical Roller Bearings (CRB)

This allows flexible configuration based on speed, load, and application requirements.

Sealing System

  • Felt seal or V-ring seal options available
  • Provides protection against dust, dirt, and light moisture
  • Enhances bearing life and lubrication retention

Lubrication Flexibility

The PDN Series supports multiple lubrication methods depending on application needs:

  • Grease lubrication
  • Oil lubrication
  • Oil bath / circulating oil systems

This flexibility ensures suitability across a wide range of speeds and operating conditions.

Ready-to-Install Assembly

JAYCO PDN housings are supplied as fully assembled units, including:

  • Housing body
  • Seals and O-rings
  • Flinger rings
  • Spacer sleeves (as applicable)
  • Snap rings and spring washers
  • Grease nipples and cover components

This reduces installation time and ensures consistent factory-assembled quality.

Typical Applications

The PDN Series is ideal for overhung shaft systems where precision and balance are critical, such as:

  • Industrial fans and blowers
  • Centrifugal pumps
  • Circular saw machines
  • Transmission and drive systems
  • General rotating machinery

Optional Configurations

To suit different load and speed conditions, JAYCO also offers:

  • PDP Configuration – Mixed roller and angular contact bearing setup
  • PDR Configuration – Optimized for higher radial load applications

Selection is customized based on load direction, speed, overhung mass, and operating severity.

Manufactured in India with Precision Engineering Standards

JAYCO PDN Series Plummer Blocks are designed and manufactured in India using advanced CNC, VMC, and HMC machining technology. With strict control over concentricity, tolerances, and assembly quality, these housings are trusted in vibration-sensitive and high-speed industrial applications worldwide.

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