Overview
The PBC Linear PN08D pillow block bearing is a precision-engineered, self-aligning linear bearing assembly designed for mounting directly to machinery frames and support structures. Featuring a 1/2″ precision ID with an open-shell design, this pillow block delivers oil-free, maintenance-free linear motion in demanding industrial applications. The inserted Simplicity® plain bearing housed in an aluminum alloy housing makes the PN08D an ideal choice for systems requiring low-cost, low-maintenance bearing solutions.
Key Features
- Self-Lubricating Technology: FrelonGOLD® liner provides oil-free, maintenance-free motion in harsh conditions such as extreme temperatures, dirt, contamination, vibration, and shock loads
- Self-Aligning Design: The inserted bearing can tilt slightly within the housing to compensate for up to 1/2° of misalignment in all directions, helping to reduce binding from slight shaft deflection or misalignment between parallel shafts
- Direct Mounting: Four pre-positioned mounting holes allow direct fastening to machinery or support structures
- Extreme Temperature Range: FrelonGOLD® liners provide vibration dampening and reliable performance from -400°F to +400°F (-240°C to +204°C)
- Low-Friction, Quiet Operation: Vibration-dampening design ensures smooth linear motion with reduced noise
- Aluminum Alloy Housing: Lightweight, corrosion-resistant construction for industrial durability
Technical Specifications
The PN08D delivers precision performance with measurable, proven specifications:
- Inner Diameter (ID): 1/2″ (0.500″) precision ID
- Bore Type: Precision running clearance (0.0005″ per side)
- Bearing Style: Open-shell, self-aligning plain linear bearing
- Liner Material: Self-lubricating FrelonGOLD®
- Housing Material: Aluminum alloy with anodized finish
- Temperature Rating: -400°F to +400°F (-240°C to +204°C)
- Mounting: Four pre-positioned holes for direct fastening
- Self-Alignment Capability: Up to 1/2° in all directions
- Lubrication: Oil-free, maintenance-free operation
Typical Applications
The PBC Linear PN08D pillow block bearing is ideal for a wide range of industrial machinery and automation applications, including:
- Machine tool linear motion systems
- Industrial printing and textile equipment
- Conveyor systems and material handling
- Packaging machinery with linear shafts
- Environmental control systems requiring extreme temperature tolerance
- Contaminated or washdown environments where sealed bearings are impractical
- Any application requiring low-maintenance, self-aligning linear support
Compatibility & Replacements
Compatible With
- 1/2″ nominal round steel shafts (precision ID: 0.5000″ ± 0.0005″)
- PBC Linear Simplicity® bearing ecosystem
- Direct mounting to aluminum and steel frames using provided holes
- Standard industrial machinery requiring 1/2″ bore pillow block support
- Applications operating across extreme temperature ranges (-400°F to +400°F)
Replaces / Drop-In Replacement For
- Industry-standard 1/2″ open-shell pillow block bearings (verify housing dimensions with your system integrator)
- Legacy self-aligning pillow block models requiring similar bore size and mounting pattern
Works With
- PBC Linear Simplicity® plain linear bearing product line
- Any application requiring a 1/2″ precision-bore self-aligning pillow block
- Systems designed for oil-free, maintenance-free operation
- High-contamination or extreme-temperature industrial environments


















