Overview
The Dodge P4B-S2-315RE bearing (model 070391) is a 4-bolt pillow block bearing designed for demanding industrial machinery applications. Built with cast iron construction and featuring a spherical roller bearing insert, this unit provides smooth, reliable operation under heavy radial and axial loads. The expansion mounting collar accommodates shaft growth and thermal expansion, making it suitable for extended-duty environments.
Key Features
- 4-bolt pillow block design for secure mounting on structural frames
- Spherical roller bearing insert for load distribution and reduced friction
- Cast iron housing rated for industrial-duty applications
- Concentric collar mount with expansion capability
- Relubricatable bearing for extended service intervals
- Precise bore diameter ensures reliable shaft fit and minimal runout
Technical Specifications
- Bore Diameter: 3-15/16″ (3.938″) | 100.025 mm
- Base-to-Center Height: 4-1/4″ (4.25″) | 108 mm
- Bearing Type: Spherical Roller
- Mounting Style: 4-Bolt Pillow Block
- Bolt Spacing (Minimum): 12-1/8″ (12.125″) | 307.975 mm
- Bolt Spacing (Maximum): 12-7/8″ (12.875″) | 327 mm
- Nominal Bolt Center-to-Center: 12-1/2″ (12.5″) | 317.5 mm
- Length Through Bore: 4-469″ | 113.513 mm
- Housing Material: Cast Iron
- Mount Type: Expansion
- Condition: New in Box
- Weight: 56.45 lbs
Typical Applications
The Dodge P4B-S2-315RE bearing excels in heavy-duty industrial environments where shaft loads and thermal cycling require robust, relubricatable bearing solutions. Common applications include:
- Industrial fan and blower assemblies
- Conveyor and material handling systems
- Pump and motor coupling assemblies
- Roll-fed machinery and mills
- Large rotating equipment with shaft diameters matching 3-15/16″ specifications
Compatibility & Replacements
Compatible With
- Industrial machinery with 4-bolt flange mounting surfaces
- Equipment designed for standard SAE/ANSI pillow block configurations
- Applications requiring 3-15/16″ (100 mm) bore diameter shafts
- Systems rated for expansion-type pillow block installation
Replaces / Drop-In Replacement For
- Earlier versions of Dodge P4B series 315 bore pillow blocks
- OEM-equivalent spherical roller pillow blocks with matching bore and bolt spacing
- Note: Verify mounting surface compatibility and bolt hole alignment before installation.
Works With
- Standard 4-bolt pillow block installation kits and foundation plates
- SAE flanged shaft couplings (bore 3-15/16″)
- Industrial-grade lubricants and greases for rolling element bearings
- Dodge bearing maintenance and alignment tools
