Overview
The Sealmaster SF-27 set screw bearing is a flange-mount ball bearing unit engineered for reliable shaft support in industrial machinery. This 4-bolt flange-mount design with set screw locking provides direct load positioning on mounted shafts up to 1-11/16″ diameter. The SF-27 is widely used in mechanical power transmission, conveyor systems, and industrial automation applications requiring standard-duty performance.
Key Features
- 4-bolt flange mount design for flush mounting with machined bases
- Set screw locking mechanism for secure, non-expansion shaft retention
- 1-11/16″ (1.688″) bore diameter accommodates standard industrial shafts
- Cast iron housing provides durability and thermal stability
- Felt labyrinth seal protects rolling elements from contamination
- Sealmaster exclusive lock pin and dimple for direct lubrication and anti-rotation
- Wide inner race design allows 360° grease circulation for superior lubrication
Technical Specifications
- Bore Diameter: 1-11/16″ (1.688 in)
- Housing Type: Cast Iron
- Flange Mount: 4-bolt configuration
- Bolt Hole Center-to-Center: 4 3/8″
- Bolt Size: 9/16″
- Shaft Locking: Set Screw
- Seal Type: Felt Labyrinth
- Bearing Type: Ball Bearing Insert, Chrome Steel
- Load Rating (Dynamic): 7,889 lbs
- Load Rating (Static): 5,216 lbs
- Operating Temperature Range: -20°F to 220°F
- Centerline to Front Face: 1.1875″
- Series: SF / MSF (Sealmaster Gold Line)
Typical Applications
- Mechanical power transmission equipment and shaft support
- Conveyor and material handling systems
- Industrial pump and fan bearing mounts
- Agricultural machinery and equipment
- Standard-duty industrial automation and motion control systems
- OEM equipment requiring compact flange-mount bearing units
Compatibility & Replacements
Compatible With
- Dodge mechanical power transmission equipment
- Standard industrial shaft diameters: 1.688″ nominal
- Four-bolt square flange mounting patterns (SAE standard)
- Baldor motors and similar industrial drive equipment
- Tigear-2 reducers and gearbox output shafts
Replaces / Drop-In Replacement For
- Sealmaster SF-27 (Gold Line 4-bolt flange)
- Sealmaster MSF-27 (equivalent mounting footprint)
- SKU 700452 (Sealmaster cross-reference)
Works With
- Standard ISO 286 shaft sizing (1-11/16″ nominal bore)
- SAE flange mount bolt patterns and bases
- Industrial grease and lubrication systems compatible with felt seals
- Conventional mechanical power transmission systems without electronic feedback
