Overview
The Dodge 120476 is an SF-series QD (quick disconnect) bushing designed for power transmission applications requiring simple, tool-free shaft engagement and removal. Its 2-1/4-inch bore and 4° tapered design enable fast mounting without special tools, making it ideal for machinery requiring frequent coupling and decoupling. Dodge QD bushings are industry-standard components used in belt drive, chain drive, and flexible coupling applications across manufacturing, agriculture, and industrial equipment.
Key Features
- 4° Taper Design: Provides secure grip with minimal installation effort; easy on, easy off operation without tools
- Quick Disconnect Format: Eliminates need for keyway alignment tools; speeds up maintenance and equipment changes
- Finished Bore with Keyway: 1/2-inch × 1/4-inch keyway cuts, ready for standard shaft keys
- High Torque Capacity: 11,000 in-lbs rated torque
- Three-Bolt Flanged Design: 3.88-inch bolt circle diameter, 3/8-16 threaded cap screws, 360 in-lbs screw torque
- Durable Construction: Steel material throughout
Technical Specifications
Bushing Dimensions & Bore:
- Bushing Size: SF
- Bore Diameter: 2.2500 inches (57.15 mm)
- Bore Length (Through Bore): 2.0000 inches
- Flange Thickness: 0.5000 inch
- Flange Outside Diameter: 4.6250 inches
- Barrel Diameter: 3.13 inches
- Barrel Length: 1-1/2 inches
Fastening & Mounting:
- Keyway Size (Bushing): 1/2 × 1/4 inch
- Number of Bolt Holes: 3
- Bolt Circle Diameter: 3.88 inches
- Screw Thread Size: 3/8-16
- Screw Length: 2 inches
- Screw Torque (Installation): 360 in-lbs
- Mounting Type: Conventional or Reverse mounting
Performance & Materials:
- Torque Capacity: 11,000 in-lbs
- Material: Steel
- Maximum Hub OD (Steel): 5-1/2 inches
- Weight: 3.38 lbs
- Bore Type: Finished with Keyway
- Taper Angle: 4°
Typical Applications
- Belt drive and pulley assemblies requiring quick hub changes
- Chain sprocket mounting on equipment needing frequent adjustment or replacement
- Pump and motor coupling applications in manufacturing and processing
- Agricultural equipment and conveyor systems
- Industrial machinery where downtime for maintenance must be minimized
- Flexible couplings in production lines
Compatibility & Replacements
Compatible With
- Dodge SF-series power transmission components
- Standard tapered sheaves and sprocket hubs designed for QD bushing mounting
- 2-1/4-inch shaft applications with 1/2 × 1/4-inch keyways
- Flexible couplings and flexible drives rated for 11,000 in-lbs torque
Replaces / Drop-In Replacement For
- Directly replaces existing Dodge 120476 bushings in existing installations
- Compatible with other SF-series QD bushings in the same size family when reboring is performed
Works With
- Standard metric and imperial shaft keys (1/2 × 1/4-inch)
- Conventional and reverse-mounting hub configurations
- 3/8-16 cap screws and standard industrial fastening systems
- Any sheave, sprocket, or coupling hub sized for SF QD bushing bore of 2-1/4 inches
