Overview
The Martin 3535 taper-lock bushing with 3-1/4″ bore is a standard split bushing designed for power transmission applications. This cast iron bushing uses an 8° taper wedge mechanism and mounting screws to create a secure, high-clamping-force connection on sprockets, sheaves, and pulleys. The finished bore design eliminates the need for bore finishing on-site, reducing installation time and ensuring repeatability across multiple installations.
Key Features
- 8° tapered design for reliable wedging action and positive shaft clamping
- Non-flanged, split construction allows for easy installation and removal without disturbing adjacent components
- Cast iron Class 30 material provides durability in demanding industrial environments
- Three-bolt hole pattern (4.83″ bolt circle) for secure attachment to sprockets and pulleys
- Flush-mounting design with no protruding parts
- 3/4″ × 3/8″ keyway provides positive drive alignment
Technical Specifications
- Bore Diameter: 3-1/4″ (3.250″)
- Barrel Diameter: 5″
- Hub Diameter Range: 7 to 7-3/4″
- Taper Angle: 8 degrees
- Overall Length: 3-1/2″
- Bolt Circle Diameter: 4.83″
- Bolt Holes: 3
- Fastener: 1/2″ × 1-1/2″ screw
- Keyway: 3/4″ × 3/8″
- Torque Rating: 44,800 in-lb
- Material: Cast Iron Class 30
Typical Applications
This taper-lock bushing is commonly used in:
- Sprocket mounting for chain drive systems
- Pulley mounting for belt drive systems
- Sheave mounting in industrial equipment
- Conveyor and material handling systems
- General power transmission assemblies where controlled shaft-to-hub clamping is required
Compatibility & Replacements
Compatible With
- Martin and standard 3535-series taper bushed sprockets, pulleys, and sheaves
- Standard 8° taper bushed hubs with 5″ barrel diameter
- Power transmission systems using 1/2″ fasteners
- Industrial drive chains and belt systems with 3535 bushed components
Replaces / Drop-In Replacement For
- Dodge 3535X3 1/4KW
- Precision Pulley & Idler 3535X3 1/4KW
- TB Woods TL3535314
- Tsubaki and other interchangeable 3535 3-1/4″ taper-lock bushings
Works With
- All standard 3535-series taper bushed sprockets from Martin and OEM equivalents
- Chain and belt drive assemblies requiring standard 8° taper bushings
- Industrial equipment designed for 3535 bushing size and 3-1/4″ bore diameter
