Overview
The Martin 3020 2 15/16 taper bushing is an industry-standard taper lock bushing engineered for reliable, secure attachment of power transmission components. This taper lock bushing features a 2-15/16 inch bore with a 3/4 x 3/8 inch keyway and is manufactured from steel material. Tapered non-flanged split bushings utilize screws to tighten on the shaft, providing excellent clamping force over standard bored-to-size product that only utilizes a keyway and setscrew to lock onto the shaft.
Key Features
- Flush mounted for reduced mounting width with a split taper for tight clamp to shafts
- Made of sintered powder steel for greater strength and wear resistance than plain carbon steel
- Keyed to the shaft to prevent shaft rotation in the bushing and interchangeable with taper bushings from various manufacturers
- 2.938 inch finished bore size with 3/4 x 1/4 inch bushing key seat
- Two-bolt installation with socket set screw fastening
- Designed for sprockets, sheaves, pulleys, and couplings
Technical Specifications
Complete specification details for the Martin 3020 series taper bushing:
- Bore Size: 2.938 inches (2-15/16″)
- Keyway: 3/4 x 1/4 inch
- Outside Diameter: 4.25 inches
- Length (OAL): 2 inches
- Material: Sintered powder steel
- Taper Angle: 8 degrees
- Mounting Style: Flush mounted with split taper design
- Fastener: 5/8 – 11 socket set screw with 800 in-lb torque capacity
- Bore Range: 15/16 to 3 inches
Typical Applications
Martin 3020 taper bushings are used in automobiles, construction equipment, agricultural machinery, and home appliances. Bushings are cylindrical parts used to mount pulleys, sheaves, sprockets, or other components to drive shafts for the transmission of mechanical power. Most bushings are split and have a tapered outside surface so they will clamp to the shaft when tightened against the tapered bore of the driven component. Common applications include motor-driven conveyor systems, industrial belt drives, and variable-speed drive assemblies where secure shaft-to-component clamping is critical.
Compatibility & Replacements
Compatible With
- Martin 3020 series taper bushed sprockets
- Martin 3020 series taper bushed sheaves and pulleys
- Taper bored couplings and hubs compatible with 3020 series
- Drive shafts with standard metric or inch bores
- Power transmission assemblies requiring 8-degree taper bushings
Replaces / Drop-In Replacement For
This Martin taper bushing is interchangeable with taper bushings from various manufacturers. The Martin 3020 2 15/16 directly replaces OEM Martin 3020 2 15/16 units and is compatible with other industry-standard 3020 series taper bushings. Verify part number compatibility with your original equipment before ordering.
Works With
- Martin sprocket hubs and sheaves with 3020 taper bore
- Standard ISO/inch drive shafts and shaft keys
- 2-bolt and 4-bolt hub configurations
- Socket set screw fastening systems (5/8-11 UNC)
- Standard mechanical power transmission systems
