Overview
The Martin 3020-1-15/16 Taper-Lock Bushing is a precision power transmission component engineered for flush-mounted installation on drive shafts. This split tapered bushing secures pulleys, sheaves, sprockets, and other driven components with superior clamping force compared to standard bored-to-size methods that rely solely on keyway and setscrew retention.
Key Features
- Split Taper Design – Uses tightening screws to create excellent clamping force on the shaft
- Sintered Steel Construction – Powder metallurgy delivers greater strength and wear resistance than plain carbon steel
- Flush Mounting – No protruding parts; compact, clean installation footprint
- 8-Degree Taper – Standard taper angle for consistent, reliable shaft engagement
- Keyed Design – 1/2 x 1/4″ keyway prevents rotational slip between shaft and bushing
- Industry-Standard Interchangeable – Compatible with taper-bushed pulleys and sheaves from multiple manufacturers
Technical Specifications
- Bore Diameter: 1-15/16″ (1.9375″)
- Outside Diameter: 4-1/4″
- Overall Length: 2″
- Hub Diameter: 5-5/8″
- Keyway: 1/2 x 1/4″
- Taper Angle: 8 degrees
- Torque Rating: 24,000 in-lb
- Bolt Circle Diameter: 4″
- Bolt Holes: 2 (5/8-11 x 1-1/4″ screws)
- Material: Sintered Steel
- Mounting Style: Flush (non-flanged)
Typical Applications
The Martin 3020-1-15/16 is used across industries where reliable shaft-mounted power transmission is critical:
- Conveyor drive systems (pulleys and sheaves)
- Industrial machinery and equipment
- Agricultural equipment and farm machinery
- Construction and mining equipment
- Automotive and OEM applications
- Coupled pump and motor installations
Compatibility & Replacements
Compatible With
- Martin 3020 series taper-bored pulleys and sheaves
- Industry-standard taper-bushed driven components (multiple manufacturers)
- Drive shafts with 1-15/16″ bore specification
- 2-bolt mounting flanges with 4″ bolt circle
Replaces / Drop-In Replacement For
- Dodge 117113 3020 X 1-15/16 equivalent bushings
- Precision Pulley & Idler 3020X1 15/16KW
- TB Woods TL30201516 and similar 3020 series 1-15/16″ bore units
Works With
- Martin Sprocket & Gear power transmission components
- Standard taper-bored industrial pulleys and sheaves
- Flexible coupling and shaft alignment systems
- Standard power transmission lubricants and maintenance protocols
