Overview
The 3020 taper-lock bushing is a non-flanged split bushing used to mount sprockets, sheaves, and pulleys onto shafts with superior clamping force. Unlike standard bored-to-size components that rely only on keyways and setscrews, this bushing utilizes a tapered design that wedges inward as fastening screws are tightened, delivering a secure hold equivalent to shrink-fit performance. With a 1-15/16″ bore and standard keyway, this bushing accommodates a wide range of pulley and sprocket applications in mechanical power transmission systems.
Key Features
- Flush-mount design: Sits cleanly in tapered bores without protruding flanges.
- 8-degree taper: Wedging action creates powerful clamping force with simple screw tightening.
- Easy installation and removal: No special tools or destructive techniques required.
- Split-bushing construction: Allows installation without disassembling machinery.
- Steel with black oxide coating: Durable, corrosion-resistant finish for industrial environments.
- ANSI standard design: Globally accepted bore and keyway specifications.
Technical Specifications
- Bushing Series: 3020
- Bore Diameter: 1-15/16″ (1.9375″)
- Keyway Size: 1/2″ × 1/4″
- Outside Diameter: 4-1/4″
- Bushing Length: 2″
- Material: Steel with black oxide coating
- Taper Angle: 8 degrees
- Weight (typical): 6 lbs
- Bore Type: Finished with keyway
- Design Standard: ANSI compliant
Typical Applications
The 3020 taper-lock bushing is widely used across industrial machinery and power transmission systems:
- Belt pulleys and sheaves: Mounting on V-belt and flat-belt drive systems.
- Sprockets: Roller chain sprocket securement on motor and transmission shafts.
- Drum and tail pulleys: Conveyor and material handling equipment.
- Drive pulleys and gearboxes: High-torque mechanical transmission applications.
- Industrial automation equipment: Compressors, fans, and transmission components in motion control systems.
Compatibility & Replacements
Compatible With
- Martin Sprocket & Gear taper-lock sprockets and pulleys
- Dodge taper-lock bushing systems (3020 series)
- TB Woods 3020-series sprockets and sheaves
- US Tsubaki sprocket and pulley systems
- Warner Electric taper-lock components
- Precision Pulley & Idler taper-bushing sprockets
- Standard ANSI 8-degree tapered bore sprockets and pulleys
Replaces / Drop-In Replacement For
The 3020-1-15/16 is interchangeable with equivalent 3020-series taper-lock bushings from major manufacturers including Martin, Dodge, TB Woods, and other ANSI-compliant producers. Verify existing bore diameter (1-15/16″), keyway size (1/2″ × 1/4″), and outside diameter (4-1/4″) before ordering as a replacement.
Works With
- ANSI-standard taper-bushing sprockets (1-15/16″ bore)
- Industrial pulley systems with 8-degree tapered bores
- Shaft mounting applications from 1/2″ to 5″ bore capacity (3020 series)
- Standard mechanical power transmission systems (belt, chain, and gear drives)
- Metric bore alternatives available for international equipment
