Overview
The Martin SH 1-7/16 quick disconnect bushing is a precision-engineered component for shaft mounting applications in power transmission systems. This ductile iron bushing provides reliable, repeatable clamping on drive shafts and supports easy removal and reinstallation without tools. Suitable for sprockets, sheaves, couplings, and pulleys across industrial machinery, agricultural equipment, and conveyor systems.
Key Features
- Quick disconnect design allows tool-free mounting and removal on drive shafts
- Ductile iron construction provides superior strength and wear resistance
- Split flange and tapered bore ensure consistent, secure clamping
- Keyway prevents rotational slip and improves load distribution
- Set screw over keyway stabilizes vertical shaft and vibration-heavy applications
- Standardized SH bushing interface compatible with industry-standard driven components
Technical Specifications
Bore and Dimensions:
Bore diameter: 1.4375 in (1-7/16″)
Flange outside diameter: 2.6875 in
Barrel diameter: 1.871 in
Barrel length: 0.875 in
Length through bore: 1.3125 in
Flange thickness: 0.4375 in
Overall length: 1.313 in
Fastening and Keyway:
Keyway size: 3/8″ × 1/16″
Screw thread size: 1/4-20 in
Set screw size: 1/4-20 × 1/4
Screw length: 1-3/8 in
Bolt circle diameter: 2-1/4 in
Number of bolt holes: 3
Performance and Material:
Material: Ductile iron
Torque rating: 3,500 in-lb
Screw torque: 108 in-lb
Typical Applications
The Martin SH 1-7/16 bushing is widely used in industrial power transmission and mechanical drive systems. Common applications include:
- Pulley and sheave mounting on motor and gearbox shafts
- Sprocket mounting for chain and belt drives
- Coupling connection in shaft alignment assemblies
- Agricultural equipment drive shafts
- Conveyor and material handling systems
- Construction and industrial machinery
Compatibility & Replacements
Compatible With
- Standard SH-size driven components (pulleys, sheaves, sprockets, couplings)
- Motor and gearbox shafts with 1-7/16″ bore diameter requirements
- 3,500 in-lb torque-rated drive systems
- Industry-standard power transmission equipment
Replaces / Drop-In Replacement For
The Martin SH 1-7/16 (Catalog Number 120075) is the standard replacement for equivalent SH 1-7/16 quick disconnect bushings from Martin Sprocket & Gear. Verify exact compatibility with your original equipment documentation before ordering.
Works With
- Martin Sprocket & Gear driven components and power transmission products
- Industry-standard QD bushing mounting interfaces
- ANSI-compliant pulley, sheave, and sprocket designs
- Metric and imperial shaft diameter applications via flange bolting
