Overview
The Martin NS4-15/16 bushing is a quick-disconnect (QD) short-style shaft coupling bushing engineered for industrial power transmission. Manufactured by Martin Sprocket & Gear, this bushing features a compact hub design paired with standard QD functionality, making it suitable for applications where space is limited or hub height must be minimized. The NS designation distinguishes this as a shorter variant compared to standard N-series bushings.
Key Features
- Quick-disconnect (QD) design allows rapid assembly and disassembly without removing adjacent components
- Flexible mounting orientation—flange can face motor or machine depending on application requirements
- Cast iron construction provides durability and corrosion resistance in industrial environments
- Capscrews remain accessible from outside for convenient installation and adjustment
- Finished bore with keyway for positive torque transmission and shaft alignment
- Compact hub profile reduces overall assembly height in space-constrained installations
Technical Specifications
The Martin NS4-15/16 delivers robust performance across a wide range of industrial applications. Its compact footprint makes it ideal for retrofit installations and tight spacing requirements.
Typical Applications
- Conveyor systems and material handling equipment
- Pump and fan drive assemblies
- Compressor and blower coupling
- Industrial gearbox input/output shafts
- Motor-to-shaft connections requiring quick changeout capability
Compatibility & Replacements
Compatible With
- Martin sprockets (all bore sizes matching 4-15/16 inch)
- Martin sheaves and pulleys with compatible bore diameters
- Standard industrial shafts with keyway slots matching 5/8 x 1-1/4 inch dimensions
- Motors and prime movers with conventional mounting flanges
Replaces / Drop-In Replacement For
The NS4-15/16 is the short-style variant of Martin N 4-15/16 bushings. Verify compatibility with your system integrator before ordering, as shaft bore and component specifications must match exact dimensions.
Works With
- All Martin quick-disconnect bushings sharing the same bore diameter
- Standard industrial sprocket and sheave bore configurations
- Conventional shaft alignment and coupling practices
