Overview
The Martin SF-2-15/16 QD Quick Disconnect Bushing is a split-taper quick disconnect bushing engineered for power transmission applications. This SF bushing features a 2.9375 in bore, 4.625 in flange OD, and 2.0625 length through bore, constructed of ductile iron. It is used for mounting a quick disconnect pulley, sheave, or sprocket on a drive shaft, with a split design through the flange and taper to provide strong clamping on the shaft.
Key Features
- Completely split design allows for quick and easy installation and removal
- Ductile iron construction provides greater strength than gray cast iron and resistance to wear, galling, and corrosion
- Keyed to the shaft with a set screw over the keyway to help keep the key in place on vertical shafts and with vibrating loads
- Finished bore with 3/4 x 1/32″ keyway
- Split tapered cone design generates secure press fit and cone grip
- Three bolt holes for mounting to sheaves, sprockets, and other components
Technical Specifications
The Martin SF-2-15/16 features robust construction suited for continuous-duty power transmission:
Typical Applications
This quick disconnect bushing is used in automobiles, construction equipment, agricultural machinery, and home appliances. Split taper bushings mount sheaves and sprockets on shafts and are built to withstand torque generated in power transmission. Common uses include:
- Pulley and sheave mounting on motor and intermediate shafts
- Sprocket installation on conveyor and drive systems
- Belt-driven equipment where frequent replacement is required
- Agricultural and construction equipment power take-off (PTO) systems
Compatibility & Replacements
Compatible With
- Martin QD sheaves and sprockets with standard taper hubs
- Standard keyed drive shafts (SAE and metric sizing)
- Belt and chain drive systems
- Power transmission equipment requiring quick-disconnect mounting
Replaces / Drop-In Replacement For
Verify compatibility with your specific equipment before ordering. The SF-2-15/16 is a standard Martin size in the SF series; consult Martin part catalogs or contact a distributor for legacy part cross-references.
Works With
- Martin QD sheaves (various groove configurations)
- Martin QD sprockets and other power transmission components
- Standard installation tools (Allen wrench, torque wrench, socket set)
- ISO and SAE standard shaft keyseat designs
