Overview
The Martin 3535 3 1/4 tapered bushing is a split taper lock bushing engineered for reliable power transmission equipment. With a 3.25″ finished bore and 5″ outer diameter, this bushing delivers the precision needed to mount pulleys, sheaves, and sprockets on drive shafts. Used for mounting a taper bushed pulley, sheave, or sprocket on a drive shaft, the 3535 series combines compact design with superior holding power.
Key Features
- Flush mounted for reduced mounting width with split taper for tight clamp to shafts
- Class 30 gray cast iron for resistance to wear, galling, and corrosion
- Keyed to the shaft to prevent rotation and interchangeable with taper bushings from various manufacturers
- Split taper design provides excellent clamping force without protruding components
- Standard 1/2-13 mounting screws with 1000 in-lb torque rating
Technical Specifications
- Series: 3535
- Bore Diameter: 3.25″ (3 1/4″)
- Outside Diameter: 5″
- Overall Length: 3.5″
- Material: Class 30 Gray Cast Iron
- Keyway Size: 3/4 x 3/8″
- Taper Angle: 8 degrees
- Bolt Circle Diameter: 4.83″
- Number of Bolt Holes: 3
- Screw Size / Length: 1/2 x 1-1/2″
- Screw Torque Rating: 1000 in-lb
- Mounting Hub Range: 7 to 7-3/4″ diameter
- Weight: Approximately 7.0 lbs
Typical Applications
Used in automobiles, construction equipment, agricultural machinery, and home appliances. Ideal for drive shaft assemblies requiring tight, secure coupling of rotating components. The split taper design provides superior clamping force over traditional keyway-and-setscrew methods, making it preferred for heavy-duty power transmission.
Compatibility & Replacements
Compatible With
- Pulleys with tapered bores
- Sheaves with 8-degree taper
- Sprockets with finished taper bores
- 3535 series taper lock hubs and components
Replaces / Drop-In Replacement For
- Dodge 3535X3 1/4KW
- TB Woods TL3535314
- Precision Pulley & Idler 3535X3 1/4KW
- US Tsubaki 3535 3 1/4
Works With
- Standard 1/2-13 UNC fastening hardware
- Hex key and wrench torque tools (1000 in-lb capacity)
- Industrial power transmission shafting (solid or hollow)
- All 3535 series taper lock components from compatible manufacturers
