Sandvik Coromant 5734215 Indexable Boring Bar 3/8 in

Product Description

The SANDVIK COROMANT 5734215 is a solid carbide indexable boring bar in the CoroTurn 107 series, designed for internal turning and boring operations on CNC lathes and turning centers. It features a 3/8 inch (9.53 mm) shank diameter, a minimum bore diameter of 0.4803 inches (12.20 mm), and an overall length of 6 inches (152.40 mm). The toolholder uses screw clamping to secure a single TCMT 221 insert and supports coolant-through delivery for improved chip evacuation and tool life. Licensed machinists and CNC operators install this bar for precision internal diameter work where close bore clearances are required.

This boring bar is suited for both boring and turning applications in a single toolholder setup, making it a multi-use option for shops running tight-clearance internal features. The right-hand cut orientation and neutral rake angle (0 degrees lead and rake) support consistent, stable cutting across a range of workpiece materials. It is typically used in production and job-shop environments on CNC turning centers requiring small-diameter internal machining capability.

Key Features

• Solid carbide construction for rigidity and vibration resistance in small-bore applications
• Minimum bore diameter of 0.4803 inches (12.20 mm) for tight-clearance internal features
• Coolant-through capability supports chip flushing and extended insert life
• Screw clamping secures TCMT 221 insert for repeatable edge positioning
• Multi-use toolholder supports both boring and turning operations
• Neutral rake angle (0 degrees) provides versatile cutting geometry across materials

Compatibility

Compatible with TCMT 221 series inserts with a 1/4 inch (6.35 mm) inscribed circle. Toolholder style is E-STFC, part of the SANDVIK COROMANT CoroTurn 107 series.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is powered down and the turret is in a safe index position before mounting or removing the boring bar. The shank must be clamped securely in the toolholder block with adequate contact length to minimize deflection during cutting. Always verify insert seating and screw torque per the insert manufacturer's guidelines before initiating a cut.