Sandvik Coromant 5734142 Indexable Boring Bar Left Hand

Product Description

The SANDVIK COROMANT 5734142 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. Built to the E12S-SCLCL 3 toolholder style, it features a 3/4-inch shank diameter, a 10-inch overall length, and a minimum bore diameter of 0.929 inches (23.60 mm). Screw clamping secures a single CCMT 32.52 insert, and coolant-through capability supports consistent chip evacuation in deep-bore applications. The neutral rake geometry and 0-degree rake angle make it suitable for a wide range of workpiece materials. Licensed machinists and CNC operators typically specify this bar for precision internal diameter work requiring tight tolerances.

This boring bar is intended for use in precision machining environments including job shops, production turning cells, and tool rooms. The left-hand cut orientation suits specific spindle rotation and approach directions common in Swiss-style and gang-tool setups. The CoroTurn 107 series is engineered for light to medium cutting depths with CCMT insert geometry, making it a practical choice when bore diameter, surface finish, and tool life consistency are priorities. The 1/2-inch center-to-cutting-edge dimension and 0.75-inch neck diameter are relevant when planning clearance in close-tolerance bore applications.

Key Features

• Solid carbide construction for rigidity and vibration resistance in small-diameter boring
• Minimum bore diameter of 0.929 inches (23.60 mm) for tight internal feature access
• Screw clamping insert retention with CCMT 32.52 insert compatibility
• Coolant-through design to support chip control and thermal management
• Left-hand cut orientation for specific approach and spindle configurations
• Neutral rake (0-degree) geometry suitable for diverse workpiece materials

Compatibility

Designed for use with CCMT 32.52 inserts. Toolholder style is E-SCLC. Part of the SANDVIK COROMANT CoroTurn 107 series. Catalog number E12S-SCLCL 3.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. The machine spindle must be fully stopped and the turret or tool post locked out before mounting or removing the boring bar. Verify shank clamp torque against the machine tool specification and confirm insert seating before taking a test cut. Follow the insert manufacturer guidance for CCMT 32.52 screw torque values.