Sandvik Coromant 6476450 Indexable Boring Bar Coroturn 107

Product Description

The SANDVIK COROMANT 6476450 is an indexable boring bar from the CoroTurn 107 series, designed for internal turning operations on CNC lathes and turning centers. Built from steel, this right-hand holder accepts CCMT 09 T3 08 inserts secured by a screw clamping method. The minimum bore diameter is 0.9291 inches, with a 3/4-inch shank diameter and an overall length of 10 inches. A neutral rake angle and a -5 degree lead angle define the cutting geometry. The center-to-cutting-edge dimension measures 0.500 inches. Coolant-through capability is supported via a 1/8 G coolant hole thread, making this bar suitable for demanding internal machining where heat and chip evacuation matter.

This boring bar is intended for internal turning and finish boring on metal components in both production and job-shop environments. It is a multi-use toolholder rated for turning applications across a range of workpiece materials. The CoroTurn 107 series is commonly installed in shops running medium to small bore diameters where precise insert positioning and consistent surface finish are required. Machinists and CNC setup technicians working with CCMT-style inserts will find this holder integrates directly into existing tooling programs without additional adaptation hardware.

Key Features

• Minimum bore diameter of 0.9291 inches suits small-to-medium internal turning operations
• Screw insert clamping provides rigid, repeatable insert location
• Coolant-through design with 1/8 G thread improves chip control and tool life in deep bores
• Neutral rake geometry with 0-degree rake angle and -5 degree lead angle for balanced cutting forces
• Steel construction with 3/4-inch shank diameter for compatibility with standard toolpost and turret bores
• Multi-use designation supports varied internal turning applications from the same holder

Compatibility

Designed to accept CCMT 09 T3 08 indexable inserts. Toolholder style is A..SCLCR/L..HP within the CoroTurn 107 series. Verify machine turret bore and coolant connection thread before installation.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before inserting or removing the boring bar from the turret. Torque the insert screw according to the insert manufacturer's documentation and ensure coolant lines are properly connected to the 1/8 G thread port before resuming operation. Inspect insert seating and shim condition at each tool change to maintain bore diameter consistency.