Sandvik Coromant 5721660 Indexable Boring Bar Coroturn 111

Product Description

The SANDVIK COROMANT 5721660 is an indexable boring bar from the CoroTurn 111 series, designed for internal turning and boring operations on CNC lathes and turning centers. The bar features a 0.3228-inch minimum bore diameter and a 1/4-inch round shank, making it suited for small-diameter internal machining. A screw-clamp insert holding method secures WPMT 02 01 02 inserts with a neutral rake angle and a -5 degree lead angle. The 3.25-inch overall length and steel construction provide rigidity in confined bore applications. Coolant-through capability supports chip evacuation and tool life in production environments. Installed by machinists and CNC toolroom technicians.

This boring bar is used in precision internal turning applications on CNC lathes and turning centers where small bore diameters must be machined to close tolerances. Its right-hand cut orientation and CoroTurn 111 series design make it a fit for both light finishing and general-purpose boring passes in ferrous and non-ferrous materials. The multi-use tool designation indicates compatibility across a range of insert grades within the WPMT 02 01 02 family, giving toolroom staff flexibility when selecting coatings or substrates for specific workpiece materials.

Key Features

• Minimum bore diameter of 0.3228 inches for small-diameter internal turning
• 1/4-inch shank diameter with 3.25-inch overall length for reach in confined bores
• Screw-clamp insert holding for secure seating of WPMT 02 01 02 inserts
• Coolant-through design supports chip flushing and extended insert life
• Neutral rake, -5 degree lead angle geometry for controlled cutting action
• Multi-use tool designation allows use with multiple insert grades in the WPMT 02 01 02 family

Compatibility

Accepts WPMT 02 01 02 indexable inserts. Part of the CoroTurn 111 series. Confirmed right-hand cut orientation; verify bore diameter clearance and shank clamping method before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolroom technician. Secure the shank in a compatible boring bar holder or turret pocket per machine tool specifications, ensuring proper clamping torque per the machine tool builder guidelines. Power down and lock out the machine spindle before inserting or indexing tooling. Verify coolant-through passages are clear and aligned before running the spindle under load.