Sandvik Coromant 5727878 Modular Turning Profiling Head C4

Product Description

The SANDVIK COROMANT 5727878 is a modular turning profiling head from the CoroTurn 107 series, designed for internal turning and profiling operations on CNC lathes and turning centers. This left-hand cutting head features a Size C4 system with a head connection size of C5, a head length projection of 70 mm (2.7559 inches), and a minimum hole diameter of 20 mm (0.7874 inches). It accepts CCMT 09T308 inserts held by a clamp and screw method, and includes through-coolant capability to support high-performance machining in deep-bore applications. The neck diameter is 40 mm (1.5748 inches), and the center-to-cutting-edge distance is 11 mm (0.4331 inches).

This profiling head is suited for internal finish and semi-finish turning in bore depths up to 70 mm (2.7559 inches). It is used in production and job-shop environments where modular tooling systems are employed for quick changeover and repeatable tool positioning. The left-hand cutting direction makes it appropriate for specific spindle rotation and bore-entry configurations on both horizontal and vertical turning machines. Machinists and CNC tooling technicians working in aerospace, automotive, and general precision machining will encounter this head in modular boring bar assemblies.

Key Features

• CoroTurn 107 series modular system with Size C4 body and C5 head connection
• Left-hand internal cutting direction for bore profiling and turning
• Accepts CCMT 09T308 inserts via clamp and screw holding method
• Through-coolant enabled for chip evacuation and tool life in deep-bore cuts
• Head length projection of 70 mm (2.7559 inches) with minimum hole diameter of 20 mm (0.7874 inches)
• Radial rake angle of -8.3967 degrees and axial rake angle of 0 degrees for controlled chip formation

Compatibility

Compatible with CCMT 09T308 inserts. Designed for use with Size C4 modular turning system components with a C5 head connection interface, as specified for the CoroTurn 107 series.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician with the machine spindle fully stopped and the machine locked out per applicable shop safety procedures. Ensure the modular connection interface is clean and free of debris before seating the head to maintain accurate tool positioning. Torque the clamping mechanism according to the tooling system documentation for the C5 connection interface. Verify coolant passage alignment before engaging through-coolant flow.