Sandvik Coromant 5727727 Boring Bar Modular Adapter

Product Description

The SANDVIK COROMANT 5727727 is a boring bar modular adapter designed for precision internal machining operations. It accepts a 0.75 inch bore diameter and provides a 60 mm (2.3622 inch) bore depth, making it suitable for reaching into deeper workpiece cavities with consistent rigidity. The adapter features an integrated internal coolant channel that delivers cutting fluid directly to the cutting zone, reducing heat buildup and extending tool life. With a body diameter of 1.5748 inches and a C4 connection size, this adapter interfaces with compatible modular tooling systems. It weighs 1.11 pounds and is sold individually. Licensed machinists and CNC tooling specialists are the primary installers.

This modular adapter is used in CNC turning and boring applications where a secure, repeatable interface between the machine spindle and boring bar is required. It is suited for both roughing and finishing passes on internal diameters in metal workpieces. The internal coolant feature makes it particularly well-suited for deeper bore operations where flood coolant cannot adequately reach the cutting edge. The C4 connection size positions it for use in modular tooling setups requiring standardized coupling dimensions. The lock screw interface measures 2.45 inches, providing a stable mechanical connection under cutting loads.

Key Features

• 0.75 inch bore diameter for precise internal machining fitment
• 60 mm (2.3622 inch) bore depth supports deeper cavity reach
• Internal coolant channel directs fluid to the cutting zone
• C4 connection size for standardized modular tooling compatibility
• 1.5748 inch body diameter provides a rigid, stable toolholder profile
• 2.45 inch lock screw size for secure mechanical engagement

Compatibility

Designed for use with C4-series modular boring and turning tooling systems. The manufacturer part number cross-reference for this adapter is C4-131-00060-750.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Always power down and lock out the machine spindle before mounting or removing the adapter. Ensure mating connection surfaces are clean and free of chips or burrs before assembly to maintain proper seating and runout accuracy. Torque the lock screw per the modular tooling system manufacturer guidelines using calibrated tooling — do not use impact drivers.