Sandvik Coromant 5721118 Boring Bar Holder CAT40

Product Description

The SANDVIK COROMANT 5721118 is a boring bar holder designed for use with CAT40 spindle connections on machining centers. It accepts boring bars with a 1-1/2 inch bore diameter and provides a bore depth of 60.96 mm, allowing secure tool engagement at depth. The body diameter measures 3-3/4 inches with a body length of 60.96 mm. An internal coolant design delivers cutting fluid directly through the holder to the cutting zone, improving chip evacuation and tool life during deep boring operations. This holder is installed and serviced by machinists and CNC setup technicians.

This boring bar holder is suited for CNC machining center applications where CAT40 tooling is the standard spindle interface. It is used in production and job-shop environments for internal diameter boring operations on ferrous and non-ferrous workpieces. The internal coolant feature makes it particularly effective in applications requiring continuous chip flushing. Lock screw compatibility includes part numbers 3021 011-380, and the coolant screw is compatible with part number 3214 010-253. The manufacturer also references this holder under part number AA3B05-40 38 061.

Key Features

• CAT40 spindle connection for standard machining center compatibility
• 1-1/2 inch bore diameter with 60.96 mm bore depth for secure bar retention
• Internal coolant delivery for chip evacuation and extended tool life
• 3-3/4 inch body diameter provides rigid support during boring operations
• No-head body style for compact tool assembly configuration
• Compatible lock screw and coolant screw available as separate components

Compatibility

Compatible lock screws: 3021 011-380. Compatible coolant screw: 3214 010-253. Also referenced under manufacturer part number AA3B05-40 38 061. Designed for use with CAT40 spindle interfaces on CNC machining centers.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machining center spindle before mounting or removing the holder. Use the specified lock screw and torque to the machine tool builder's standard for CAT40 toolholders. Verify internal coolant passages are clear and properly seated before initiating a cutting cycle.