Sandvik Coromant 5765385 Indexable Insert Drill 21mm

Product Description

The SANDVIK COROMANT 5765385 is a straight-shank indexable insert drill designed for high-productivity drilling in metal cutting applications. Built on the CoroDrill 880 platform, this drill body accepts two indexable inserts and achieves a maximum drill depth of 3.4311 inches at a 4xD depth-to-diameter ratio. The 21mm (0.8898 inch) cutting diameter and 25mm (0.9843 inch) straight cylindrical shank make it compatible with standard toolholder systems found on CNC machining centers and lathes. The steel body is engineered for rigidity under the high radial and axial forces generated during indexable drilling. Coolant-through capability supports chip evacuation and insert life in demanding materials.

This drill body is suited for production drilling in ferrous and non-ferrous materials on CNC turning centers and vertical or horizontal machining centers. It is typically applied in automotive, aerospace, energy, and general engineering environments where repeatable hole quality and rapid insert changeout are required. The right-hand cutting direction and straight shank configuration make it straightforward to set up in collet chucks, hydraulic chucks, or Weldon-flat holders sized for 25mm shanks. Machinists and CNC programmers working in job shop and production environments will find the 4xD ratio suitable for through-holes and blind holes in a standard depth range.

Key Features

• 21mm (0.8898 inch) maximum drill diameter with 4xD depth-to-diameter ratio
• Maximum drill depth of 3.4311 inches within the 3.0000 to 4.0000 inch depth range class
• Accepts two CoroDrill 880..L-04 series indexable inserts for fast edge changes without removing the body
• Coolant-through design promotes chip evacuation and extends insert life in deep-hole applications
• 25mm straight cylindrical shank fits standard CNC toolholders and reduces setup time
• Right-hand cutting direction; steel body construction provides rigidity under high drilling forces

Compatibility

Designed for use with CoroDrill 880..L-04 series indexable inserts (insert size 2.80mm / 0.1102 inch). Verify insert grade and geometry selection against workpiece material and machine spindle specifications before ordering inserts separately.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolsetting technician. Ensure the machine spindle is fully stopped and the toolchanger is disabled before mounting or removing the drill body. Confirm the toolholder bore is clean and free of chips before seating the 25mm shank, and torque the clamping screws to the toolholder specification. Follow the machine tool builder and SANDVIK COROMANT application guidelines for starting feed and speed parameters when running a new insert grade or workpiece material.