Sandvik Coromant 6239990 Replaceable-tip Drill 25mm 5xd

Product Description

The SANDVIK COROMANT 6239990 is a replaceable-tip drill body from the CoroDrill 870 series, designed for precision hole-making in metal cutting applications. The tool accepts 870-2590-25-PM inserts at insert seat size 25, covering a drill diameter range of 25 to 25.99 mm (0.9843 to 1.0232 inches). Maximum drill depth reaches 133.88 mm (5.2709 inches), representing a 5xD depth-to-diameter ratio. Overall length is 223 mm (8.7795 inches). The steel body features a straight-cylindrical shank and through-coolant capability to support chip evacuation and tool life at depth. Machinists and CNC operators install this tool in machining centers and lathes equipped for high-pressure coolant delivery.

The 6239990 is suited for production drilling in medium to large component manufacturing where consistent hole geometry and repeatable insert indexing are required. The replaceable-tip design reduces downtime by allowing tip changes at the machine without removing the body from the spindle. The 870 LX-5 toolholder style designation applies to this body. Flute length is 159.09 mm (6.2634 inches), and shank length is 60 mm (2.3622 inches), providing adequate clearance in typical workholding setups. Through-coolant supports drilling into harder materials and deeper holes where flood coolant alone is insufficient.

Key Features

• Replaceable-tip system using 870-2590-25-PM inserts, insert seat size 25
• 5xD depth-to-diameter ratio with maximum drill depth of 133.88 mm (5.2709 inches)
• Through-coolant channel for effective chip evacuation and heat management at depth
• Straight-cylindrical shank for direct spindle or toolholder mounting
• Steel body construction, CoroDrill 870 series, toolholder style 870 LX-5
• Overall length of 223 mm (8.7795 inches) with flute length of 159.09 mm (6.2634 inches)

Compatibility

Compatible insert style is 870-2590-25-PM at insert seat size 25. This body is part of the CoroDrill 870 series with toolholder style 870 LX-5, covering a maximum drill depth range of 125 to 160 mm (4.5 to 6.0 inches) and a drill diameter range of 25 to 25.99 mm.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. The machine spindle must be fully stopped and the tool-change cycle completed before handling the drill body or indexing inserts. Verify that the machine spindle interface and coolant connection are compatible with the straight-cylindrical shank and through-coolant port before mounting. Follow the toolholder manufacturer torque guidelines for clamping the insert tip to avoid seat damage.