Sandvik Coromant 6035645 Replaceable-tip Drill Corodrill 870

Product Description

The SANDVIK COROMANT 6035645 is a replaceable-tip drill body from the CoroDrill 870 series, engineered for precision hole-making in metal-cutting applications. The body accepts 870-1290-11-PM indexable drill tips at insert seat size 11, covering a drill diameter range of 12.5 to 12.99 mm (0.4921 to 0.5114 inches). Maximum drill depth reaches 66.95 mm (2.6358 inches), representing a 5xD depth-to-diameter ratio. The tool body is constructed of steel with a straight-cylindrical shank and features through-coolant capability for chip evacuation and thermal management during deep-hole drilling. Machinists and CNC operators working in job shop, production, or maintenance environments install and service this tool body.

This drill body is suited for CNC machining centers, turning centers, and drill presses where indexable replaceable-tip drills are specified. The 870 LX-5 toolholder style and straight-cylindrical shank allow direct mounting in standard ER or hydraulic chucks sized for the shank diameter. The 5xD depth ratio makes this body appropriate for moderate-depth hole applications in steel, cast iron, and similar workpiece materials where a full-length solid carbide drill is unnecessary. Insert replacement rather than full-tool replacement reduces tooling cost per hole over high-volume runs.

Key Features

• Replaceable-tip design accepts 870-1290-11-PM drill tip inserts, insert seat size 11
• Drill diameter range: 12.5 to 12.99 mm (0.4921 to 0.5114 inches)
• 5xD depth-to-diameter ratio with maximum drill depth of 66.95 mm (2.6358 inches)
• Through-coolant construction supports high-pressure coolant delivery to the cutting zone
• Steel tool body with straight-cylindrical shank in 870 LX-5 toolholder style
• Overall length of 130 mm (5.1181 inches) with 80.02 mm (3.1504 inches) flute length

Compatibility

Compatible insert style is 870-1290-11-PM at insert seat size 11. This body is part of the CoroDrill 870 series and is designed for use with the 870 LX-5 toolholder style.

Installation Notes

Installation and insert indexing should be performed by a qualified machinist or tooling technician. Power down and de-energize the machine spindle before accessing the tool holder or changing inserts. Use manufacturer-specified torx or hex keys for insert clamping to avoid seat damage - do not substitute non-calibrated tools. Through-coolant connections must be verified leak-free before resuming cutting operations.