Sandvik Coromant 7357986 Replaceable Tip Drill 20mm Carbide

Product Description

The SANDVIK COROMANT 7357986 is a carbide replaceable tip drill from the CoroDrill 870 series, designed for high-productivity hole-making in metal cutting applications. The tip is manufactured from solid carbide with a TiAlN coating applied via PVD process, delivering strong wear resistance and thermal stability at the cutting edge. The drill features a 20mm cutting diameter (0.7874 inches) and a 142-degree included angle, which suits a wide range of workpiece materials and drilling conditions. This tool is intended for use by machinists and metalworking professionals in production and job shop environments.

The 7357986 fits the CoroDrill 870 replaceable tip system, which uses a dedicated insert seat size 20 body. This modular design allows the carbide tip to be swapped without replacing the entire drill body, reducing tooling cost per hole over time. The PM insert geometry and 4334 grade combination is suited for drilling steel and cast iron at controlled feed and speed parameters. It does not include through-spindle coolant capability, so coolant delivery must be managed externally or via flood application.

Key Features

• Solid carbide tip with TiAlN PVD coating for wear resistance and thermal stability
• 20mm cutting diameter (0.7874 inches) with 142-degree included angle
• PM insert geometry with manufacturer grade 4334
• Modular CoroDrill 870 system with insert seat size 20 compatibility
• No coolant-through design — suited for flood or external coolant setups
• Lightweight at 0.055 pounds for easy handling and tool change

Compatibility

Designed for use with CoroDrill 870 series drill bodies with insert seat size 20. This replaceable tip is part of the SANDVIK COROMANT CoroDrill 870 modular drilling system.

Installation Notes

Installation should be performed by a qualified machinist following the tool manufacturer's torque and seating procedures for the CoroDrill 870 system. Ensure the spindle is fully stopped and the machine is locked out before changing the replaceable tip. Inspect the insert seat for chips, debris, or damage before seating the new tip. Do not exceed the recommended cutting parameters for grade 4334 in the applicable workpiece material.