Sandvik Coromant 7357579 Carbide Replaceable Tip Drill

Product Description

The SANDVIK COROMANT 7357579 is a solid carbide replaceable tip drill belonging to the CoroDrill 870 series. It features a cutting diameter of 0.4213 inches (10.7 mm) and is designed for high-precision hole-making in demanding production environments. The tip is coated with TiAlN via a PVD process, providing thermal resistance and extended tool life. The 142-degree drill point angle and PM insert geometry support reliable chip control and consistent entry performance. This insert-style drill is intended for use on CNC machining centers and is installed by machinists and tooling technicians in metal fabrication and manufacturing operations.

The CoroDrill 870 replaceable tip drill is suited for solid drilling applications across a wide range of workpiece materials, including steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. The insert seat size 7 and helical flute design are matched to the 870-series drill body. This tip is appropriate for ISO material groups P, M, K, N, and S, making it a versatile option for shops running mixed-material production. It is particularly well-suited for short-hole drilling in structural and precision machined components.

Key Features

• Solid carbide construction with fine grain material grade 4334 for edge strength and wear resistance
• TiAlN coating applied via PVD process for elevated thermal and abrasion resistance
• 142-degree drill point angle with PM geometry for controlled chip formation
• Compatible with ISO material groups P, M, K, N, and S covering steel through titanium
• Helical, 2-flute design with regular spiral for efficient chip evacuation
• Clamp-held insert seat for secure tip retention and repeatable positioning

Compatibility

Designed for use with SANDVIK COROMANT CoroDrill 870 series drill bodies accepting insert seat size 7. ISO number 870-1070-7-PM 4334 identifies the precise body and tip pairing required.

Installation Notes

Installation is performed by qualified tooling technicians or machinists. The machine spindle must be fully stopped and the tool changer or turret secured before replacing or inspecting the tip insert. Use the appropriate torx or clamping key as specified for the CoroDrill 870 seat to achieve correct clamping force — do not overtighten by hand estimation alone. Inspect the insert seat for debris or damage before seating a new tip to ensure proper contact and runout accuracy.