Sandvik Coromant 7357978 Carbide Replaceable Tip Drill 19.80mm

Product Description

The SANDVIK COROMANT 7357978 is a solid carbide replaceable tip drill designed for high-productivity hole-making in metal cutting applications. This drill tip carries the manufacturer grade 4334 designation and features a TiAlN (Titanium Aluminum Nitride) coating applied via PVD process, which extends tool life under elevated cutting temperatures. The 142-degree included angle geometry suits a wide range of workpiece materials and entry conditions. With a cutting diameter of 19.80mm (0.7795 inches), this tip fits the CoroDrill 870 insert seat size 19 system. Machinists and tooling technicians in production environments install this tip as the consumable cutting element on compatible CoroDrill 870 drill bodies.

This replaceable tip is suited for use in CNC machining centers, turning centers with live tooling, and dedicated drilling machines in both job shop and high-volume production settings. The PM insert geometry is optimized for stable, controlled chip formation across a broad range of workpiece materials including steel and cast iron. The tip is sold individually per package (minimum order quantity of 2), making it appropriate for maintaining par stock in production toolrooms where unplanned downtime from drill tip wear is a concern.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding metal cutting operations
• TiAlN PVD coating extends tool life at elevated cutting speeds and temperatures
• 142-degree included angle suits a wide range of drilling applications and entry conditions
• PM insert geometry promotes controlled chip evacuation and consistent hole quality
• 19.80mm (0.7795 inch) cutting diameter fits CoroDrill 870 size 19 insert seats
• Lightweight tip at 0.053 pounds for fast changeover without drill body removal from spindle

Compatibility

Designed for use with SANDVIK COROMANT CoroDrill 870 series drill bodies with insert seat size 19. Specific compatible drill body part numbers should be confirmed using the manufacturer tooling catalog or assembly guide before ordering.

Installation Notes

Replaceable tip drills in the CoroDrill 870 system are serviced by machining professionals familiar with indexable tooling assembly procedures. Ensure the machine spindle is fully stopped and the tool is secured before removing or installing the tip. Follow the manufacturer torque and seating procedure outlined in the CoroDrill 870 assembly documentation — do not improvise clamping methods. Inspect the insert seat for debris, damage, or coolant deposits before seating a new tip to ensure accurate location and full clamping engagement.