Eagle Cutting Tool C1090-130-I Cobalt Drill Bit 1-15/32 in

Product Description

The EAGLE CUTTING TOOL C1090-130-I is a cobalt screw machine (stub) length drill bit designed for high-performance drilling in hard and abrasive materials. Built from cobalt high-speed steel, this bit delivers superior heat resistance and edge retention compared to standard HSS tooling. It features a 1-15/32 inch cutting diameter with a 1/2 inch straight shank, making it compatible with standard drill chucks and machine spindles. The screw machine length geometry provides added rigidity for precision hole-making in production and maintenance environments. Licensed machinists, tool-and-die technicians, and industrial maintenance mechanics rely on this style of bit for consistent, accurate results in demanding applications.

This drill bit is suited for use on drill presses, milling machines, and CNC equipment where a rigid, short-flute drill is preferred over jobber-length tooling. It performs well in ferrous metals including stainless steel, cast iron, and hardened alloys, as well as tough plastics and composites. The cobalt alloy construction makes it a practical choice in applications where heat buildup from high-feed or dry drilling would degrade standard HSS tooling prematurely. It is well-suited for both production shop use and maintenance repair operations.

Key Features

• 1-15/32 inch cutting diameter for large-bore hole applications
• Cobalt high-speed steel construction for extended tool life in hard materials
• 1/2 inch straight shank fits standard drill chucks and machine spindles
• Screw machine (stub) length geometry provides increased rigidity and reduced deflection
• Suitable for ferrous metals, stainless steel, hardened alloys, and abrasive materials

Compatibility

Designed as an OEM-style replacement or direct substitute for stub-length cobalt drill bits of equivalent diameter and shank size used in drill presses, milling machines, and similar machine tool spindles accepting a 1/2 inch shank.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with machine tool operation. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit from the chuck. Secure the 1/2 inch shank firmly in a properly sized chuck or collet to prevent slippage during cutting. Use appropriate cutting fluid or coolant for the material being drilled to maximize tool life and hole quality.

Technical Specifications

• Cutting Diameter: 1-15/32 inches
• Shank Diameter: 1/2 inch
• Drill Style: Screw Machine (Stub) Length
• Material: Cobalt High-Speed Steel
• Weight: 1.2 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: C1090-130-I