Eagle Cutting Tool 1090-128-I Hss Silver Deming Drill Bit

Product Description

The EAGLE CUTTING TOOL 1090-128-I is a 1-7/16 inch high-speed steel (HSS) Silver Deming drill bit with a reduced 1/2 inch straight shank. Silver Deming bits are designed specifically for drilling large-diameter holes that exceed the capacity of a standard 3/8 inch chuck. The reduced shank allows this oversized bit to seat in any 1/2 inch drill press or hand drill chuck, making it a practical choice for machinists, pipefitters, electricians, and maintenance technicians who need to bore large holes through metal, wood, or plastic without specialty tooling.

This bit is suited for general-purpose large-hole drilling in light industrial and trade applications. Common uses include drilling conduit knockouts, pipe clearance holes, and oversized fastener holes in structural steel, angle iron, and plate stock. The 1/2 inch shank format is compatible with bench drill presses, magnetic base drills, and heavy-duty corded hand drills found in the field and shop alike.

Key Features

• 1-7/16 inch cutting diameter for large-bore drilling without specialty equipment
• Reduced 1/2 inch straight shank fits standard 1/2 inch chucks on drill presses and hand drills
• High-speed steel (HSS) construction provides durability across metal, wood, and plastic substrates
• Silver Deming geometry balances aggressive cutting with controlled chip clearance
• Import-grade pricing suitable for high-consumption or general shop use

Compatibility

Designed for use with any drill press or hand drill equipped with a 1/2 inch chuck capacity. Fits standard 1/2 inch drill press spindles and compatible chuck systems without adapters.

Installation Notes

Silver Deming bits should be installed and operated by qualified machinists or tradespeople familiar with large-diameter drilling procedures. Always secure the workpiece firmly before drilling and operate at appropriate low RPM settings for large-diameter bits to prevent bit walk and reduce heat buildup. Use cutting oil or lubricant when drilling ferrous metals to extend bit life. Inspect the chuck and shank seating before each use to ensure full engagement.

Technical Specifications

• Cutting Diameter: 1-7/16 inches
• Shank Diameter: 1/2 inch
• Shank Type: Straight Reduced
• Material: High-Speed Steel (HSS)
• Weight: 1.2 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: 1090-128-I