Sgs 66525 Solid Carbide Jobber Drill Bit 1/4 Inch

Product Description

The SGS 66525 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding materials. The 1/4 inch (0.2047 decimal inch) diameter bit features a 135-degree split-point geometry with web thinning to reduce thrust and improve centering on entry. The Ti-NAMITE-X coating provides enhanced wear resistance and heat dissipation, extending tool life in ferrous and non-ferrous applications. With an overall length of 3.2283 inches (82.00 mm) and a 2-flute spiral configuration, this bit is suited for use in CNC machining centers, drill presses, and hand-held power tools where precision and repeatability matter. Licensed machinists, tool and die technicians, and production floor operators are the primary users.

The SGS 66525 Series 142P is built for production drilling environments where consistency and dimensional accuracy are required. The straight-cylindrical shank (0.3100 inch diameter) seats securely in standard drill chucks and collet holders. With a flute-to-diameter ratio of 5xD, this bit handles moderate-depth drilling up to 1.3780 inches (35.00 mm). The DIN 6537 specification ensures dimensional conformance for shops working to metric or imperial standards. Typical applications include drilling in steel, stainless steel, cast iron, aluminum, and similar materials where a high-performance carbide tool is specified.

Key Features

• Solid micrograin carbide construction for hardness and edge retention
• Ti-NAMITE-X coating for improved wear resistance and heat management
• 135-degree split point with web thinning for reduced entry thrust and accurate positioning
• Coolant-through design to support internal coolant delivery during deep or high-speed drilling
• Right-hand cutting, 2-flute spiral flute for efficient chip evacuation
• Conforms to DIN 6537 specification for dimensional consistency

Compatibility

Designed as an OEM-style replacement and high-performance drill bit for use in standard drill chucks and collet systems accepting a 0.3100 inch straight-cylindrical shank. Fits applications within the 0.2000 to 0.2500 decimal inch drill bit size range per Series 142P specifications.

Installation Notes

Installation and use of solid carbide drill bits should be performed by qualified machinists or tooling technicians familiar with CNC and manual drilling equipment. Ensure the machine spindle and chuck or collet are clean and free of debris before seating the shank. Carbide tooling is brittle — avoid side loading, interrupted cuts without proper feed rate adjustment, or dropping the bit on hard surfaces. Always verify that internal coolant supply is active before engaging coolant-through drilling cycles.