Sgs 66542 Solid Carbide Jobber Drill 6.90mm 135deg

Product Description

The SGS 66542 is a solid carbide jobber-length drill bit engineered for high-performance drilling in demanding production environments. Built to DIN 6537 specification, it features a 135-degree split point with web thinning to reduce thrust and improve centering on entry. The Ti-NAMITE-X coating provides elevated hardness and heat resistance, extending tool life in ferrous and non-ferrous applications. At 6.90 mm in diameter with a 3.58-inch overall length and a 2.09-inch flute length, this drill is suited for machine shops, precision fabrication, and CNC drilling operations where consistent hole quality and tight tolerances are required. Installation is performed by machinists and tooling professionals.

The SGS 66542 is intended for use in CNC machining centers, drill presses, and other rigid setups requiring precise, repeatable hole location. The straight-cylindrical shank at 8.00 mm diameter seats securely in standard chucks and collets. With a 5xD flute-to-diameter ratio and a maximum drilling depth of 1.14 inches (29.00 mm), this bit is well-matched to through-hole and blind-hole applications in steel, cast iron, aluminum, and similar materials where micrograin carbide and Ti-NAMITE-X coating deliver reliable results.

Key Features

• Solid micrograin carbide construction for superior wear resistance and cutting edge integrity
• Ti-NAMITE-X coating increases surface hardness and reduces heat buildup at the cutting zone
• 135-degree split point with web thinning reduces entry thrust and improves self-centering
• Coolant-through design supports internal coolant delivery for deep-hole and high-speed applications
• Right-hand spiral flute geometry promotes efficient chip evacuation
• Built to DIN 6537 specification with tight diameter tolerance of +0.00016 to +0.00063 inches

Compatibility

Designed for use in rigid CNC and manual drilling setups accepting a straight-cylindrical shank. Fits standard chucks and collets sized for an 8.00 mm shank diameter. Part of the SGS Series 142P jobber drill line covering the 6.00 mm to 7.00 mm diameter range.

Installation Notes

This drill bit is installed by machinists or tooling technicians in a machine tool spindle using an appropriate collet, chuck, or toolholder rated for the shank diameter. Ensure the machine spindle and workpiece are properly secured before operation. Verify coolant-through compatibility with the spindle and toolholder before engaging internal coolant flow. Inspect the cutting edge for chips or wear before each use and replace when dimensional accuracy or surface finish degrades.