Sgs 66553 Solid Carbide Jobber Drill Bit 8mm 135 Deg

Product Description

The SGS 66553 is a solid carbide jobber length drill bit designed for high-performance drilling in demanding machining applications. Built to DIN 6537 specification, it features a 135-degree split point, a right-hand spiral flute, and a proprietary Ti-NAMITE-X (TX) coating for extended tool life and heat resistance. The 8.00 mm diameter and straight cylindrical shank make it compatible with standard drill chucks and tool holders. With micrograin carbide construction and a web-thinned point, this bit delivers clean entry, reduced thrust force, and consistent hole geometry in ferrous and non-ferrous materials. It is intended for use by machinists, tool-and-die professionals, and precision fabricators.

The SGS 66553 is suited for production drilling in CNC machining centers and manual drill presses where tight diameter tolerances and long tool life are required. The through-coolant design supports high-speed cutting in difficult materials by delivering coolant directly to the cutting edge. With a flute-to-diameter ratio of 5xD and a maximum drilling depth of 35.00 mm (1.378 inches), it handles moderate-depth holes in a single pass without pecking cycles in many applications. Series 142P positions it as a general-purpose yet high-performance solution for shops running precision hole work.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance in high-cycle production work
• Ti-NAMITE-X (TX) proprietary coating reduces friction and extends tool life at elevated cutting speeds
• 135-degree web-thinned split point reduces entry thrust and improves self-centering without a pilot hole
• Through-coolant capable design delivers cutting fluid directly to the drill tip for deep-hole temperature control
• DIN 6537 specification ensures dimensional conformance for interchangeable tooling setups
• Diameter tolerance of +0.00016 to +0.00063 inches supports tight-tolerance hole requirements

Compatibility

Designed as an OEM-style replacement and standard production drill bit for CNC machining centers, drill presses, and multi-spindle setups requiring an 8.00 mm straight-shank jobber length carbide drill conforming to DIN 6537.

Installation Notes

Installation should be performed by a qualified machinist familiar with carbide tooling handling requirements. Power down and lock out the machine spindle before loading or changing the drill bit. Carbide is brittle — avoid impact during handling and do not use this bit in a hammer or impact-style drilling mode. Verify chuck or collet runout is within acceptable limits before use, as excessive runout will accelerate chipping and premature failure.