Hertel 4140182 Cobalt Jobber Drill Bit Wire 26 Tialn

Product Description

The HERTEL 4140182 is a cobalt jobber-length drill bit in wire gauge size 26, with a decimal diameter of 0.1470 inches. It features a 135-degree split point for fast, self-centering engagement without a center punch and a TiAlN coating that extends tool life in demanding materials. At 3 inches overall length with a 1.875-inch flute length, this bit is built for holemaking in ferrous metals, stainless steel, and high-strength alloys. The straight-cylindrical shank seats securely in standard drill chucks and collets. Graded heavy duty, it is suited for production and maintenance environments where bit longevity and precision hole tolerance matter.

This bit is designed for general holemaking in metalworking applications including HVAC fabrication, plumbing rough-in, electrical panel work, and mechanical installation where drilling into hardened or abrasive ferrous materials is routine. The right-hand spiral flute with regular helix evacuates chips efficiently during through-hole and blind-hole drilling. Web thinning reduces thrust load and improves penetration in harder stock. A single bit is packaged per unit, making it practical to stock individually or in multiples for a service van or shop inventory.

Key Features

• Wire size 26 (0.1470 inches) straight-cylindrical shank fits standard chucks and collets
• 135-degree split point starts on contact without center punching and reduces walking
• TiAlN coating increases surface hardness and heat resistance for longer tool life in ferrous materials
• Cobalt construction resists softening at elevated cutting temperatures compared to standard HSS
• Web-thinned tapered web reduces cutting thrust and improves penetration in hard stock
• Heavy-duty grade rating suited for production holemaking and repeated use in tough alloys

Compatibility

Designed as an OEM-style jobber-length drill bit for use in standard 3-jaw drill chucks, keyed chucks, and collet holders accepting a 0.1470-inch straight-cylindrical shank, compatible with handheld drills, drill presses, and CNC spindles in that shank range.

Installation Notes

Installation is performed by machinists, maintenance technicians, and trade professionals using standard drill equipment. Secure the shank fully in the chuck before operation and verify concentricity to avoid premature wear. Use cutting fluid or coolant appropriate to the workpiece material when drilling stainless or hardened alloys, even though this bit does not support through-coolant delivery. Replace the bit at the first sign of chatter, oversized hole diameter, or discoloration at the tip indicating heat damage.