Cleveland C70155 Jobber Drill Bit Wire 22 Cobalt 135 Deg

Product Description

The CLEVELAND C70155 is a cobalt jobber length drill bit designed for heavy-duty metal drilling applications. It carries a wire gauge size of 22, equivalent to 0.1570 inches in diameter, and features a 135-degree split point for fast penetration and reduced walking on entry. The gold oxide coating provides heat resistance and extends tool life during high-speed drilling. Built to M42 cobalt steel grade, this bit delivers the hardness and toughness required when working with aluminum, stainless, and other demanding workpiece materials. It is suited for machinists, maintenance technicians, and fabricators who need a reliable, production-grade bit that meets NAS 907 Type J standards.

The C70155 is appropriate for use in CNC machines, drill presses, and handheld power drills where a straight-cylindrical shank is accepted. Its primary rated workpiece material is aluminum, though the M42 cobalt construction handles harder alloys as well. The 2-inch spiral flute length and 3.125-inch overall length place it in standard jobber proportions, making it a direct fit in most drill chucks and tool holders that accept a 0.1570-inch shank. This bit is sold individually and is well-suited for both shop environments and field maintenance work.

Key Features

• Wire size 22 diameter — 0.1570 inches — with tight tolerance of -0.0007 to 0.0000 inches
• M42 cobalt steel construction rated for heavy-duty drilling in aluminum and similar materials
• 135-degree split point reduces thrust and self-centers without a center punch
• Gold oxide coating resists heat buildup and extends cutting edge life
• Web-thinned, tapered web design reduces cutting resistance and improves chip evacuation
• Meets NAS 907 Type J specification for consistent dimensional and material standards
• Regular spiral, 2-flute configuration suits general-purpose jobber drilling

Compatibility

Designed as an OEM-style replacement or direct-use jobber drill bit for any application requiring a straight-cylindrical shank bit at 0.1570 inches diameter, conforming to NAS 907 Type J and Series 2213 specifications.

Installation Notes

Install and remove drill bits only after the drill press or power tool has been fully powered down and secured. Confirm the chuck or collet is rated for a 0.1570-inch straight-cylindrical shank before seating the bit. Use appropriate cutting fluid or coolant as required by the workpiece material to preserve coating integrity and edge life. Disposal of worn cobalt tooling should follow applicable shop safety and material handling procedures.