Cleveland C70118 Cobalt Jobber Drill Bit 7.8 Mm

Product Description

The CLEVELAND C70118 is a cobalt jobber length drill bit designed for high-performance drilling in metal and other demanding materials. Built to M42 cobalt steel grade, this bit features a 135-degree split point that reduces walking and allows faster penetration with less feed pressure. The gold oxide coating helps resist heat buildup during extended runs. At 4.61 inches overall length with a 2.953-inch flute, it fits standard drill chucks and drill presses used in fabrication, maintenance, and metalworking operations. Machinists, millwrights, and general maintenance technicians are the primary users of this bit.

This drill bit is suited for drilling aluminum as its primary workpiece material, as noted in the manufacturer specifications, though its heavy-duty grade and cobalt construction make it capable in a range of ferrous and non-ferrous applications. The Series 2213 designation places it within a consistent family of jobber-length bits for production and job-shop environments. The straight-cylindrical shank accepts standard three-jaw drill chucks without modification, making it easy to deploy in both handheld and machine-mounted setups.

Key Features

• M42 cobalt steel construction for heat and wear resistance
• 135-degree split point reduces drill walking and lowers required feed force
• Gold oxide coating provides thermal protection during high-speed drilling
• Web-thinned, tapered web configuration improves chip evacuation
• Right-hand spiral flute with regular helix for consistent chip clearance
• Meets NAS 907 Type J specification for controlled dimensional tolerances

Compatibility

Designed as a jobber-length replacement or production drill bit for use in standard three-jaw drill chucks and CNC drilling setups that accept a 0.3071-inch straight-cylindrical shank.

Installation Notes

Install in a properly rated drill press, CNC machine, or handheld drill with a chuck rated for the shank diameter before beginning any drilling operation. Ensure the workpiece is securely clamped before applying feed pressure. Use appropriate cutting fluid or coolant when drilling ferrous materials to extend bit life, noting that this bit does not support coolant-through delivery. Inspect the cutting edges for wear before each use and replace the bit if chipping or edge rollover is observed.