Cleveland C70133 Jobber Drill Bit 13mm Cobalt 135 Deg

Product Description

The CLEVELAND C70133 is a cobalt jobber length drill bit designed for heavy-duty metal drilling applications. Built from M42 cobalt high-speed steel with a gold oxide coating, it delivers extended tool life and heat resistance when drilling hard or abrasive materials. The bit measures 13 mm (0.5118 inches) in diameter with an overall length of 5.94 inches and a flute length of 3.976 inches. The 135-degree split point reduces walking on entry and lowers thrust requirements, making it well suited for production and maintenance drilling environments where precision and efficiency matter. Meets NAS 907 Type J standards.

This drill bit is intended for use in ferrous and non-ferrous metals, with aluminum listed as the primary workpiece material. It fits standard drill chucks via its straight-cylindrical shank with a shank diameter of 0.5118 inches and a shank length of 1.9685 inches. The regular spiral flute with web-thinned, tapered web geometry promotes efficient chip evacuation during through-hole drilling. It is appropriate for use in hand drills, drill presses, and CNC drilling setups where jobber length reach is sufficient.

Key Features

• M42 cobalt HSS construction for heat resistance and extended tool life in hard materials
• 135-degree split point reduces drill walking and decreases entry thrust
• Gold oxide coating provides lubricity and added surface protection
• Web-thinned tapered web improves chip flow and reduces cutting torque
• Straight-cylindrical shank fits standard 3-jaw drill chucks without adapters
• Meets NAS 907 Type J specification for heavy-duty drilling applications

Compatibility

Designed as a heavy-duty OEM-style jobber length drill bit suited for use in standard drill chucks accepting 0.5118-inch straight-cylindrical shanks, within the Series 2213 drill bit family covering the 0.5000 to 0.6500 inch (12.50 to 15.00 mm) size range.

Installation Notes

Secure the shank fully in a properly sized drill chuck before operation and verify the chuck is tightened with the appropriate key. Power down or de-energize any machine tool before bit changes. Use appropriate cutting fluid or lubricant when drilling metals to maximize bit life and maintain dimensional accuracy. Wear appropriate PPE including eye protection when operating drill equipment.