Cleveland C70152 Cobalt Jobber Drill Bit Wire 19 135

Product Description

The CLEVELAND C70152 is a cobalt jobber-length drill bit designed for high-performance drilling in demanding trade and production environments. Built from M42 cobalt high-speed steel and finished with a gold oxide coating, this bit delivers increased heat resistance and extended tool life compared to standard HSS bits. It features a 135-degree split point for fast penetration and reduced walking on entry, and a regular spiral flute for efficient chip evacuation. The straight-cylindrical shank measures 0.1660 inches in diameter, matching the wire size 19 designation at 0.1660 inches. Overall length is 3.25 inches. Machinists, millwrights, and maintenance technicians install this bit in standard drill presses, CNC machines, and hand drills.

This bit is suited for drilling aluminum and other non-ferrous metals where heat buildup can degrade standard HSS tooling. The NAS 907 Type J specification makes it appropriate for aerospace-adjacent maintenance and production work. With a flute length of 2.125 inches and a shank length of 1.125 inches, it fits jobber-length tool holders and drill chucks across light and heavy industrial settings. The two-flute spiral design clears chips cleanly in through-hole drilling applications, reducing the risk of chip packing in softer materials like aluminum.

Key Features

• M42 cobalt HSS construction provides superior heat and wear resistance over standard M2 HSS
• 135-degree split point reduces thrust force and minimizes bit walking on entry
• Gold oxide coating adds lubricity and helps extend cutting edge life
• Web-thinned tapered web reduces cutting resistance and improves chip flow
• NAS 907 Type J specification for use in controlled-tolerance production environments
• Right-hand cut, regular spiral flute with straight-cylindrical shank for broad chuck compatibility

Compatibility

The C70152 is a Series 2213 jobber-length drill bit in wire size 19 (0.1660 inches), falling within the 0.1500 to 0.2000 inch diameter range. It is intended for use in standard drill chucks and tool holders accepting straight-cylindrical shanks at 0.1660 inches diameter. Primary workpiece material is aluminum, though the M42 cobalt grade is suitable for a range of non-ferrous and ferrous materials in heavy-duty drilling applications.

Installation Notes

Install this bit in a clean, properly sized drill chuck and tighten securely before use. Machinists and maintenance technicians should ensure the workpiece is clamped or fixtured to prevent movement during drilling. Coolant-through is not supported on this bit; use external cutting fluid when drilling ferrous materials or at elevated spindle speeds to manage heat. Inspect the cutting edges before each use and replace the bit if chipping or dulling is observed to maintain hole tolerance.