Cleveland C15896 Jobber Drill Bit 47 Cobalt 135 Degree

Product Description

The CLEVELAND C15896 is a cobalt jobber length drill bit sized to wire gauge number 47, with a decimal diameter of 0.0785 inches. Manufactured from M42 cobalt high-speed steel and finished with an oxide coating, this bit is built for heavy-duty drilling in hard and abrasive materials. It features a 135-degree split point for fast penetration and reduced walking on entry, a fast spiral flute design for efficient chip evacuation, and a web-thinned, tapered web construction that lowers thrust requirements. Overall length is 2 inches with a flute length of 11/16 inches. Licensed machinists, tool-and-die makers, and maintenance technicians typically specify this bit when working in demanding production or MRO environments.

This bit is designed for drilling superalloys and other hard metals where standard high-speed steel bits wear prematurely. The Series 3780 design conforms to ASME B94.11M standards and carries a NAS specification designation, making it appropriate for aerospace, defense, and precision manufacturing applications. The straight-cylindrical shank fits standard drill chucks without adapters, and the right-hand cut suits conventional drill press and hand-drill setups. It is sold individually but requires a minimum order quantity of 10 units.

Key Features

• M42 cobalt steel construction for extended tool life in superalloy and hard-metal drilling
• 135-degree split point reduces walking and lowers entry thrust
• Oxide coating improves lubricity and heat resistance during dry or lightly lubricated drilling
• Fast spiral flute promotes aggressive chip evacuation in deep-hole applications
• Web-thinned, tapered web reduces cutting resistance and heat buildup at the tip
• Conforms to ASME B94.11M and NAS specification designation

Compatibility

Designed as a heavy-duty OEM-style replacement or production drill bit for applications requiring wire gauge number 47 diameter in superalloy, stainless, and other high-strength metal workpieces.

Installation Notes

Install in a standard drill chuck sized to accept a 0.0785-inch straight-cylindrical shank and verify chuck jaw concentricity before use to prevent premature tip breakage on small-diameter bits. Secure the workpiece firmly before drilling; unsupported material at this diameter can deflect and snap the bit. Apply appropriate cutting fluid or coolant when drilling superalloys to manage heat, even though the bit does not support coolant-through delivery. Inspect the split point for chipping before each use, as cobalt bits at this diameter are brittle and sensitive to side-loading.