Cleveland C11442 Jobber Drill Bit No. 42 Cobalt Tialn

Product Description

The CLEVELAND C11442 is a cobalt jobber-length drill bit in wire gauge size No. 42 (0.0935 inches diameter), built for drilling into hard and abrasion-resistant materials. Manufactured from M42 cobalt high-speed steel and finished with a TiAlN coating, it handles elevated cutting temperatures better than standard HSS bits. The 135-degree split point reduces walking on entry and lowers required feed pressure. Overall length is 2.25 inches with a 1.25-inch parabolic flute. Right-hand cut with a straight-cylindrical shank. This bit is intended for use by machinists, toolmakers, and maintenance technicians working with stainless steel, titanium, cast iron, and other hard alloys.

The C11442 is suited for precision drilling applications in metalworking, maintenance, and fabrication environments where small-diameter holes in tough materials are required. The parabolic flute geometry improves chip evacuation in deep-hole drilling and reduces chip packing. The TiAlN coating extends tool life in dry or minimum-quantity-lubrication cutting conditions. This bit fits standard drill chucks accepting a straight-cylindrical shank at 0.0935 inches diameter. Typical applications include instrument work, sheet metal, and close-tolerance hole production in hard or work-hardening materials.

Key Features

• M42 cobalt HSS construction for heat resistance in hard-material drilling
• TiAlN coating extends cutting life in dry and MQL operations
• 135-degree split point minimizes walking and reduces entry force
• Parabolic flute profile improves chip evacuation and reduces clogging in deep holes
• Web-thinned, tapered web configuration for reduced thrust requirements
• Straight-cylindrical shank fits standard drill chucks and collets
• Diameter tolerance of -0.0005 to 0.0000 inches for close-fit hole production

Compatibility

Designed as a direct-fit jobber-length drill bit for any standard drill press, CNC machining center, or hand drill accepting a 0.0935-inch straight-cylindrical shank. Conforms to ANSI specification for jobber-length geometry.

Installation Notes

Installation is performed by machinists or maintenance technicians familiar with rotating cutting tools. Secure the shank fully in a properly sized drill chuck or collet and verify runout before cutting. Ensure the workpiece is firmly clamped before drilling. Use appropriate cutting fluid or MQL when drilling stainless steel or titanium to extend tool life, even though the TiAlN coating supports dry cutting in many applications.