Hertel C.402.1140 Jobber Drill 11.40mm Hss Oxide

Product Description

The HERTEL C.402.1140 is a high speed steel jobber drill designed for general-purpose hole-making in metal, wood, and plastic. The drill measures 11.40 mm (0.4488 inches) in diameter with a standard 118-degree split point for accurate starting and reduced walking. An oxide coating improves lubricity and surface hardness, extending tool life in production and maintenance drilling applications. Overall length is 143 mm with a 106 mm flute length, giving this drill sufficient reach for most jobber-depth holes. The straight-cylindrical shank fits standard drill chucks without adapters. Right-hand cutting direction is the industry default for conventional drilling operations.

This jobber drill is suited for use in machine shops, maintenance and repair facilities, and fabrication environments where general-purpose drilling in the 10 mm to 12.50 mm size range is required. It is appropriate for use in bench drill presses, radial arm drills, CNC machining centers, and hand-held power drills with compatible chuck capacity. The two-flute spiral design provides efficient chip evacuation in most common workpiece materials.

Key Features

• 11.40 mm (0.4488 inch) diameter for precise sizing in the 10 mm to 12.50 mm range
• 118-degree standard point angle for general-purpose drilling in a wide range of materials
• High speed steel construction provides toughness and re-sharpenability
• Oxide coating improves lubricity and reduces heat buildup at the cutting edge
• Two-flute spiral design promotes effective chip removal during drilling
• Straight-cylindrical shank fits standard drill chucks without a reducing sleeve or adapter

Compatibility

Designed as a general-purpose jobber drill compatible with any drill press, machining center, or hand-held drill with a chuck capacity that accepts straight-cylindrical shanks in the 11.40 mm range.

Installation Notes

Installation and use of this drill should be performed by a qualified machinist or trained tradesperson. Secure the workpiece properly before drilling and confirm chuck jaws are fully tightened on the shank before operation. Do not exceed the recommended spindle speed for the workpiece material and drill diameter. Coolant through is not supported on this drill; apply cutting fluid externally when drilling ferrous materials to manage heat.