Kennametal 4150229 Carbide Drill Bit 6.30mm 140 Deg

Product Description

The KENNAMETAL 4150229 is a screw machine length (stub length) drill bit designed for high-performance drilling in metalworking and machining applications. Built from solid carbide with a multilayer TiAlN coating at the tip, it delivers excellent wear resistance and heat tolerance at elevated cutting speeds. The 140-degree split point reduces thrust and helps the bit self-center without a pilot hole. With an overall length of 79.00 mm (3.1102 inches) and a 6.30 mm cutting diameter, this bit fits standard machining center toolholders and CNC drill presses. Installation and operation are handled by machinists and CNC operators in production and job-shop environments.

This drill bit is suited for short-hole drilling in steel, cast iron, stainless steel, and similar ferrous materials where a stub-length tool provides rigidity and reduced deflection. The 3xD flute-to-diameter ratio and tapered web design support chip evacuation in moderate-depth holes. It is a common choice for high-volume production drilling where tool life and hole accuracy are priorities. The straight cylindrical shank accepts standard drill chucks and collet holders sized for an 8.00 mm (0.3150 inch) shank.

Key Features

• Solid carbide construction for superior rigidity and wear resistance compared to HSS tooling
• TiAlN tip coating extends tool life in ferrous and hardened material applications
• 140-degree point angle reduces entry thrust and improves self-centering
• Tapered web configuration supports chip evacuation and reduces heat buildup at the cutting edge
• Stub (screw machine) length body maximizes stiffness and minimizes deflection in CNC setups
• Straight cylindrical shank compatible with standard collet chucks and drill chucks

Compatibility

Designed as an OEM-style replacement or standard tooling option within the KENNAMETAL B041A-CPG series. Fits standard drill chucks and collet systems accepting an 8.00 mm straight cylindrical shank.

Installation Notes

This bit should be installed and operated by qualified machinists following standard CNC or manual machine tooling procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify collet or chuck runout is within acceptable tolerance before drilling to protect the solid carbide body from fracture due to lateral loading. Do not use this bit in hand-held drill applications; carbide tooling requires rigid machine setups to prevent breakage.