Kennametal 4151756 Taper Length Drill Bit 7/64 Inch

Product Description

The KENNAMETAL 4151756 is a solid carbide taper length drill bit in the B053A-CPG series, designed for high-performance drilling in demanding production environments. The bit features a multilayer PVD TiAlN coating applied over a TiN base layer, which extends tool life and maintains cutting edge integrity at elevated temperatures. At 7/64 inch (0.1094 inch) diameter with a 140-degree point angle, this drill is optimized for clean entry and accurate hole positioning. Coolant-through capability supports chip evacuation and thermal management during deep-hole operations. This tool is installed by machinists and CNC operators working in metalworking, aerospace, die-and-mold, and precision manufacturing applications.

The 4151756 is suited for drilling in ferrous and non-ferrous metals where tight tolerances and extended tool life are required. The straight cylindrical shank fits standard ER collets and drill chucks on CNC machining centers, drill presses, and multi-spindle equipment. With an 8xD flute-to-diameter ratio, this bit handles depth-to-diameter demands that exceed standard jobber-length tooling. The tapered web configuration supports rigidity while reducing thrust requirements at the cutting edge.

Key Features

• Solid carbide substrate in material grade KC7325 provides wear resistance in hard and abrasive materials
• Multilayer PVD TiN/TiAlN coating extends tool life under high-speed cutting conditions
• 140-degree point angle reduces thrust and improves self-centering on entry
• Coolant-through design supports chip evacuation in deep-hole drilling
• 8xD flute length-to-diameter ratio allows drilling beyond standard jobber reach
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed as a direct-fit replacement for applications requiring a B053A-CPG series taper length drill at 7/64 inch diameter with a straight cylindrical shank. Compatible with ER collet systems and standard drill chucks sized to accept a 0.1575 inch (4.00 mm) shank diameter.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before changing tooling. Ensure the shank seat and collet or chuck bore are clean and free of chips before seating the drill. Verify coolant-through passages are clear and system pressure is appropriate for the tool before initiating a cut.