Kennametal 4151758 Taper Length Drill Bit No.34 Carbide

Product Description

The KENNAMETAL 4151758 is a taper length drill bit from the B053A-CPG series, designed for precision drilling in demanding machining applications. Built from solid carbide in material grade KC7325 and coated with a multilayer TiAlN finish, this bit delivers high wear resistance and thermal stability at elevated cutting speeds. The 140-degree standard point geometry reduces thrust force and improves centering accuracy. With a flute length-to-diameter ratio of 8xD and coolant-through capability, it is well suited for deep-hole drilling operations in production environments. Machinists and CNC operators working in aerospace, automotive, or general metalworking will find this drill optimized for consistent, repeatable performance.

The 4151758 is sized at 0.1110 inches (No. 34 wire size) with a straight cylindrical shank diameter of 0.1575 inches. Its 30 mm (1.1811 inch) flute length and 66 mm (2.598 inch) overall length make it appropriate for use in CNC machining centers, drill presses, and multi-axis equipment requiring a compact taper length format. The maximum drilling depth is 25 mm (0.9843 inches). The right-hand spiral flute configuration with a tapered web promotes efficient chip evacuation in ferrous and non-ferrous materials. This drill conforms to DIN 6537K specification.

Key Features

• Solid carbide construction in material grade KC7325 for high hardness and rigidity
• Multilayer TiAlN coating provides thermal and oxidation resistance during high-speed cutting
• 140-degree standard point angle improves self-centering and reduces exit burr
• Coolant-through design supports deep-hole drilling and chip flushing
• 8xD flute-to-diameter ratio allows drilling up to 25 mm depth
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed as an OEM-style replacement or production-grade option for applications requiring a No. 34 wire size taper length drill bit conforming to DIN 6537K in the B053A-CPG series.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the spindle and tool holder are clean and free of runout before seating the straight cylindrical shank. Confirm coolant-through lines are active before drilling if using the internal coolant feature. Follow machine tool manufacturer torque and collet specifications when securing the shank; do not exceed the rated drilling depth of 25 mm for this tool.