Kennametal 4151761 Taper Length Drill Bit Wire 32 Carbide

Product Description

The KENNAMETAL 4151761 is a taper length drill bit in the B053A-CPG series, designed for precision drilling in demanding industrial and metalworking applications. Built from solid carbide with a multilayer TiAlN coating and a 140-degree split point, this bit delivers clean entry and high wear resistance across ferrous and non-ferrous materials. At 0.1160 inches (wire size 32) in diameter, it is engineered to tight tolerances of -0.0006 to 0.0000 inches. The straight cylindrical shank measures 0.1575 inches in diameter, and the overall length is 2.598 inches (66 mm). Installation and setup are performed by machinists and tool-and-die professionals in CNC and manual drill press environments.

This drill bit is suited for precision drilling in production machining, tool rooms, and fabrication shops where tight hole tolerances and consistent finish are required. The 8xD flute-length-to-diameter ratio supports deeper drilling relative to diameter, making it well-suited for through-hole work in materials such as hardened steel, stainless, and high-temperature alloys. The coolant-through design allows cutting fluid to reach the tip directly, helping clear chips and manage heat during extended cuts. Maximum drilling depth is 0.9843 inches (25 mm).

Key Features

• Solid carbide construction with multilayer TiAlN coating for extended tool life in hard and abrasive materials
• 140-degree standard point geometry for self-centering entry and reduced thrust force
• Coolant-through capability delivers fluid directly to the cutting zone for chip evacuation and heat control
• 8xD flute length-to-diameter ratio supports deeper holes relative to bit diameter
• Tapered web configuration (DIN 6537K) maintains core strength through the flute length
• Right-hand spiral flute with regular helix for consistent chip flow in standard drilling operations

Compatibility

Designed as an OEM-style solid carbide taper length drill for precision machining applications requiring a wire size 32 (0.1160 inch) diameter straight-shank drill conforming to DIN 6537K standards.

Installation Notes

This drill bit is installed and serviced by machinists in CNC machining centers or manual drill presses equipped with appropriate collet or drill chuck systems accepting a 0.1575-inch straight cylindrical shank. Power down and de-energize the machine before changing tooling. When using the coolant-through feature, verify that the machine spindle coolant circuit is connected and operating at the correct pressure before beginning the cut. Do not exceed the maximum drilling depth of 0.9843 inches without retracting to clear chips.