Kennametal 4149737 Taper Length Drill Bit 13/32 in

Product Description

The KENNAMETAL 4149737 is a taper length drill bit from the B053A-CPG series, designed for precision drilling in demanding metalworking and machining applications. Built from solid carbide with a multilayer TiAlN coating, it delivers high wear resistance and thermal stability at elevated cutting speeds. The 140-degree standard point geometry reduces thrust force and improves centering accuracy. At 13/32 inch (0.4062 inch) diameter with a flute length of 3.70 inches and an overall length of 5.55 inches, this drill suits through-coolant setups where chip evacuation and tool life are critical priorities. It is typically installed by machinists and tool-and-die professionals in CNC drilling operations.

This drill bit is suited for high-speed CNC machining centers and drilling operations requiring tight tolerances and extended reach. The 8xD flute-to-diameter ratio supports deeper drilling passes while maintaining rigidity. The straight cylindrical shank provides secure chuck or collet retention. Through-coolant capability makes it well matched to operations in hardened steels, stainless alloys, cast iron, and similar difficult-to-machine materials where heat management and chip flushing are essential to hole quality and tool longevity.

Key Features

• Solid carbide construction in material grade KC7325 for extended tool life in hard and abrasive workpiece materials
• Multilayer TiAlN coating enhances heat resistance and reduces built-up edge at high surface speeds
• 140-degree standard point angle for reduced thrust and improved self-centering on entry
• Through-coolant capable design supports chip flushing and thermal control during deep-hole drilling
• 8xD flute length-to-diameter ratio allows drilling depths up to 3.11 inches (79 mm) in a single pass
• Right-hand spiral flute with tapered web configuration per DIN 6537K specification

Compatibility

Designed as an OEM-style replacement and standard tooling option within the KENNAMETAL B053A-CPG series for CNC machining centers and drilling fixtures accepting a straight cylindrical shank with a 0.4724 inch shank diameter.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Secure the straight shank in a compatible collet or drill chuck rated for the shank diameter before engaging coolant supply lines if through-coolant operation is intended. Verify spindle speed and feed rate parameters against the workpiece material and machine capability before commencing drilling. Always power down and lock out the machine spindle before changing or inspecting the drill bit.