Cleveland C14589 Screw Machine Drill Bit 23 Cobalt

Product Description

The CLEVELAND C14589 is a screw machine length drill bit designed for high-production drilling in demanding metalworking applications. Built from M42 cobalt high-speed steel, it delivers heat and wear resistance needed when cutting through alloy steels and aluminum. The 135-degree split point reduces walking and decreases the thrust required to start a hole, allowing for faster, cleaner entry without a center punch. At 2-1/16 inches overall length, this stub-length bit offers increased rigidity compared to jobber-length drills, reducing deflection in short, repetitive drilling cycles. Licensed machinists, tool-and-die techs, and CNC operators are the primary installers.

This bit is suited for screw machine work, turret lathe operations, and general production drilling in both manual and CNC setups. Wire size 23 corresponds to 0.1540 inches in decimal, placing it in the 0.1500 to 0.2000 inch diameter range. Its reduced overall length and straight cylindrical shank make it compatible with standard drill chucks, quick-change toolholders, and screw machine spindles. Primary workpiece materials include alloy steel and aluminum, making it a practical choice for job shops and production floors that run a range of ferrous and non-ferrous stock.

Key Features

• M42 cobalt construction for extended tool life in hard and abrasive materials
• 135-degree split point reduces thrust and eliminates bit walking on entry
• Web-thinned, parallel web design improves chip evacuation and cutting efficiency
• Screw machine (stub) length provides added rigidity and reduced deflection
• Right-hand cut with regular spiral and 2 spiral flutes for consistent chip flow
• Meets ASME B94.11M and DIN 1897 standards for dimensional accuracy

Compatibility

Designed for use in standard drill chucks and screw machine spindles that accept a 0.1540-inch straight cylindrical shank. Primary workpiece materials per manufacturer data are alloy steel and aluminum.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician familiar with cutting tool setup and speeds-and-feeds selection. Secure the shank fully in the chuck or toolholder before running the spindle. Do not exceed recommended cutting speeds for the workpiece material, and apply cutting fluid as appropriate for the material being drilled. Inspect the cutting edges before each use and replace the bit when wear causes increased thrust or degraded hole quality.