Cleveland C14591 Cobalt Drill Bit No. 22 0.1570 in

Product Description

The CLEVELAND C14591 is a screw machine length drill bit designed for fast, accurate drilling in demanding shop and field applications. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention when cutting hard and abrasive materials. The 135-degree split point reduces walking and requires no center punch on most surfaces. At 2.125 inches overall length, the short-flute screw machine geometry provides added rigidity, making it well suited for CNC machine tools, drill presses, and production drilling setups where deflection must be minimized.

This bit is intended for use in metalworking applications involving alloy steel and aluminum. The screw machine length format is common in production environments where short, rigid tooling improves hole accuracy and reduces chatter. Licensed machinists, tool-and-die technicians, and maintenance mechanics will find this bit appropriate for high-cycle drilling operations on ferrous and non-ferrous workpiece materials. The Series 2133 designation places it within a heavy-duty cobalt drill line built to ASME B94.11M and DIN 1897 standards.

Key Features

• M42 cobalt construction provides superior heat and wear resistance compared to standard HSS
• 135-degree split point reduces thrust force and eliminates center-punch requirements on most materials
• Web-thinned, parallel web configuration improves chip evacuation and cutting efficiency
• Screw machine length (2.125 inches OAL) adds rigidity for precision, high-cycle drilling
• Right-hand cut with 2-flute regular spiral geometry for general metalworking use
• Diameter tolerance held to +0.0000 to -0.0007 inches for consistent hole sizing

Compatibility

Designed as an OEM-style replacement and standard production drill bit for use with 3-jaw drill chucks and straight-shank collet holders accepting a 0.1570-inch straight-cylindrical shank, suitable for drill presses, CNC machining centers, and hand-held drill motors used in alloy and aluminum machining.

Installation Notes

Installation is performed by machinists or maintenance technicians familiar with rotating cutting tools. Secure the straight-cylindrical shank fully in a compatible chuck or collet before operation and verify runout with a dial indicator when precision is critical. Always power down and lock out the machine spindle before changing tooling. Do not exceed the recommended speed and feed range for the workpiece material and drill diameter.