Cleveland C12181 Taper Shank Drill Bit 31/64 in 2MT Hss

Product Description

The CLEVELAND C12181 is a taper shank twist drill bit designed for drilling operations in metal fabrication, machine shops, and general industrial applications. It features a 31/64-inch diameter (0.4844 inches decimal), a No. 2 Morse taper shank for secure seating in compatible spindles and drill presses, and a 118-degree standard point angle with web thinning for easier penetration and reduced thrust. Constructed from high-speed steel with an oxide finish, this bit is built for general-purpose cutting in ferrous and non-ferrous materials. Installation and use are typically handled by machinists, tool-and-die tradespeople, and maintenance mechanics.

This drill bit is suited for right-hand, general-purpose drilling in production and maintenance environments. The spiral flute design promotes efficient chip evacuation during through-hole and blind-hole operations. With a flute length of 4.375 inches and an overall length of 8.25 inches, it provides the reach needed for deeper hole applications on drill presses, lathes, and milling machines equipped with No. 2 Morse taper spindles. It is manufactured to ASME B94.11M standards, making it appropriate for precision work where dimensional consistency is required.

Key Features

• 31/64-inch diameter (0.4844 inches) with a tight diameter tolerance of +0.0000 to -0.0010 inches
• No. 2 Morse taper shank for positive, self-holding fit in compatible spindles
• 118-degree standard point angle with web thinning to reduce entry thrust
• High-speed steel construction with oxide finish for general-purpose durability
• Right-hand spiral flute promotes efficient chip removal during drilling
• Manufactured to ASME B94.11M dimensional standards

Compatibility

Designed for use in drill presses, lathes, and milling machines equipped with a No. 2 Morse taper spindle or sleeve. Compatible with standard 2MT drill chucks and arbors used in general machine shop setups.

Installation Notes

Taper shank drill bits are installed by machinists and tool operators. Ensure the spindle and taper shank are clean and free of debris before seating to guarantee proper contact and concentricity. Power down and lock out the machine before inserting or removing the bit. A drift key and drift slot should be used to eject the bit from the spindle - never use excessive force that could damage the taper surfaces.