Cleveland C12286 Taper Shank Drill Bit 1-5/16 in 4MT Hss

Product Description

The CLEVELAND C12286 is a taper shank drill bit engineered for heavy-duty drilling in metal fabrication, machining, and industrial maintenance applications. Built from high-speed steel with an oxide finish, it measures 1.3125 inches (1-5/16 inches) in diameter and delivers a 118-degree standard point angle with a web-thinned tip for easier penetration and reduced thrust. At 14.25 inches overall length with an 8.625-inch spiral flute, the C12286 is sized for use in drill presses, lathes, milling machines, and other machine tool spindles that accept a 4MT (Morse Taper 4) shank. It cuts right-hand with a regular spiral and is rated for general-purpose use across a broad range of ferrous and non-ferrous materials.

The C12286 is suited for production and job-shop environments where large-diameter hole-making is required in steel, cast iron, aluminum, and similar materials. The 4MT taper shank seats directly into compatible machine spindles without a separate chuck, making it appropriate for drill press and lathe work where rigidity and runout control are critical. It conforms to ASME B94.11M standards, making it a straightforward drop-in selection for shops sourcing to standard tooling specifications. Machinists, tool-and-die makers, and maintenance mechanics are the typical end users.

Key Features

• 1-5/16 inches (1.3125 inches) diameter with a diameter tolerance of +0.0000 to -0.0015 inches
• 4MT (Morse Taper 4) taper shank for direct spindle mounting
• 118-degree standard point angle with web-thinned tip for reduced entry thrust
• High-speed steel construction with oxide finish for general-purpose durability
• 8.625-inch spiral flute length, 14.25 inches overall length
• Right-hand cutting, regular spiral, no coolant-through — Series 2410, ASME B94.11M compliant

Compatibility

Designed for use in machine tool spindles, drill presses, and lathes accepting a No. 4 Morse Taper (4MT) socket. Conforms to ASME B94.11M dimensional standards.

Installation Notes

Installation is performed by machinists or qualified machine operators. Power down and lock out the machine before seating or removing the taper shank. Clean both the shank and the spindle socket thoroughly before insertion to ensure full taper contact and prevent runout. Never use a hammer directly on the shank — use a proper drift and drift slot to seat and eject the bit safely.