Seco 02897950 Carbide Jobber Drill Bit 1/2 Inch SD1105A

Product Description

The SECO 02897950 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding industrial and metalworking applications. It features a 1/2 inch cutting diameter, a 140-degree split-point tip for accurate entry and reduced thrust, and an AlCrN coating that extends tool life in abrasive and heat-generating cuts. The straight-cylindrical shank measures 14.00 mm (0.5512 inches) in diameter and seats securely in standard drill chucks and toolholders. With a 2-flute spiral geometry and 5xD flute-to-diameter ratio, this bit clears chips efficiently and maintains rigidity through the cut. It is installed and operated by machinists, tool-and-die professionals, and precision fabricators.

This drill bit is built for production and job-shop drilling in steel, stainless steel, cast iron, and other hard materials classified under ISO material groups P, M, K, and H. The SD1105A series is suited for CNC machining centers and manual drill press operations where consistent hole geometry and tight diameter tolerances are required. The m7 diameter tolerance on the cutting end supports accurate hole sizing without reaming in many applications. It is appropriate for through-hole and blind-hole drilling at depths up to 3-1/32 inches (77.00 mm) of flute engagement.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive workpiece materials
• AlCrN coating provides thermal and oxidation resistance, extending tool life in dry and semi-dry cutting
• 140-degree point angle reduces thrust and improves self-centering on entry
• 2-flute spiral geometry with 5xD ratio promotes efficient chip evacuation
• Straight-cylindrical shank compatible with standard ER collets and drill chucks
• m7 diameter tolerance supports accurate hole sizing in steel and cast iron
• No coolant-through design — suitable for external coolant or dry cutting setups

Compatibility

Part of the SECO SD1105A series, rated for drilling steel, stainless steel, cast iron, and hard materials (ISO groups P, M, K, H). Compatible with any machine spindle or toolholder accepting a 14.00 mm straight-cylindrical shank. Drill bit size range for this series is 0.5000 to 0.6500 decimal inch.

Installation Notes

Installation is performed by a machinist or toolroom technician. Secure the shank fully in the collet or chuck to the recommended grip depth before starting the spindle. Confirm the machine is powered off and the spindle is locked before changing or inspecting the bit. Do not use this bit in hand-held portable drills; it is intended for rigid machine-tool setups where runout is controlled.