Sandvik Coromant 5747378 Jobber Drill 5.40 Mm Solid Carbide

Product Description

The SANDVIK COROMANT 5747378 is a solid carbide jobber drill in the R840 series, designed for high-performance drilling across a wide range of workpiece materials. The drill measures 5.40 mm in diameter with a 140-degree self-centering point and a TiAlN coating that extends tool life under demanding conditions. Overall length is 3.2283 inches, with a 1.7323-inch flute length and a 6.00 mm straight-cylindrical shank conforming to DIN 6535HA. Internal coolant-through capability supports chip evacuation and heat control during deep-hole operations. This is a two-flute, right-hand cutting tool built from micrograin carbide stock for machinists and toolroom professionals working in production environments.

The R840 series drill is suited for drilling operations in steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium — ISO material groups P, M, K, N, and S. The 7xD flute-to-diameter ratio provides the reach needed for moderately deep holes without requiring a stub-length tool. The self-centering 140-degree point reduces the need for a center drill or spot drill in many setups, making it a practical choice for CNC machining centers and drill presses running through-coolant programs.

Key Features

• 5.40 mm diameter solid micrograin carbide construction for rigidity and wear resistance
• 140-degree self-centering point reduces setup steps on CNC and manual equipment
• TiAlN coating improves heat resistance and extends cutting life in ferrous and exotic alloys
• Internal coolant-through design supports chip evacuation at 7xD drilling depths
• Two-flute spiral geometry with right-hand cutting direction
• DIN 6535HA shank specification ensures consistent toolholder fit

Compatibility

Rated for use in ISO material groups P (steel), M (stainless steel), K (cast iron), N (non-ferrous metals), and S (superalloys and titanium). Fits standard straight-bore toolholders and collet chucks accepting a 6.00 mm shank diameter per DIN 6535HA.

Installation Notes

Installation and tool changes must be performed with the spindle fully stopped and machine power isolated per standard shop safety practice. Seat the shank fully in a collet or drill chuck rated for the shank diameter before tightening. Connect through-coolant supply before initiating the drilling cycle to ensure proper chip flushing and thermal management. Verify runout with a dial indicator after clamping, as excessive runout accelerates wear and reduces hole-diameter accuracy.