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Cylindrical carbide drill bit, silver-grey finish, 6.53mm diameter

Cobra Carbide

Cobra Carbide 54054 5xD Non-Coolant Drill 6.53mm .2570

SKU CH-C32A-SN6AR

5xD non-coolant drill with 6.53 mm diameter for high-performance drilling

  • Drills five diameters deep without coolant supply
  • 53 mm metric diameter matches .2570 inch equivalent
  • High-performance carbide construction resists wear in steel
  • Non-coolant design simplifies setup on manual machines
  • California Proposition 65 warning for cancer and reproductive risk

Product Identity

The Cobra Carbide 54054 is a 5xD high-performance drill bit designed for non-coolant drilling operations. It features a 6.53 mm diameter with a decimal equivalent of .2570 inches. This tool suits machinists and fabricators who need precise hole depth without through-spindle coolant delivery.

Thermal and Power Behaviour

The non-coolant design means cutting heat remains at the tool-workpiece interface during normal drilling cycles. Operators must manage feed rates and spindle speed to prevent excessive temperature build-up. Power draw on the machine spindle will vary with material hardness and chip load rather than coolant pressure.

Sustained Load Performance

Under continuous 5xD depth cuts the drill relies on its flute geometry to evacuate chips without coolant assistance. Chip packing risk increases in deep holes or ductile alloys, so peck cycles may be necessary. The tool maintains dimensional stability as long as chip evacuation remains effective.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $73.99
Pricier than about 76% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCOBRA CARBIDE

Questions about this item

How do I install the 5xD 6.53 mm non-coolant drill in a standard drill chuck, and what step is often missed?

Secure the 54054 drill in a precision collet or keyless chuck, ensure the shank is fully seated, and run at the recommended speed for the workpiece material; the step often missed is verifying true running with a dial indicator before cutting.

What maintenance or replacement will the 54054 drill need later?

Inspect the cutting edges regularly; resharpen the 6.53 mm diameter on a carbide grinder when flank wear appears, or replace the drill once the cutting geometry can no longer be restored.

What limit appears first on the 54054 drill during sustained non-coolant drilling?

Heat buildup at the cutting zone is the first limit; without coolant the 5xD length traps chips and raises temperature, causing accelerated wear or potential breakage if feed and speed are not reduced.

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