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Silver metal twist drill bit with spiral flutes and coolant hole, 8.40 mm diameter

M.A. Ford

M.A. Ford Cyclone Xd 8X Coolant Fed Double Margin Drill 8.40mm

SKU CH-28BK-ZN42H

Coolant-fed double-margin drill for 8.40 mm holes with 8× diameter depth capability

  • 8x diameter reach enables deep-hole drilling
  • Coolant-fed design delivers lubrication to the cutting zone
  • Double-margin geometry improves hole straightness and finish
  • 40 mm diameter suits precise metric applications
  • California Proposition 65 warning informs safe handling

M.A. Ford Cyclone Xd 8X Drill 8.40mm

The M.A. Ford Cyclone Xd 8X is a coolant-fed double margin drill with an 8.40mm cutting diameter. It is designed for high-performance drilling in demanding industrial applications where precision and tool life are critical. Professional machinists and manufacturing engineers use this tool for deep-hole drilling operations requiring consistent accuracy.

Check machine coolant system

Verify that your machine spindle and tool holder can accommodate a coolant-fed drill with through-spindle coolant delivery. Ensure the coolant pressure and flow rate available on your equipment meet the operational requirements for an 8X diameter-to-depth ratio tool. Confirm the workpiece material and fixturing are suitable for the cutting forces generated by this geometry.

Replaces standard drills for deep-hole precision

This drill upgrades from conventional twist drills or single-margin tools when hole straightness, surface finish, and diameter tolerance must be held over greater depths. The jump is worth it when coolant-fed capability reduces cycle time and eliminates peck drilling cycles in materials that challenge standard tooling. It is not for buyers who need a general-purpose drill for shallow holes or intermittent use.

How it compares

Measured against everything we stock in Power Drills, Drivers & Cutting Bits, at today’s prices. Recalculated every night.

Price $292.99
Pricier than about 89% of the 2,412 comparable items (median $81.99).

Specifications

Product
Brand nameM.A. FORD

Questions about this item

Does the 8.40 mm Cyclone Xd drill come with coolant fittings or do I need to order them separately?

The drill is a coolant-fed tool body only; coolant supply fittings, tubing and filtration are not included and must be sourced to match your machine's coolant system.

The listing shows a single 8.40 mm diameter — are other sizes available under the same CXDCLM part family?

CXDCLM0840AP is the 8.40 mm variant; other diameters carry different part numbers in the Cyclone Xd 8X series.

What does the 8X designation mean for hole depth when the drill is running in a CNC with through-spindle coolant?

8X indicates the flute length allows drilling up to eight times the 8.40 mm diameter in a single pass when coolant pressure and workpiece rigidity are adequate.

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