M.A. Ford
M.A. Ford HPDCR 0770A Twister HPD Coolant Drill 5X 7.70 mm
A 7.70 mm diameter coolant-fed drill bit designed for high-performance drilling applications
- Twister HPD design enables coolant-through drilling
- 5X diameter capability reaches deeper holes efficiently
- 70 mm diameter suits precise metalworking tasks
- M.A. Ford brand delivers professional-grade tool reliability
- California Proposition 65 warning informs safe handling practices
7.70 mm Coolant-Fed Drill
The M.A. Ford HPDCR 0770A Twister HPD is a solid-carbide drill with through-coolant channels, designed for high-performance drilling in ferrous and non-ferrous metals. Its 5X diameter capability allows deeper holes in a single pass, reducing cycle time on CNC machines. The 7.70 mm cutting diameter suits precise hole-making in production environments.
Suited For High-Volume CNC Work
Machinists running dedicated coolant-through spindles will gain the chip evacuation and tool life this geometry delivers. Shops without through-coolant capability or those needing larger diameters should look at alternative tooling, as this drill requires pressurised coolant to perform as intended.
7.70 mm Cutting Diameter
The 7.70 mm diameter is the critical dimension that determines fit for the programmed hole size. Verify the tolerance stack-up in your application before ordering, as no other diameter option exists for this part number.
Highlights
- Twister HPD design enables coolant-through drilling
- 5X diameter capability reaches deeper holes efficiently
- 70 mm diameter suits precise metalworking tasks
- M.A. Ford brand delivers professional-grade tool reliability
- California Proposition 65 warning informs safe handling practices
Specifications
| Brand | M.A. FORD |
|---|
Questions about this item
How is the 7.70 mm coolant drill installed in a CNC holder, and what step do operators often miss?
Clamp the shank at the recommended torque and verify the through-coolant port aligns with the machine's coolant delivery; many operators forget to purge air from the coolant line before the first cut.
What maintenance or replacement will the 7.70 mm Twister HPD drill need over time?
The cutting edges will dull and require professional regrinding to the original geometry; coolant-hole blockage from chip buildup should be cleared after each job to maintain flow.
What limit appears first on the 7.70 mm drill during sustained high-speed drilling?
Heat buildup at the cutting zone becomes the limiting factor; without adequate coolant pressure the drill will lose edge integrity before the 5X depth capacity is fully exploited.
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