M.A. Ford
M.A. Ford HPDCR 0870A Twister HPD Coolant Drill 8.70 mm
An 8.70 mm coolant-fed drill bit designed for high-performance drilling applications
- Twister HPD design enables high-performance coolant drilling
- 70 mm diameter suits precise hole-making tasks
- 5X coolant capability supports extended drilling cycles
- M.A. Ford manufacturing ensures professional-grade tool reliability
- California Proposition 65 warning discloses regulated chemical content
M.A. Ford 8.70 mm HPDCR Coolant Drill
The M.A. Ford HPDCR 0870A Twister HPD coolant drill is a 5× diameter solid-carbide tool with an 8.70 mm cutting diameter. It is engineered for high-performance drilling in steel, stainless steel and cast iron where through-coolant delivery improves chip evacuation and tool life. Professional machinists and CNC operators running rigid machine tools will find it suited to production holes requiring consistent diameter tolerance.
Installation and common issues
The drill uses a standard cylindrical shank for direct clamping in hydraulic, shrink-fit or precision collet holders; no special adapters are required. Through-spindle coolant must be activated and filtered to prevent blockage of the internal channels. Common problems include premature wear from insufficient coolant pressure, chipping caused by excessive feed on entry, and oversize holes when runout exceeds holder specifications.
8.70 mm cutting diameter decides fit
The single specification that determines whether this is the correct drill is the 8.70 mm cutting diameter; the hole you need to produce must match this size exactly. The 5× length-to-diameter ratio fixes the maximum drill depth, so the workpiece thickness and required hole depth must fall within that limit. California Proposition 65 warnings apply because the tool contains listed chemicals.
Highlights
- Twister HPD design enables high-performance coolant drilling
- 70 mm diameter suits precise hole-making tasks
- 5X coolant capability supports extended drilling cycles
- M.A. Ford manufacturing ensures professional-grade tool reliability
- California Proposition 65 warning discloses regulated chemical content
Specifications
| Brand | M.A. FORD |
|---|
Questions about this item
How do I confirm the 8.70 mm Twister HPD coolant drill is cutting correctly after setup?
Inspect the hole diameter with a gauge to verify it matches 8.70 mm and check that coolant flows steadily through the internal channels during operation.
What comes in the box with the HPDCR 0870A and what must I supply separately?
The package contains the 8.70 mm Twister HPD coolant drill only; you must provide a compatible tool holder, coolant supply system and workpiece clamping.
When should I choose the 8.70 mm version over other diameters in the Twister HPD range?
Select the 8.70 mm drill when the finished hole must be exactly 8.70 mm; other diameters in the series are made for different target hole sizes.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
