CoroDrill® 860
CoroDrill® 860 is a solid carbide drill designed for fast and problem-free drilling, maximizing productivity through high metal cutting efficiency. With excellent chip evacuation in long and short chipping materials, CoroDrill 860 provides green light machining at high penetration rates.
The hole
The three most basic parameters for the hole are: The hole type and required precision affect tool choice. Drilling can be affected by irregular or angled entry/ exit surfaces and by cross holes.
The component
When the hole is analyzed, have a look at the workpiece material, component shape and quantity
The machine
The machine influences: Always consider:
Tool holding
Productivity is not only influenced by grade and geometry, but also by the ability to clamp the tool securely and precisely. For best stability and hole quality always use Coromant Capto or CoroChuck 930 with the shortest possible drill and overhang.
Application tips
How to achieve good hole quality
Achieving good hole quality may require some extra attention. Here you can find some useful tips to get you started.
Initial considerations
Cutting speed, along with material hardness, are the main factors affecting tool life and power consumption.
Reconditioning
Recondition your round tool up to 3 times for major cost savings with our reconditioning service.
Recommendations
- It is recommended to use hydraulic precision chucks
- It is recommended to use internal coolant, minimum recommended pressure 10 bar (145 psi)
CoroChuck™ 930 For highest clamping force and precision
CoroChuck™ 930 pencil type For improved accessibility
Product range
| Geometry | Drill type | Length/Diameter ratio | Drill diameter mm (inch) | Coolant | Shank type | Grade |
| -GM | Standard single diameter drill | 3‒8 | 3-16 (0.118‒0.63) | Internal/external | Cylindrical DIN 6535 HA | X1BM |
| -GM | Standard two diameter drill | 3 | 3-14 (0.118‒0.55) | Internal | Cylindrical DIN 6535 HA | X1BM |
| -SM | Standard single diameter drill | 2-5 | 3-16 (0.118‒0.63) | Internal | Cylindrical DIN 6535 HA | 1210 |
| -SD | Standard single diameter drill | 3-8 | 3-16 (0.118‒0.63) | Internal | Cylindrical DIN 6535 HA | S2BM |
| -PM | Standard single diameter drill | 2–3 | 3−20 (0.118−0.787) | Internal/external | Cylindrical DIN 6535 HA | P1BM |
| 4–5 | 3−20 (0.118−0.787) | Internal/external | Cylindrical DIN 6535 HA | P1BM | ||
| 7–8 | 3−16 (0.118−0.630) | Internal | Cylindrical DIN 6535 HA | P1BM | ||
| -PM | Step and chamfer drill | 3 | 3.35−17.50 (0.132−0.689) | Internal | Cylindrical DIN 6535 HA | P1BM |
| -NM | Standard single diameter drill | 3, 8 | 3−20 (0.118−0.787) | Internal | Cylindrical DIN 6535 HA | H10F |
| -MM | Standard single diameter drill | 3 | 3−20 (0.118−0.787) | Internal | Cylindrical DIN 6535 HA | M2BM |
| 5 | 3−20 (0.118−0.787) | Internal | Cylindrical DIN 6535 HA | M2BM |
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