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High Hardness Cone Carbide Burr, Long Shank (Green Holder)
Long-shank high-hardness cones in the green holder line – reach plus 50 HRC-class cutting in one head.
Design and Construction
Long-shank cone heads in the green-holder line: extended reach plus high-hardness carbide (HRC 90-class equivalent, cutting 50-65 HRC steels). The green holders mark the high-hardness family.
How It Works
The cone concentrates cut at the point for hard steels; the long shank reaches features other heads cannot, at reduced speed per overhang.
Applications
Hardened steel repair, deep-feature dressing, mould work, maintenance with reach.
Field Cases
- Mould shop: 52 HRC cores dressed at depth with the long green cones.
- Maintenance: a deep feature reached without extension chucks.
- Tool room: hardened fixture edges re-cut to line.
Performance Data
| Metric | Value / Observation |
|---|---|
| Cutting capability | Steels up to 65 HRC (typical) |
| Holder colour | Green – high-hardness family |
| Shank | Extended length |
| Speed practice | Reduce RPM with overhang |
Suitable Materials
Hardened steels 45-65 HRC, tool steels.
Material Comparison: Cutting by Workpiece Hardness: HRC45 vs 55 vs 65
What the hardness ladder demands – typical industry data:
| Workpiece | Head Choice | Speed Practice |
|---|---|---|
| Up to 45 HRC | Any carbide family | Standard speed |
| 45-55 HRC | High-hardness heads | Reduce speed ~20% |
| 55-65 HRC | High-hardness + light passes | Reduce speed ~35% |
| Above 65 HRC | Grinding, not burrs | Out of burr range |
| Edge life driver | Workpiece hardness | Speed discipline |
Delivery Scope
Bit in green holder; lengths per order.
Why Choose VPOINT
Reach and hardness – two constraints, one head.
Precision & Quality Control
Hardness verified per batch; runout checked at the nose.
Specifications
Hardness information:
| Item | Specification |
|---|---|
| Head | Cone, high-hardness line |
| Shank | 6 mm (1/4″), extended |
| Holder | Green family |
| Capability | To 65 HRC steels |
Frequently Asked Questions
What hardness can it cut?
Steels up to about 65 HRC with light passes.
Why green holders?
They mark the high-hardness family on the wall.
Long shank speed?
Reduce as overhang grows.
Mould work?
Yes – a core application.
Custom lengths?
Available.
Related Search Terms
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