For turning Hardened steel ｜ Coated / Uncoated CBN
Hardened steel – Finishing
The first recommended material for continuous to light interrupted machining,
with a coating that has excellent wear resistance.
| BHN320 | Competitor |
|---|---|
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Alloy steel（HRc62）
vc = 150m/min, f = 0.1mm/rev, ap = 0.2mm, Continuous
A multi-layer coating with excellent wear resistance and chipping resistance is used,
making this a versatile material that can be used for continuous to interrupted machining.
| BHN330 | Competitor |
|---|---|
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| Number of impacts 2800 times | |
Alloy steel（HRc62）
vc = 75m/min, f = 0.1mm/rev, ap = 0.1mm, Heavy interrupted
Number of times until breakage
CBN is bonded with a special binder, providing excellent wear resistance at high speeds and continuous cutting.
| BH320 | Competitor |
|---|---|
 |
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Alloy steel（HRc62）
vc = 150m/min, f = 0.1mm/rev, ap = 0.2mm, Continuous
| BH330 | Competitor |
|---|---|
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Alloy steel（HRc62）
vc = 150m/min, f = 0.1mm/rev, ap = 0.2mm,
After processing 0.7km
| BH330 | Competitor |
|---|---|
 |
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| Number of impacts 3500 times | |
Alloy steel（HRc62）
vc = 150m/min, f = 0.1mm/rev, ap = 0.2mm, Heavy interrupted
High resistance to chipping and fracture, highly recommended for heavy interrupted cutting.
| BH340 | Competitor |
|---|---|
 |
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| Number of impacts 4300 times | |
Alloy steel（HRc62）
vc = 75m/min, f = 0.1mm/rev, ap = 0.1mm, Heavy interrupted
Number of times until breakage
← Sharpness
Toughness →
| ●1st Recommendation 〇2nd Recommendation | ||||||
| Interruption length | Recommended material | Cutting speed | Feed | DOC | Coolant | |
|---|---|---|---|---|---|---|
| (m/min) (SFM) | (mm/rev) (IPR) | (mm) (inch) | DRY | WET | ||
| Continuous cutting | BHN320 (Coated CBN) BH320 | 100 – 300 330 – 1000 | up to 0.2 .008 | up to 0.5 .020 | 〇 | ● |
| Light interrupt cutting | BHN330 (Coated CBN) BH330 | 75 – 225 330 – 740 | up to 0.15 .006 | ● | 〇 | |
| Heavy interrupted cutting | BH340 | 50 – 150 160 – 500 | up to 0.1 .004 | ● | 〇 | |
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| BHN320 |
400 pcs / corner
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| Competitor’s CBN |
200 pcs / corner
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Conventionally, Competitor’s CBN would reach the end of its tool life due to a deterioration in the machined surface roughness, but BHN320 suppresses notch wear and achieved double tool life.
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| BH340 |
140 pcs / corner (Improved stability) |
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| Competitor’s CBN |
100 pcs / corner (Not stability) |
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Conventional CBN frequently suffered from sudden chipping, but BH340 can be stably machined up to a certain point.
For more information about this product, visit our online e-catalog, or download the catalog/product report
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