Cutting conditions
| Grade | PCBN · CCGW09T304 |
|---|---|
| Insert model | CCGW09T304 (honed edge) |
| Workpiece material | 40CrMo (42CrMo) hardened steel (HRC 55-58) |
| Part / feature | Oscillator plate B06, φ60.15 mm — two plates bored in stack, 12 holes |
| Operation | Bore / internal turning |
| Cutting speed vc | 119 m/min |
| Feed f | 0.08 mm/rev |
| Depth of cut ap | 0.3–0.5 mm |
| Coolant | External, water-based emulsion |
| Data source | Field test (customer site) |
Result and comparison basis
Fine boring of stacked oscillator plates in hardened 40CrMo (HRC 55-58) at 119 m/min, 0.08 mm/rev. The cut is essentially continuous with light interruption over the stacked joint and uneven stock of 0.3-0.5 mm, and bore tolerance is held at +0.03 mm with Ra below 0.8. After three-corner testing the insert reached about 10 assemblies per corner - matching the previously used reference grade - with stable sizing and one adjustment per corner. The customer approved a 40-piece batch trial for series production.
Comparison basis: Previously used reference grade (coated PCBN) under identical conditions.
Comparative data from Koves internal cutting tests and customer field applications. Competitor grades are anonymized as reference grades. Results depend on workpiece, machine and setup; validate on your own production before adopting parameters.
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