NTK Ceramic – Forged Bearing – ZC7
NTK Ceramic - Forged Bearing - ZC7
CBN inserts are very expensive and can cause issues with the machined surface flatness, necessitating additional finishing. However, the ZC7 doubled tool life and increased cutting speed by 1.5 times, eliminating the need for finishing. This resulted in a fivefold increase in productivity and successfully reduced the total cost.
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| Industry | Heavy |
|---|---|
| Component | Bearing |
| Material ISO code |
 H - Hardened material |
| Work material | SUJ2(HRc56) |
| Machine(spindle type) | CNC Lathe |
| Tool family | Turning |
| Tool category | External turning |
| Product name | ZC7 Ceramic Insert |
| TSR No. | 5388T |
Tool
| Tungaloy - NTK | Competitor | |
|---|---|---|
| Insert | RNGN120700S02025 | RNGN120400 |
| Grade | ZC7 | CBN insert |
Tool life
| Tungaloy - NTK | Competitor | |
|---|---|---|
| Tool life (pcs/edge) | 1 | 0.5 |
Cutting conditions
| Tungaloy - NTK | Competitor | |
|---|---|---|
| Cutting speed V/c (m/min) | 180 | 120 |
| Feed f (mm/rev) | 0.6 | 0.6 |
| Depth of cut ap (mm) | 2 | 0.5 |
| Number of pass | 1 | 4 |
| Coolant | WET | WET |