HD8 Chip Groove
HD8 Chip Groove
Heaviest chip groove in the range — steel "P25", also rated for interrupted cuts.
Example: CNMM 190616SN-HD8. Depth of cut 2.50–12.00 mm, feed 1.20–0.35 mm. Suited to consistent, inconsistent, and interrupted cutting depth.
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| Designation | Chipbreaker | Material No. | Available |
|---|---|---|---|
| CNMM 190616SN-HD8 GTCP125 | …-HD8 | MM11840034 | ● |
| CNMM 190624SN-HD8 GTCP125 | …-HD8 | MM11840035 | ● |
| CNMM 250924SN-HD8 GTCP125 | …-HD8 | MM11840038 | ● |
| CNMM 250932SN-HD8 GTCP125 | …-HD8 | MM11840039 | ● |
| SNMM 190616SN-HD8 GTCP125 | …-HD8 | MM11840043 | ● |
| SNMM 190624SN-HD8 GTCP125 | …-HD8 | MM11840044 | ● |
| SNMM 250924SN-HD8 GTCP125 | …-HD8 | MM11840047 | ● |
| SNMM 250932SN-HD8 GTCP125 | …-HD8 | MM11840048 | ● |
Cutting data — general cutting parameters by workpiece material
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| Group | Type / alloy | Hardness HB | GTCP115 vc | GTCP125 vc | GTCP135 vc |
|---|---|---|---|---|---|
| P | Non-alloyed steel 0–0.45% C | 150–250 | 220–400 | 170–240 | 170–190 |
| P | Low-alloyed steel | 250–300 | 200–320 | 100–190 | 90–150 |
| P | High-alloyed steel | 200 | 180–320 | 130–210 | 120–200 |
| P | Corrosion-resistant steel | 200 | 200–320 | 130–210 | 140–180 |
| M | Ferritic stainless | 200 | 220–320 | 140–210 | 140–200 |
| M | Austenitic stainless | 180 | – | 100–210 | 110–190 |
| M | Duplex stainless | 230–260 | – | – | 80–150 |
| M | Martensitic stainless | 330 | – | 70–100 | 55–75 |
| K | Grey cast iron | 180 | 140–370 | 130–210 | – |
| K | Spheroidal cast iron | 160 | 190–430 | 120–240 | – |
| K | Malleable/tempered iron | 130 | 180–520 | 150–250 | – |
