Turning Inserts – Negative (NST)
Nueve ranuras para virutas, desde el acabado SWX+ hasta el desbaste 909+, que abarcan acero, acero inoxidable y hierro fundido.
La gama NST de Galtona es el programa de torneado negativo más amplio, con nueve ranuras de viruta específicas para acabado y desbaste.
Para acero: SWX+ (Masterfinish, alta calidad superficial), WL+ (acabado ligero), WM+ —la gama más amplia, con 7 formas de plaquitas para GTCP115, GTCP125, GTCP125HP, GTCP135 y hierro fundido GTCK120— y WR+ para desbaste medio.
Para acero inoxidable y materiales exóticos: JF (acabado de cermet), EXK+ (acabado CNGP/DNGP/VNGP/WNGP), IPK+ (nuevo rompevirutas, bajas fuerzas de corte) y IPR+ (mecanizado medio y desbaste ligero).
Para el desbaste de hierro fundido: 909+, disponible en carburo recubierto GTCK120/GTCK110HP, incluyendo plaquitas de cabeza plana (sin rompevirutas) …-EN aptas para cortes interrumpidos.
WL+ — light finishing
WL+ — New Chipbreaker, Light Finishing
FEM-optimised: increased tool life, reduced temperature and stress.
Example: CNMG 120408EN-WL+. Depth of cut 0.50–2.00 mm, feed 0.20–0.10 mm.
Turning steel neg "P15"
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| Designation | Chipbreaker | Material No. | Available |
|---|---|---|---|
| CNMG 090304EN-WL+ GTCP115 | …-WL+ | MM12044441 | ● |
| CNMG 120404EN-WL+ GTCP115 | …-WL+ | MM12044444 | ● |
| CNMG 120408EN-WL+ GTCP115 | …-WL+ | MM12044454 | ● |
| DNMG 110404EN-WL+ GTCP115 | …-WL+ | MM12041499 | ● |
| DNMG 150604EN-WL+ GTCP115 | …-WL+ | MM12041505 | ● |
| DNMG 150608EN-WL+ GTCP115 | …-WL+ | MM12067233 | ● |
| VNMG 160404EN-WL+ GTCP115 | …-WL+ | MM12046214 | ● |
| WNMG 060404EN-WL+ GTCP115 | …-WL+ | MM12046215 | ● |
| WNMG 080404EN-WL+ GTCP115 | …-WL+ | MM12046216 | ● |
Turning steel neg "P25"
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| Designation | Chipbreaker | Material No. | Available |
|---|---|---|---|
| CNMG 120404EN-WL+ GTCP125 | …-WL+ | MM12044450 | ● |
| CNMG 120408EN-WL+ GTCP125 | …-WL+ | MM12044455 | ● |
| DNMG 110404EN-WL+ GTCP125 | …-WL+ | MM12041502 | ● |
Cutting data — general cutting parameters by workpiece material
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| Group | Type / alloy | Hardness HB | GTCP115 vc | GTCP125 vc |
|---|---|---|---|---|
| P | Non-alloyed steel 0–0.45% C | 150–250 | 220–400 | 170–240 |
| P | Low-alloyed steel | 250–300 | 200–320 | 100–190 |
| P | High-alloyed steel | 200 | 180–320 | 130–210 |
| P | Corrosion-resistant steel | 200 | 200–320 | 130–210 |
| M | Ferritic stainless | 200 | 220–320 | 140–210 |
| M | Austenitic stainless | 180 | – | 100–210 |
| M | Martensitic stainless | 330 | – | 70–100 |
Rated for consistent cutting depth only — not inconsistent or interrupted.

