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.
IPK+ — medium machining
IPK+ — Medium Machining, New Chipbreaker
Reduced burr formation, good surface finish, low cutting forces — stainless steel.
Example: CNMG 120408-IPK+. Depth of cut 1.00–4.20 mm, feed 0.40–0.22 mm.
Turning stainless steel neg "M20" — GTCM120HP
| Designation | Material No. | Available |
|---|---|---|
| CNMG 090304-IPK+ | MM14620558 | ● |
| CNMG 090308-IPK+ | MM12563653 | ● |
| CNMG 120404-IPK+ | MM12233866 | ● |
| CNMG 120408-IPK+ | MM12233867 | ● |
| CNMG 120412-IPK+ | MM14620560 | ○ |
| DNMG 110404-IPK+ | MM14600542 | ● |
| DNMG 110408-IPK+ | MM14600544 | ● |
| DNMG 150404-IPK+ | MM14600546 | ● |
| DNMG 150408-IPK+ | MM14681077 | ● |
| DNMG 150604-IPK+ | MM12233869 | ● |
| DNMG 150608-IPK+ | MM12233868 | ● |
| SNMG 120408-IPK+ | MM14600552 | ● |
| TNMG 160404-IPK+ | MM14600556 | ● |
| TNMG 160408-IPK+ | MM14600566 | ● |
| VNMG 160408-IPK+ | MM14600567 | ● |
| WNMG 060404-IPK+ | MM14620561 | ● |
| WNMG 060408-IPK+ | MM14620547 | ● |
| WNMG 080404-IPK+ | MM12233872 | ● |
| WNMG 080408-IPK+ | MM12233870 | ● |
Turning stainless steel neg "M25" — GTPM125
| Designation | Material No. | Available |
|---|---|---|
| CNMG 090304-IPK+ | MM11812968 | ● |
| CNMG 090308-IPK+ | MM11812211 | ● |
| CNMG 120404-IPK+ | MM11748122 | ● |
| CNMG 120408-IPK+ | MM11748123 | ● |
| DNMG 110404-IPK+ | MM11808002 | ● |
| DNMG 110408-IPK+ | MM11807993 | ● |
| DNMG 150404-IPK+ | MM11753922 | ● |
| DNMG 150408-IPK+ | MM11753921 | ● |
| DNMG 150604-IPK+ | MM11748133 | ● |
| DNMG 150608-IPK+ | MM11748134 | ● |
| SNMG 120408-IPK+ | MM11804482 | ● |
| TNMG 160404-IPK+ | MM11748628 | ● |
| TNMG 160408-IPK+ | MM11748632 | ● |
| VNMG 160408-IPK+ | MM11754890 | ● |
| WNMG 060404-IPK+ | MM11808488 | ● |
| WNMG 060408-IPK+ | MM11808489 | ● |
| WNMG 080404-IPK+ | MM11749341 | ● |
| WNMG 080408-IPK+ | MM11749343 | ● |
| WNMG 080412-IPK+ | MM11808490 | ● |
Turning stainless steel neg — GTCM120HP (new chipbreaker variant)
| Designation | Material No. | Available |
|---|---|---|
| CNMG 120404-IPK+ | MM12233866 | ● |
| CNMG 120408-IPK+ | MM12233867 | ● |
| DNMG 150604-IPK+ | MM12233869 | ● |
| DNMG 150608-IPK+ | MM12233868 | ● |
| WNMG 080404-IPK+ | MM12233872 | ● |
| WNMG 080408-IPK+ | MM12233870 | ● |
Cutting data — general cutting parameters by workpiece material
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| Group | Type / alloy | Hardness HB | GTCM120HP vc | GTPM125 vc | GTPM135M vc |
|---|---|---|---|---|---|
| P | Non-alloyed steel 0–0.45% C | 150–250 | 150–250 | 130–250 | 150–190 |
| P | Low-alloyed steel | 250–300 | 100–200 | 60–180 | 90–150 |
| P | High-alloyed steel | 200 | 120–220 | 80–200 | 120–200 |
| P | Corrosion-resistant steel | 200 | 120–220 | 100–200 | 140–180 |
| M | Ferritic stainless | 200 | 190–250 | 120–250 | 140–200 |
| M | Austenitic stainless | 180 | 140–220 | 100–220 | 110–190 |
| M | Duplex stainless | 230–260 | 110–170 | 60–160 | 80–150 |
| M | Martensitic stainless | 330 | 40–100 | 40–100 | 55–75 |
Rated for consistent cutting depth; interrupted cuts not recommended.