we manufacture in the following variants:
- nitrided screws
- hardened screws (CPM)
- armoured screws EXTRA
- armoured screws EXTREM
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Screws for extrusion machines
- NITRIDED screws - suitable for extrusion of clean materials
| Diameter in mm | Lenght (max.) in mm | Nitrided layer depth in mm | Weld thickness in mm | Hardness |
| 20 ¸ 750 | 6000 | 0.5 ¸ 0.7 | - | 950 ¸ 80 HV |
- HARDENED screws (CPM) – the maximum possible screw quality
| Diameter in mm | Lenght (max.) in mm | Nitrided layer depth in mm | Weld thickness in mm | Hardness |
| 20 ¸ 750 | 2800 | - | prokaleno v celém průřezu | 58 ¸ 61 HRC |
- ARMOURED screws EXTRA
| Diameter in mm | Lenght (max.) in mm | Nitrided layer depth in mm | Weld thickness in mm | Hardness |
| 20 ¸ 750 | 6000 | 0.5 ¸ 0.7 on the nitrided surfaces of the sides and core | 1.5 ¸ 2.5 | 50 ¸ 55 HRC |
- ARMOURED screws EXTREM, armoured layer contains tungsten carbide grains of hardness up to 2400 HV
| Diameter in mm | Lenght (max.) in mm | Nitrided layer depth in mm | Weld thickness in mm | Hardness |
| 40 ¸ 750 | 6000 | 0.5 ¸ 0.7 on the nitrided surfaces of the sides and core | 1.5 ¸ 2.5 | 50 ¸ 55 HRC |