Thread Rolls
1. Rolls For Multi Start Jobs.
2.
Infeed Rolls.
3.
Annular Through Feed Rolls ( with or without Lead - In)
4.
Helitical Through Feed Rolls (With Lead In & Run Off)
5.
Rolls for Fette Heads/ Winter Heads/Wagner Heads
6.
Rolls For Other Tangential Heads
7.
Rolls For Making Oil Grooves.
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| STEELS USED IN THE MANUFACTURE OF THREAD ROLLS |
| Steel |
AISI D2
( Die Steel) |
AISI M2
(Hi SpeedSteel) |
AISI M35
(H.S.S.-5 % Cobolt) |
| C |
1.6 |
0.89 |
0.92 |
| Cr |
11.5 |
4.3 |
4.3 |
| Mo |
0.6 |
5.0 |
5.0 |
| v |
0.2 |
1.9 |
1.9 |
| W |
0.5 |
6.4 |
6.4 |
| co |
- |
- |
4.8 |
| Hardness Of
Thread Roll |
59 - 61
Hrc |
61 - 63
Hrc |
62 -64
Hrc |
| Keyway (C11) |
| Bore Diameter d (H7) |
Width F |
Depth d1 |
Width of Thread Roll (W) |
| 40 |
12 |
4 |
From
30 mm
to
180 mm |
| 54 |
12 |
4 |
| 63 |
12 |
4 |
| 69.85 |
12.7 |
5 |
| 80 |
16 |
5 |
| 100 |
16 |
5 |
| Type of Machine |
Max. Dia. of Thread
Roll in mm. |
Recomended Max.
Width of Roll in mm. |
| Praga 511 |
100 |
50 |
| WMW 8 ton |
125 |
80 |
| Baco Smith |
130 |
80 |
| Praga 512 |
170 |
130 |
| MTR - 15 170 |
130 |
130 |
| WMW 12.5 Ton |
185 |
150 |
| Praga 513 |
200 |
150 |
| Praga 514 |
230 |
150 |
| WMW 25 Ton |
230 |
180 |
