Process flow of making hex bolt

1. Cold heading machine
Main technical parameters:
Model | Max. Screw Dia. (mm) | Max. Screw length (mm) | Capacity (pcs/min) | Motor (kw) | Weight(Ton) | Overall size (m) |
ZM3-18A/B | 3 | 18 | 160-180 | 0.75/0.37 | 0.6 | 1.3*0.75*0.9 |
ZM3-28A/B | 3 | 28 | 160-180 | 0.75/0.37 | 0.6 | 1.3*0.75*0.9 |
ZM4-28B | 4 | 28 | 120-160 | 1.5/0.37 | 0.97 | 1.5*0.9*0.9 |
ZM4-28D | 4.5 | 28 | 180-200 | 1.5/0.37 | 1.2 | 1.6*1*1.2 |
ZM4-40B | 4 | 40 | 120-150 | 1.5/0.37 | 0.97 | 1.6*1*1.2 |
ZM4-40D | 4.5 | 40 | 180-200 | 1.5/0.37 | 1.2 | 1.6*1.1*1.1 |
ZM5-40B | 6 | 40 | 120-150 | 2.2/0.37 | 1.8 | 1.8*1.1*1.1 |
ZM5-60B | 6 | 60 | 110-140 | 2.2/0.37 | 1.8 | 1.8*1.1*1.1 |
ZM5-80B | 6 | 80 | 80-100 | 2.2/0.37 | 1.9 | 2*1.1*1.2 |
ZM5-100B | 6 | 100 | 60-80 | 3/0.18 | 2.1 | 2.4*1.2*1.2 |
ZM5-120B | 6 | 120 | 50-70 | 3.6/0.37 | 2.3 | 2.8*1.3*1.3 |
ZM6-60B | 8 | 60 | 80-110 | 4/0.37 | 2.8 | 2.3*1.3*1.3 |
ZM6-100B | 8 | 100 | 60-90 | 4/0.37 | 2.7 | 2.3*1.3*1.3 |
ZM6-120B | 8 | 120 | 60-70 | 4/0.37 | 3 | 2.4*1.3*1.4 |
ZM6-170B | 8 | 170 | 40-70 | 4/0.37 | 3.7 | 3*1.3*1.5 |
ZM6-200B | 8 | 200 | 40-55 | 4/0.37 | 3.7 | 3*1.3*1.5 |
ZM8-120B | 10 | 120 | 50-90 | 5.5/0.37 | 4.6 | 3.4*1.5*1.5 |
ZM8-130B | 10 | 130 | 50-90 | 5.5/0.37 | 4.6 | 3.4*1.51.5 |
ZM8-130C | 10 | 130 | 50-90 | 5.5/0.37 | 4.6 | 3.4*1.51.5 |
ZM8-150C | 10 | 150 | 40-50 | 5.5/0.37 | 5 | 3.5*1.7*1.7 |
ZM8-200B | 10 | 200 | 25-60 | 7.5/0.37 | 6 | 3.8*1.6*1.7 |
ZM10-120B | 12 | 120 | 40-70 | 11/0.75 | 7 | 3.3*1.71.7 |
ZM10-170C | 12 | 170 | 40-60 | 11/0.75 | 7.5 | 4.2*1.81.7 |
ZM10-220C | 12 | 220 | 35-60 | 11/0.75 | 7.5 | 4.2*1.81.7 |
ZM10-250C | 12 | 250 | 30-45 | 11/0.75 | 8.5 | 5*1.8*1.7 |
ZM10-300C | 12 | 300 | 25-35 | 15/0.75 | 9 | 5*1.9*2.1 |
ZM10-360C | 12 | 360 | 20-30 | 15/0.75 | 12 | 6.7*2*2.6 |
ZM12-150C | 14 | 150 | 40-50 | 15/0.75 | 10 | 3.9*1.9*1.8 |
ZM12-250C | 14 | 250 | 35-50 | 15/0.75 | 11 | 5.3*2.2*1.9 |
ZM14-150C | 16 | 150 | 40-50 | 11/0.75 | 10 | 4.5*2.2*2.15 |
ZM14-250C | 16 | 250 | 35-45 | 15/0.75 | 11 | 5*2.2*2.15 |


2. Bolt trimming machine
Model | Opposite size of cutting(mm) | Material length (mm) | Capacity (pcs/min) | Motor (kw) |
MZ23-8 | 10-14 | 10-100 | 60 | 3kw |
MZ23-10A | 14-17 | 20-140 | 60 | 4kw |
MZ23-10B | 14-17 | 20-250 | 27-30 | 5.5kw |
MZ23-12A | 14-19 | 25-100 | 55 | 5.5kw |
MZ23-12B | 14-19 | 25-150 | 55 | 5.5kw |
MZ23-16A | 17-24 | 30-100 | 45 | 7.5kw |
MZ23-16B | 17-24 | 30-150 | 45 | 7.5kw |
MZ23-16C | 17-24 | 30-250 | 45 | 7.5kw |
MZ23-20 | 17-30 | 40-250 | 40 | 11kw |
MZ23-20 | 17-30 | 40-300 | 40 | 11kw |
MZ23-24 | 17-36 | 40-300 | 40 | 15kw |
MZ23-30 | 19-46 | 100-300 | 40 | 18.5kw |

3. Full automatic thread rolling machine
Model | Max. Screw Dia (mm) | Max. Screw length (mm) | Motor (kw) | Capacity (pcs/min) | Weight (Ton) | Overall size (m) |
HR3-20A | M2.6 | 20 | 1.1 | 350 | 0.3 | 1.1*0.53*1.2 |
HR3-20B | M2.6 | 20 | 1.1 | 350 | 0.3 | 1.1*0.53*1.2 |
HR4-25A | M4 | 25 | 1.5 | 320 | 0.45 | 1.3*0.63*1.32 |
HR4-25B | M4 | 25 | 1.5 | 320 | 0.45 | 1.3*0.63*1.32 |
HR4-40A | M4 | 40 | 2.2/0.37 | 280 | 0.97 | 1.5*1.15*1.35 |
HR4-40B | M4 | 40 | 2.2/0.37 | 280 | 0.97 | 1.5*1.15*1.35 |
HR5-55B | M5 | 55 | 3+0.37 | 160 | 1.2 | 1.6*1.35*1.7 |
HR5-65A | M5 | 65 | 3+0.37 | 130 | 1.3 | 1.75*1.4*1.65 |
HR5-65B | M5 | 65 | 3+0.37 | 130 | 1.3 | 1.75*1.4*1.65 |
HR6-60A | M6 | 60 | 4/0.37 | 180 | 1.5 | 1.7*1.65*1.3 |
HR6-60B | M6 | 60 | 4/0.37 | 180 | 1.5 | 1.7*1.65*1.3 |
HR6-100B | M6 | 100 | 5.5+0.37 | 110 | 1.9 | 2.7*1.3*1.3 |
HR8-80B | M8 | 80 | 5.5/0.37 | 110 | 1.8 | 2.1*1.55*1.3 |
HR8-100B | M8 | 100 | 7.5+0.37 | 100 | 2.1 | 2.7*1.7*1.3 |
HR8-120B | M8 | 120 | 5.5 | 100 | 2.1 | 2.4*1.8*1.4 |
HR10-120B | M10 | 120 | 7.5 | 80 | 1.8 | 2.35*1.95*1.4 |
HR12-120B | M12 | 120 | 11 | 60 | 3 | 2.45*2*1.45 |
HR12-160B | M12 | 160 | 13 | 60 | 3 | 2.45*2*1.45 |
HR12-220B | M12 | 220 | 15 | 50 | 3.5 | 2.5*2*1.45 |
HR16-120B | M16 | 120 | 15 | 50 | 3.8 | 2.5*2.1*1.45 |
HR16-160B | M16 | 160 | 15 | 50 | 4 | 2.5*2.1*1.45 |
HR16-220B | M16 | 220 | 15 | 45 | 4.8 | 3.7*1.9*1.7 |


Machines for making nuts
1. HR series cold upsetting forming machine
Model | HR11B6S | HR14B6S | HR17B6S | HR19B6S | HR24B6S | |
Dies | 6 | 6 | 6 | 6 | 6 | |
Forging Power | Ton | 60 | 95 | 120 | 150 | 250 |
Cut-off Dia.(max) | mm | 11 | 16 | 18 | 20 | 24 |
Cut-off Length | mm | 7 | 11 | 13 | 20 | 30 |
Making Size | DIN | M6 | M8 | M10 | M12 | M16 |
Output | Pcs/Min | 260 | 180 | 160 | 130 | 110 |
Slide Ram | mm | 50 | 70 | 80 | 100 | 110 |
Kick-out Length(max) | mm | 11 | 18 | 20 | 30 | 35 |
Dies Pitch | mm | 50 | 60 | 70 | 80 | 100 |
Main Motor | Kw | 11 | 15 | 22 | 37 | 45Kw |
Lubricant Motor | Kw | 1.5 | 1.5 | 3 | 3 | 3 |
Lubricant oil | Litre | 540 | 720 | 900 | 1080 | 1440 |
Weight | Ton | 4 | 8 | 10 | 15 | 25 |
Dimension | M | 2.15*1.55*1.06 | 2.8*2.05*1.3 | 3.67*2.05*1.4 | 4.0*2.45*1.45 | 5.0*3.0*1.7 |

2.Nut tapping machine
Model | HR-M8B-D4G | HR-M12B-D4G | HR-M14B-D4G | HR-M16B-D4G | HR-M18B-D4G |
Tapping range | M6-8 | M10-12 | M14 | M16 | M18 |
Capacity (pcs/min) | 180-240 | 112-148 | 76-84 | 68-76 | 48-56 |
No. of Spindle | 4 | 4 | 4 | 4 | 4 |
Total Motor power (kw) | 4.7 | 6.3 | 6.3 | 10.2 | 10.2 |
Weight (kg) | 1T | 1.2T | 1.2T | 1.8T | 1.8T |
Dimension (m) | 1.2*1.2*1.6 | 1.6*1.6*1.6 | 1.6*1.6*1.6 | 1.6*1.6*1.6 | 1.8*1.8*1.9 |

We can also customize machine according to your needs. Please send pictures of your bolts and nuts,
and tell the sizes you want to make, then we can recommend most suitable machine accordingly.



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