Your Satisfaction, Our Promise.
Chun Zu's CH Series 1-Die 2-Blow Cold Headers are meticulously designed to deliver exceptional precision and versatility in screw production. Specifically engineered to produce a wide range of screw head types, including pan head, flat head, socket head, bugle head, and truss head, the CH series ensures that every product is formed with high concentricity and superior quality. This makes the CH series an invaluable asset for both the automotive and construction industries, where the consistency and accuracy of fasteners are critical.
The CH series machines are built to handle various head configurations with ease, maintaining the precise specifications needed to meet industry standards. Whether producing screws for automotive assemblies, where every component must perform flawlessly under demanding conditions, or for construction applications that require durability and reliability, Chun Zu’s CH Series delivers consistent, high-quality results.
With a focus on high concentricity, the CH Series ensures that each screw head is formed with meticulous attention to detail, providing manufacturers with the confidence that their products will perform as expected. This commitment to quality makes the CH Series an ideal choice for manufacturers looking to enhance their production capabilities and deliver superior fasteners to the market.
Choose Chun Zu's CH Series Cold Headers for your screw forming needs and experience the precision, versatility, and reliability that have made Chun Zu a trusted name in the cold forming industry for over four decades.
Review the specifications of our flagship models
Forging Load (Ton) |
Min. Cut-off Diam. (mm) |
Max. Cut-off Diam. (mm) |
Max. Cut-off Length (mm) |
Max. Speed (ppm) |
P.K.O Stroke (mm) |
K.O Stroke (mm) |
Motor Power (hp) |
Cut-off Die Diam. (mm) |
Main Die Diam. (mm) |
#1 Punch Die Diam. (mm) |
#2 Punch Die Diam. (mm) |
#1 to #2 Die Dist. (mm) |
Main Slider Stroke (mm) |
Machine Weight (Kg) |
|
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CH-3 |
10 | 0.8 | 3 | 34 | 300 | 4 | 22 | 3 | Ø15x20L | Ø25x34L | Ø22x45L | Ø18x38L | 24 | 44 | 650 |
CH-5S |
20 | 2 | 5 | 45 | 250 | 6.5 | 26 | 7.5 | Ø19x30L | Ø34.5x45L | Ø31x62.5L | Ø25x52L | 30 | 60 | 1,300 |
CH-5L |
20 | 2 | 5 | 69 | 200 | 10 | 51 | 5 | Ø19x30L | Ø34.5x65L | Ø31x62.5L | Ø25x52L | 30 | 84 | 1,400 |
CH-6S |
25 | 3 | 6.35 | 63 | 200 | 8 | 38 | 7.5 | Ø25x35L | Ø38x55L | Ø35x77L | Ø35x67.5L | 41 | 80 | 2,300 |
CH-6L |
25 | 3 | 6.35 | 89 | 160 | 10 | 64 | 7.5 | Ø25x35L | Ø38x75L | Ø35x77L | Ø35x67.5L | 41 | 106 | 2,500 |
CH-6LL |
25 | 3 | 6.35 | 128 | 110 | 12 | 102 | 7.5 | Ø25x35L | Ø38x110L | Ø35x77L | Ø35x67.5L | 41 | 146 | 3,000 |
CH-10S |
40 | 6 | 10 | 93 | 120 | 10 | 51 | 15 | Ø32x35L | Ø65x120L | Ø40x98L | Ø40x113L | 46 | 120 | 5,800 |
CH-10L |
40 | 6 | 10 | 145 | 100 | 13 | 102 | 15 | Ø32x35L | Ø65x120L | Ø40x98L | Ø40x113L | 46 | 172 | 6,000 |
CH-10LL |
40 | 6 | 10 | 170 | 70 | 17 | 153 | 15 | Ø32x35L | Ø65x168L | Ø40x98L | Ø40x113L | 46 | 220 | 6,500 |
CH-12 |
50 | 8 | 12.7 | 135 | 75 | 13 | 100 | 15 | Ø35x40L | Ø78x110L | Ø48x117L | Ø48x95L | 52 | 150 | 6,100 |
CH-12LL |
70 | 8 | 12.7 | 252 | 50 | 20 | 203 | 20 | Ø38x45L | Ø88x223L | Ø58x120L | Ø58x116L | 66 | 290 | 12,000 |
CH-20S |
250 | 9.5 | 20 | 195 | 45 | nan | 150 | 40 | Ø54x65L | Ø148x210L | Ø73x170L | Ø73x170L | 85 | 210 | 21,000 |
CH-20L |
250 | 9.5 | 20 | 300 | 35 | nan | 254 | 40 | Ø54x65L | Ø148x285L | Ø73x170L | Ø73x170L | 85 | 330 | 21,000 |
CH-30L |
400 | 12 | 32 | 417 | 28 | nan | 305 | 75 | Ø97x125L | Ø245x400L | Ø97x265L | Ø107x253L | 127 | 450 | 70,000 |