Designed for large-diameter and extended-length fasteners, this 1-Die 2-Blow Long Stroke Large Size Cold Heading Machine enhances forming capacity within a single-die, two-blow structure. The extended stroke mechanism enables increased material displacement and longer shank formation while maintaining controlled head shaping in a continuous cycle.
TAICHUANG, as a factory in China, supplies this heavy-duty cold heading solution for manufacturers producing oversized bolts and long structural fasteners that exceed the forming range of standard short-stroke systems. The machine focuses on stable deformation control, material strength retention, and dimensional consistency under higher forming loads.
|
Model |
Max. Blank Diameter/mm |
Blank Length/mm |
Cut-off Length/mm |
Stroke/mm |
Capacity/pcs/min |
Main Die Diameter/mm |
The Initial Punch Die Diameter/mm |
The Precise Punch Die Diameter/mm |
Cut-off Die Diameter/mm |
|
D12-70 |
Φ7.0-15 |
70 |
90 |
120 |
60-70 |
Φ80*120 |
Φ55*120 |
Φ55*120 |
Φ45*45 |
|
D12-150 |
Φ7.0-15 |
150 |
170 |
190 |
40-50 |
Φ80*200 |
Φ60*180 |
Φ60*180 |
Φ45*60 |
|
D12-200 |
Φ7.0-15 |
200 |
220 |
250 |
30-40 |
Φ88*260 |
Φ60*180 |
Φ60*180 |
Φ45*60 |
|
D12-250 |
Φ7.0-15 |
250 |
270 |
300 |
30-40 |
Φ88*330 |
Φ60*180 |
Φ60*180 |
Φ45*60 |
|
D12-300 |
Φ7.0-15 |
300 |
320 |
330 |
25-35 |
Φ88*360 |
Φ60*180 |
Φ60*180 |
Φ45*60 |
|
D12-450 |
Φ8.0-16 |
450 |
480 |
550 |
20-30 |
Φ90*540 |
Φ60*270 |
Φ60*270 |
Φ45*60 |
|
D16-180 |
Φ8.0-16 |
180 |
210 |
240 |
35-40 |
Φ98*220 |
Φ65*180 |
Φ65*180 |
Φ60*80 |
|
D16-450 |
Φ8.0-16 |
450 |
480 |
550 |
20-30 |
Φ98*540 |
Φ60*270 |
Φ60*270 |
Φ60*80 |
|
Model |
Cutter Size/mm |
Main Motor Power/kw |
Volume(L*W*H)/m |
Weight/kg |
|
D12-70 |
16*50*125 |
Level 6 - 15kw |
4.50*2.00*1.32 |
7900 |
|
D12-150 |
18*60*125 |
Level 6 - 18.5kw |
5.20*1.90*1.80 |
14000 |
|
D12-200 |
18*60*125 |
Level 6 - 18.5kw |
5.20*1.90*1.80 |
14300 |
|
D12-250 |
18*60*125 |
Level 6 - 18.5kw |
5.20*1.90*1.80 |
15000 |
|
D12-300 |
18*60*125 |
Level 6 - 18.5kw |
5.20*1.90*1.80 |
15800 |
|
D12-450 |
18*60*125 |
Level 6 - 22kw |
6.50*2.25*2.10 |
20800 |
|
D16-180 |
20*60*125 |
Level 6 -30kw |
4.40*2.10*1.95 |
20800 |
|
D16-450 |
20*70*125 |
Level 6 - 22kw |
6.50*2.25*2.10 |
21000 |
Longer stroke travel allows greater material movement during each blow. Instead of compressing material within a limited displacement window, the system provides additional forming distance, supporting:
Long shank bolt production
Larger diameter head formation
Improved metal flow distribution
Reduced risk of underfill in oversized parts
The two-blow sequence separates upsetting and final head shaping, ensuring stable geometry even when forming larger volume parts.
Large-size fasteners require stronger frame rigidity and balanced impact absorption. This 1-Die 2-Blow Long Stroke Large Size Cold Heading Machine is developed with:
Reinforced machine frame structure
Stable crank and slide motion control
Controlled impact transmission
Enhanced alignment accuracy
These structural characteristics support consistent performance in demanding large bolt production environments.
Commonly applied in manufacturing:
Structural construction bolts
Heavy machinery fasteners
Wind power anchor bolts
Large-diameter industrial bolts
Infrastructure engineering fasteners
Material compatibility includes carbon steel and alloy steel grades typically used in structural applications.
Our 1-Die 2-Blow Long Stroke Large Size Cold Heading Machine is generally considered when:
Bolt length exceeds standard stroke capability
Larger head volume requires greater material movement
Structural bolts demand higher forming stability
Production involves medium-to-large diameter fasteners
Standard 1-Die 2-Blow systems reach capacity limits
It provides an expanded forming range without transitioning into multi-die complex systems.
Q1: What is the advantage of long stroke compared to standard stroke?
Long stroke enables greater material displacement, making it suitable for longer bolts and larger head volumes.
Q2: Is this machine only for large diameter bolts?
It is optimized for large and long fasteners, but can also handle medium-size parts depending on tooling setup.
Q3: Does long stroke affect dimensional accuracy?
When properly calibrated, the extended stroke improves material flow control and reduces underfill risks in large parts.
Contact us freely for any inquiries on our products by following:
Email: sales03@gdtaichuang.cn
Telephone: +86-757-85755398
Fax: +86-757-85765865
Mob: +86-18576574047
24 hours on line contact:
whatsApp: 8618576574047
Address
Building 1, Ruixin Technology Park, No. 206 of Xingye North Road, Shishan Town, Nanhai District, Foshan, Guangdong, China. 528225
Tel
If you have any enquiry about quotation or cooperation, please feel free to email us at sales03@gdtaichuang.cn or use the following inquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.
Precision-Engineered Customization/Patent-Protected Innovation
Cost Savings: 30% average reduction vs. trading companies
Quality Control: Live video factory audits during production
Global Compliance Guarantee: Pre-verified for FDA/ISO/ROHS standards.
