4-Station Bolt Former

As part of the cold heading machine range, the 4-station bolt former supplied by TAICHUANG extends forming capability through an additional heading stage. The four-step process allows more gradual material redistribution and refined head shaping, making this configuration suitable for fastener designs that require closer dimensional control and greater forming flexibility. Choose us as your supplier and get a factory quote today!

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Product Description

A 4-station bolt former enhances the forming process by spreading deformation across an additional station. This allows material to flow more gradually during heading, reducing stress concentration and improving shape consistency for more demanding bolt designs.

Within cold heading machine applications, the extra station offers greater freedom in tooling layout and forming logic. It supports bolt heads with washers, flanges, or special contours that are difficult to achieve within a three-stage process. By controlling deformation step by step, the 4-station bolt former helps improve symmetry and surface quality.

TAICHUANG presents this bolt former option for buyers who need broader fastener design compatibility and are looking to balance forming complexity with stable production behavior.

Product specifications

Model	Unit	SJBF-44L	SJBF-64S	SJBF-64L	SJBF-84S	SJBF-84L	SJBF-84LL
Forging station	No.	4	4	4	4	4	4
Forging force	kgs	15000	45000	45000	75000	80000	80000
Max cut-off dia	mm	Φ6	Φ8	Φ10	Φ10	Φ10	Φ10
Max cut-off length	mm	70	100	145	110	200	230
Speed Range	pcs/min	160-250	140-250	80-150	120-220	50-130	60-120
P.K.O Stroke	mm	10	15	30	26	26	30
K.O.Stroke	mm	65	85	135	90	170	215
Main slide stroke	mm	100	136	210	140	270	370
Main motor	kw	11	15	15	22	22	22
Cut-off die size	mm	Φ20*30L	Φ30*45L	Φ30*55L	Φ35*50L	Φ35*59L	Φ35*60L
Punch die size	mm	Φ32*62L	Φ40*90L	Φ40*90L	Φ45*115L	Φ45*115L	Φ45*115L
Main die size	mm	Φ38*75L	Φ50*110L	Φ50*155L	Φ60*120L	Φ60*190L	Φ60*240L
Die pitch	mm	48	60	60	80	80	80
Machine dimension (L"W"H)	cm	277185118.5	350200170	380200170	420230190	560240220	650245220
Lifting reference weight	Ton	4.5	9	11	13.5	18	22
Normal bolt size	mm	2-4	3-6	3-6	5-8	5-8	5-8
Shank length of blank	mm	10-60	10-70	25-125	15-77	25-160	70-205

Model	Unit	SJBF-104S	SJBF-104L	SJBF-134S	SJBF-134L	SJBF-134LL	SJBF-134UL
Forging station	No.	4	4	4	4	4	4
Forging force	kgs	85000	85000	120000	130000	130000	155000
Max cut-off dia	mm	Φ12	Φ12	Φ15	Φ15	Φ15	Φ18
Max cut-off length	mm	135	190	145	200	305	450
Speed Range	pcs/min	95-160	70-130	100-150	75-120	50-80	32-60
P.K.O Stroke	mm	30	30	30	40	40	60
K.O.Stroke	mm	115	170	115	170	280	420
Main slide stroke	mm	190	280	200	270	380	580
Main motor	kw	30	30	30	37	37	45
Cut-off die size	mm	Φ45*59L	Φ45*59L	Φ63*69L	Φ63*69L	Φ55*70L	Φ58*80L
Punch die size	mm	Φ53*115L	Φ53*115L	Φ60*130L	Φ60*130L	Φ60*229L	Φ60*229L
Main die size	mm	Φ75*135L	Φ75*185L	Φ86*135L	Φ86*190L	Φ86*305L	Φ86*4540L
Die pitch	mm	94	94	98	110	110	110
Machine dimension (L"W"H)	cm	450260210	520260230	460270200	530280230	710310260	800350300
Lifting reference weight	Ton	17	21	22	26	38	50
Normal bolt size	mm	6-10	6-10	8-12.7	8-14	8-14	8-14
Shank length of blank	mm	15-110	20-160	20-110	25-160	60-270	120-400

Model	Unit	SJBF-164S	SJBF-164LL	SJBF-164UL	SJBF-204L	SJBF-204LL	SJBF-254SL
Forging station	No.	4	4	4	4	4	4
Forging force	kgs	220000	220000	230000	380000	380000	450000
Max cut-off dia	mm	Φ18	Φ20	Φ23	Φ23	Φ23	Φ30
Max cut-off length	mm	200	350	510	240	360	260
Speed Range	pcs/min	70-110	40-70	35-50	50-80	40-65	40-70
P.K.O Stroke	mm	45	45	60	50	50	40
K.O.Stroke	mm	170	320	510	220	320	210
Main slide stroke	mm	260	490	670	346	496	330
Main motor	kw	55	55	75	75	75	110
Cut-off die size	mm	Φ60*90L	Φ64*100L	Φ74*120L	Φ75*120L	Φ75*120L	Φ80*130L
Punch die size	mm	Φ75*185L	Φ75*185L	Φ75*250L	Φ90*215L	Φ90*215L	Φ120*270L
Main die size	mm	Φ100*190L	Φ100*345L	Φ100*510L	Φ125*240L	Φ125*345L	Φ140*250L
Die pitch	mm	120	120	120	140	140	160
Machine dimension (L"W"H)	cm	650310260	870320300	1000320340	760320300	870320320	830430330
Lifting reference weight	Ton	43	60	80	62	75	105
Normal bolt size	mm	10-16	10-16	12-20	12-20	12-20	14-27
Shank length of blank	mm	20-160	70-310	150-490	25-210	70-310	35-210

Model	Unit	SJBF-254L	SJBF-254LL	SJBF-304L	SJBF-304LL	SJBF-384LL
Forging station	No.	4	4	4	4	4
Forging force	kgs	450000	450000	600000	600000	900000
Max cut-off dia	mm	Φ30	Φ30	Φ38	Φ38	Φ42
Max cut-off length	mm	320	380	400/430	450	500
Speed Range	pcs/min	35-65	35-60	30-50	25-45	25-40
P.K.O Stroke	mm	45	45	50	60	60
K.O.Stroke	mm	280	315	330/380	420	442
Main slide stroke	mm	420	510	520/540	620	656
Main motor	kw	110	110	132	132	200
Cut-off die size	mm	Φ99*150L	Φ99*150L	Φ118*180L	Φ118*180L	Φ120*180L
Punch die size	mm	Φ120*270L	Φ120*270L	Φ140*270L	Φ140*300L	Φ150*300L
Main die size	mm	Φ148*300L	Φ148*345L	Φ185*355L/Φ185/380L	Φ185*460L	Φ215*480L
Die pitch	mm	160	160	200	200	235
Machine dimension (L"W"H)	cm	910420350	980420350	1000470460	1100490400	1200500410
Lifting reference weight	Ton	120	125	170	200	220
Normal bolt size	mm	14-27	14-27	24-30	24-30	24-42
Shank length of blank	mm	60-260	70-310	60-320/80-350	70-400	150-420

Forming Advantages

Additional forming step for complex head designs

Improved control of head symmetry and dimensions

Enhanced tooling flexibility

Broader fastener design compatibility

Application Fields

Automotive fasteners

Structural bolts

Machinery and equipment fasteners

Customized bolt designs

FAQ

Q1: How does a 4-station bolt former differ from a 3-station model?

The extra station allows more gradual forming and supports more complex bolt shapes.

Q2: Is it suitable for precision fasteners?

Yes, it is often selected for applications requiring better dimensional consistency.

Contact us

Email: sales03@gdtaichuang.cn

Telephone: +86-757-85755398

Fax: +86-757-85765865

Mob: +86-18576574047

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whatsApp: 8618576574047

4-Station Bolt Former

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Contact Info

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Address

Building 1, Ruixin Technology Park, No. 206 of Xingye North Road, Shishan Town, Nanhai District, Foshan, Guangdong, China. 528225
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Tel

+86-757-85755398
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E-mail

sales03@gdtaichuang.cn

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.