The Ronen® Cold Forging 7 Station Bolt Former Machine completes the entire process of bolt manufacturing on a single production line: wire feeding, upsetting, head forming, trimming, and pre-threading, with a total of seven stations. There is no need to move the raw materials between the machines.
The Cold Forging 7 Station Bolt Former Machine transforms metal wire into high-precision bolt blanks through seven consecutive cold extrusion processes. It can handle wires of different diameters and produce bolts that meet high precision and strength requirements.
The Cold Forging 7 Station Bolt Former Machine is a sophisticated cold forging machine specifically designed for manufacturing bolts with complex heads or those of larger sizes. It undergoes seven consecutive forging processes on a single wire billet. This multi-stage process enables significant metal displacement and allows for the formation of complex features, such as deep drive grooves or grooves beneath the head.
The seven stations of the Bolt Former Machine have distinct functions: Station 1 is for feeding and cutting; Station 2 is for initially forming the head shape; Station 3 is for pre-forging the head; Station 4 is for precisely shaping the head; Station 5 is for forming the step of the rod part; Station 6 is for shaping the rod part; and Station 7 is for the final finishing. The entire process is completed automatically.
The Cold Forging 7 Station Bolt Former Machine requires a highly precise wire feeding and cutting system. The wire must be fully straightened before it can be cut into precise-length blanks. Consistent blank volume is crucial because the material will be distributed through multiple forming stages to achieve the final defect-free head shape.
| Model | Unit | RNBG-63S | RNBF-83S | RNBF-83SL | RNBF-103S | RNBF-103L | RNBF-133S | RNBF-133SL | RNBF-133L |
| Forging station | NO. | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Forging force | Kgf | 35.000 | 60.000 | 60.000 | 80.000 | 80.000 | 115.000 | 120.000 | 120.000 |
| Max.cut-off dia | mm | ø8 | ø10 |
ø10 |
ø12 |
ø12 |
ø15 |
ø15 |
ø15 |
| Max.cui-off length | mm | 80 | 80 | 115 | 135 | 185 | 145 | 190 | 265 |
| Output rate | pcs/min | 150-240 | 130-200 | 120-190 | 100-160 | 85-140 | 90-160 | 80-120 | 60-100 |
| P.K.O.Stroke | mm | 12 | 15 | 18 | 30 | 30 | 30 | 40 | 40 |
| K.O.Stroke | mm | 70 | 70 | 92 | 118 | 160 | 110 | 175 | 225 |
| Main ram stroke | mm | 110 | 110 | 160 | 190 | 262 | 190 | 270 | 380 |
| Main motor power | Kw | 11 | 15 | 18.5 | 22 | 22 | 30 | 37 | 37 |
| Overall dims.of cut off die | mm |
ø30x45L |
ø35x50L |
ø35x50L |
ø45x59L |
ø45x59L |
ø63x69L |
ø63x69L |
ø63x69L |
| Overall dims.of punch die | mm |
ø40x90L |
ø45x90L |
ø45x125L |
ø53x115L |
ø53x115L |
ø60x130L |
ø60x130L |
ø60x229L |
| Overall dims.of main die | mm |
ø50x85L |
ø60x85L |
ø60x130L |
ø75x135L |
ø75x185L |
ø86x135L |
ø86x190L |
ø86x305L |
| Die pitch | mm | 60 | 70 | 70 | 90 | 94 | 110 | 110 | 110 |
| Approx.weight | Ton | 6.5 | 11.5 | 12 | 15 | 19.5 | 20 | 26 | 31 |
| Applicable bolt dia | mm | 3-6 | 5-8 | 6-10 | 6-10 | 8-12.7 |
8-12.7 |
8-12.7 |
8-12.7 |
| Shank length of blank | mm | 10-65 | 10-65 | 15-90 | 15-110 | 20-152 | 20-100 | 20-160 | 50-220 |
| Overall dims | mm | 5300*2900*2300 | 6000*3100*2500 | 6500*3100*2500 | 7400*3500*2800 | 9000*3400*2900 | 7400*3500*2800 | 10000*3690*2900 | 10000*3690*3000 |
The core selling point of the Cold Forging 7 Station Bolt Former Machine is "multi-station step-by-step processing", which enables the production of complex structural bolts with extremely high precision. Its seven workstations gradually shape and refine, ensuring that every detail is properly arranged. The concentricity between the head and the shaft is extremely good.
