Well, probably this post looks more promotional but we will try to make it more technical to tell more about Promecam Press Brake tools and in particular about 4V bending dies.
First, this is the most universal product, mostly ordered by the customers and usually supplied as a “starting set” with the new press brakes by the manufacturers.

To tell more about functionality let us speak a little bit first about the complete system. Promecam system (or European type / Euro) for lower tooling has a 60 mm bottom width with a center at the middle, it means half, i.e. 30 mm. Bigger machines could have also the die support for 90 mm but 95% of the machines have 60 mm. Also, the Promecam system has a holding principle for dies for complete length which means that you can install also sectioned tooling and even small pieces 10–15 mm everywhere you wish.
For the Promecam system, it is standard and for other systems (WILA, Trumpf, LVD, etc.) it could be also installed with the use of the adaptors.
Because it is completely centered on the Promecam system there is no Multi-V dies because you cannot adjust V-openings towards the center so 4 sides with the opening is the maximum possible.
Also really is quite good if you have different thicknesses to bend on your press brake to have one set of tooling for all — it saved a lot: of time for tooling installation, the unnecessity to store additional sets, and finally also the money that was spent for the tooling! For example with V=50 as the maximum opening you can work with a thickness of 6 mm.

4V die is quite good for all of this — you can cover all ranges you need. Unfortunately, no V8 or V10 to bend 1 mm thickness but you can bend it also with V16 with a bigger radius.
4V die with a height of 60 mm is the minimum possible height of the die for the press brake. This allows also to use of this die even for various manual press brakes, ironworkers, hydraulic presses, or bending equipment for garage presses where opening could be very limited and installation of tall bending tooling is completely not possible.
For sure there are a lot of limitations such as the width of the die (so you cannot make small distance Z-bends), height, and fixed openings. Meanwhile, it is the best product as price-possibilities value and every time will be requested and ordered.

It could have a triangle polyurethane insert to be put in the V50 opening and allow the additional radius bending inside the polyurethane — one more big advantage to use as the holder for insert without any additional costs. We have seen also individual tooling made like roller insert to bend with smaller opening with a small possible radius of bending.
Standard 4V dies are available with 88 and 85 degrees but also it is available with additional types with 60 degrees and smaller openings — to bend thinner materials compare to the main one and even with an angle less than 85.
We should speak in general about why also press brake users should have the possibility for more configurations with their tooling. As it is known the bigger opening with the same thickness allows to reduce the tonnage of bending. The internal bending radius will be bigger but it will be possible to bend thicker materials or reduce the limits if they appeared. When you cannot enlarge the opening you can risk that some applications could be even impossible for your machine, for example, if it is low tonnage press brake with 20–30 tons of force or the press brake without the complete force distribution. But this is not also about the bending thickness — some punches are quite fragile and to use them with medium thicknesses you should go with a bigger opening — there is no other way.

In USA 4V dies are also offered as complete polyurethane pieces for the customers. In Europe, we don’t use such solutions but if it is necessary to eliminate marks and scratches it could be used the bending film to be placed on the bending die.
Under the request we offering also 4V dies with an external size 90×90 with V-opening up to V=70. We can offer special configuration and geometry as well.

This post is also published on @Medium

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