Jörg 50 inch 14 gauge shear capacity

j c · Aug 13, 2020

I'm buying a Jörg 50 inch 14 gauge shear. It looks like it's good quality, made in the Netherlands.

My question is, do you think this will cut a 48 inch piece of 16 gauge 304 stainless ok? I did some test cuts with smaller pieces (4 and 8 inch) of the 304 16 ga and it was fine. I'm just worried about the whole 48" width. Any idea? The blades look pretty clean.

j c · Aug 13, 2020

Ok I just found an old tag online that shows the same model - the 4022 - and it says it will cut 18 gauge SS. Do you think that I would bust it up if I tried 16 gauge 304 SS at 48 inches?

rogertoolmaker · Aug 13, 2020

Shearing 304 SS 16ga on a shear rated for 14ga cold rolled.

j c said:
I'm buying a Jörg 50 inch 14 gauge shear. It looks like it's good quality, made in the Netherlands.

My question is, do you think this will cut a 48 inch piece of 16 gauge 304 stainless ok? I did some test cuts with smaller pieces (4 and 8 inch) of the 304 16 ga and it was fine. I'm just worried about the whole 48" width. Any idea? The blades look pretty clean.

The tensile strength of cold roll #4 temper sheet is 50000 lbs. per square inch.

#14ga. is .078 thick X 50000 lbs. per sq. in. X the length of cut divided by 2000 lbs. This will give you the tonnage required to shear the cut.

I did not consider the shear blade angle.

I would reduce the tonnage by 25% to 30% allowing for the shear angle of the blade.

The tensile strength for 304ss is 85000 lbs. per sq. in.

#16ga. is .059 X 85000 X The length of cut divided by 2000 equals the tonnage required to make the cut.
With this information it should allows you to make an educated judgement to shear or not to shear.

All The Best,
Roger

j c · Aug 13, 2020

So for the 14ga CR would it be: .078 x 50000 x (48 inches / 2000) = 93.6
Then, for 304 SS which is 51,500 psi, it would be: .059 x 51500 x (48 / 2000) = 72.9

So the 304 .059 takes less tonnage to cut? That would be great. Should that be my only concern? I was also concerned about the hardness of it, and if it would damage the blades for some reason more than CR. I'm not that familiar with power shears - I've only had a jump shear - so I don't know what causes the blades to dull, break, etc.

Also after I wrote this I found a capacity tag plate online for the shear. I'll try to attach it. Basically it says 18 gauge SS... in Dutch!

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