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Topic Date User

anchor testing rig 9-Oct-2010 At 1:17:20 AM GPage

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The main reason I set up this rig was to be able to test my ringbolts to failure so that I could then offer some kind of rating, as an example if my rings broke at 50 kn I'm not going to rate them at 45 kn I would allow a big safety factor and rate them to 20-25. I sent some to mike and he tested to 40 kn with no sign of stretching or failure so the 75 kn is very probable seeing as the have stretch quite a bit.
The ram I bought was sold as a 10 ton ram(98kn), my calculations of the pressure surface would mean it has a 1.4 mm thick wall to produce 10 ton at it's max pressure rating. I don't believe the wall would be that thin so I have based my calculations on a 3mm wall , thus reducing the max force of the ram to about 90kn, not 85 as I first posted. So if anything the figure should be slightly higher if I were to accept the manufacturers specs.
I will send you a pic in a couple of days mike.