- This topic has 9 replies, 1 voice, and was last updated 6 years, 4 months ago by Ross Weiter.
Does anyone know where I can buy stainless steel maillons in Perth? Climbing Anchors is out of stock and I can’t seem to find them anywhere else. For use as lower offs.RossGuest
Use a shop on the web. Not ebay.GeorgeGuest
Ross – Do you have any online stores you’d recommend?
George – I searched for Mainpeak Industrial but it just comes up with the general Mainpeak site, where they don’t stock them. Do you have a link for Mainpeak Industrial?ScottGuest
Try Ferno in KewdaleMarcGuest
Thanks Ross. Order placed, and half the price I was expecting!andrew wilsonGuest
Address: 2/22 Hines Rd, O’Connor WA 6163
Phone: (08) 6103 4500
but call before you visit
Just a quick one how does the TDL (Tested Deformation Load) relate to working load limit or breaking load?
The ones from Miami have a TDL of 1120 kg.
Maillon Rapide Brand 8mm 316 stainless have Working load limit of 1100 kg and a BLL of 5500 kg so does that meant the TDL is going to be 2200kg or more ?Ross WeiterGuest
Clip both Miami maillons and you have 2200kg TDL so for anchor-only (no lead falls) duty I see no prob.
…the point by Andrew is still a good one: I would not place these as anchors on a multipitch. The climber could clip (only) one of the maillons as a runner for starting the next pitch above the anchor and then take a factor 2 fall on it (any fall on an anchor will be close to a factor 2), which it may not hold. In theory the climber should really clip the hanger and not the maillon, in practice it is probably best not to use it there at all.
But again, if there is no pitch above the anchor then I see no probs.Ross WeiterGuest
Another thing……climbing gear is generally rated to around 20kN or 2000kg (although this varies from 10kN for small cams to 30+kN for big locking carabiners i.e. depending on the item). That is the breaking load limit (BLL) and NOT the safe working load! Climbing gear is a bit weird in that it is stamped with the average strength at which it breaks, most industrial products I know of are labelled with WLL. Basically for climbing gear WLL=BLL…which any engineer would find outrageous, me included.
So if “Maillon Rapide Brand” mentioned by Andrew indeed has a BLL of 55kN (5500kg) then is about twice as strong as your harness, rope or draws. Clearly this serves no purpose as your gear is only as good as the weakest link (for climbing…., that’s not to say the rating is useless as high access work or via ferratas require higher ratings than climbing). I hope this helps.