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Thread: Camper trailer axle sizes

  1. #1
    Join Date
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    Camper trailer axle sizes

    For those of you that have built their own trailers recently, what size axle did you use, and what did your trailer weigh in at when you got it registered?


    My understanding is that a 45mm square axle is rated to 1400kg and a 50mm square axle is rated at 2000kg. Is this correct? Is a 45mm square axle sufficient for a camper/work trailer? Of course the major factor here is how heavy is the trailer and what weight do i want to be able to carry.......

    Cheers, Phill

  2. #2
    Join Date
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    Google Alko and they will have all the sizes and recommended weight divisions for your axle.

    The bearings must be taken into consideration as well.

    Edit: Here's the link.

    http://www.alko.com.au/vehicle/axles/irs.html


    Cheers.
    Last edited by feral; 17th June 2008 at 09:24 PM. Reason: To provide link to site.

  3. #3
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    Axel Size ?

    I used 45mm rated at 1500 kg, reasoning that although laden weight max 750kg to 800kg the 1500kg rating is for good roads and need a margine for the stranes of rough trails, also springs should be carefully selected, Toyota front leaf springs are a cheep source of springs and you can add or subtract leafs to suit your intended load.

    Rob

  4. #4
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    May not be of any help but
    I have a camper trailer (the one where the top goes up and the ends come out) faily standard affair but it has 32" wheels, new draw bar that is 600mm longer and a rear bump bar fitted to add a lifting device for lifting my tinnie on/off (lifting device not added yet, it will weigh about 55kgs).
    Had it weighed today and I thought it would be about 400kg, rude shock when it weighed in at 700kg (that was without cargo box on drawbar and contents which will include gas bottle, battery, 18hp tohatsu outboard etc)
    So my new estimate of fully loaded rig will be about 1200kg, so I order my electric brake D1 hubs today (local store a bit cheesed of because I had previously order just D1 hubs and stubs). Looking at the size of the 1450 kg stubs today (square section) I would thing I may have to use a piece of 65mm x 5 rhs for axle. Be interesting to see the new ones when they come. I would always prefer to go slightly on the over size just to build in a safety factor.
    cheers
    blaze

  5. #5
    Join Date
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    My soft floor camper has a 45mm square axle with Ford parallel bearings. This axle size seems to be the norm on an off road camper.
    Complianced at about 550kg but no idea what it actually weighs loaded.

  6. #6
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    The bearings are an important factor.
    Holden bearings = 1000Kg per axle
    Falcon/Slimline bearings = 1450 Kg per axle
    Landcruiser/parallel = 2000Kg+

    What I find really interesting is that they specify the size of the axle but never specify the grade of metal.

    The other interesting thing is that you will hear that you can't have a welded axle however every truck lazy axle and semi-trailer axle are welded.

    Diana

    P.S. did you know that according to the ADR the safety chain is supposed to be stamped with it's capacity on every link. Try buying rated and branded chain at Camac!

    You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.

  7. #7
    Tombie Guest
    Quote Originally Posted by Lotz-A-Landies View Post
    Diana

    P.S. did you know that according to the ADR the safety chain is supposed to be stamped with it's capacity on every link. Try buying rated and branded chain at Camac!
    Did you also know, by law, that the shackles used to attach the chain to the vehicle are to be rated same / higher than the chain.

    Hands up those using rated shackles to attach a trailer - I do...

    $6.00 or less at Nobles... Cheap insurance.

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