caravan axles.

Submitted: Sunday, Aug 18, 2013 at 11:45
ThreadID: 103907 Views:2625 Replies:3 FollowUps:6
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Just wondering if anyone can help, what size axle (square) and what size electric brakes
a 1950 KG GVM caravan should have, Thanks in advance.

John
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Reply By: Nomadic Navara - Sunday, Aug 18, 2013 at 11:56

Sunday, Aug 18, 2013 at 11:56
Are we talking single or dual axle suspension? Vans of that size are made with both.

More important than axle dimension is the type of stubs (and hence bearings) are on the ends. This site will give you the capacity of each of the components in your suspension.
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Follow Up By: John and Maureen W (NSW) - Sunday, Aug 18, 2013 at 13:30

Sunday, Aug 18, 2013 at 13:30
Thanks Peter, I have a van with a single 45mm square axle, it has Landcruiser hubs 6 stud and 10 inch brakes. The axle is bent, I was led to believe it should be 50mm with 12 inch brakes.
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Follow Up By: garrycol - Sunday, Aug 18, 2013 at 14:21

Sunday, Aug 18, 2013 at 14:21
I just recently upgraded my box trailer from 750kgs to 1000kgs with brakes etc. In doing so I had to look at axles as I had the round 38mm axle and went the 40mm square which is rated at 1000kgs - I looked at the 45mm square and if I recall correctly it is only rated at 1400kgs so if you have that with a 1900kg GVM then it is underrated.

I would go the 50mm square.

Garry
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Follow Up By: garrycol - Sunday, Aug 18, 2013 at 14:27

Sunday, Aug 18, 2013 at 14:27
Sorry 1500kgs

45mm 45mm Axle

50mm
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Reply By: Michael ( Moss Vale NSW) - Sunday, Aug 18, 2013 at 19:09

Sunday, Aug 18, 2013 at 19:09
Hi John, Go 50mm Square axle with Parallel bearings as a minimum. Parallel bearings refer to the outer bearing as the same large size as the inner bearing. Bigger outer bearing is rated for higher loads. I recently upgraded my off road trailer to the same as i mentioned above from Alko Melbourne, the complete axle ready to install. I bought 10" electric brakes but you may need 12" as you mentioned. My complete assembled unit was about $1250. If you buy from ebay or the net you may be buying bits and pieces assembled from parts made in several countries that may not be totally compatible. Hope this helps! regards Michael
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Follow Up By: Michael ( Moss Vale NSW) - Sunday, Aug 18, 2013 at 19:14

Sunday, Aug 18, 2013 at 19:14
John, I also sourced 1/2" diameter high tensile 'U' Bolts to replace the normal mild steel ones that are readily available. 5/8" diameter are available but I had trouble finding them so I went for the smaller 1/2" diameter high tensile ones. Michael
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Follow Up By: Nomadic Navara - Sunday, Aug 18, 2013 at 20:40

Sunday, Aug 18, 2013 at 20:40
If you look through the site I linked to in my previous you will se you need a 2 tonne braked axle. The axle will be 50 mm square or 56 mm round with 2T stub profile with 2 T bearings and 12" brakes.

Parallel stubs are only good for 1600 kg rating. Straight braked axle.

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Follow Up By: Michael ( Moss Vale NSW) - Sunday, Aug 18, 2013 at 21:15

Sunday, Aug 18, 2013 at 21:15
Hi Peter, I mentioned that would be the bare minimum! I wasn't sure if it was 1600KG or 1800KG for parallel bearings. It sounds like the unit that John has is way under rated! Michael
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Reply By: olcoolone - Monday, Aug 19, 2013 at 08:48

Monday, Aug 19, 2013 at 08:48
Phone one of the trailer places, to many experts here!

At least with a trailer place you know you will get the right advice and if wrong someone to fall back on to for help.
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