A standard type trailer for around 200kg of camping gear.

certainly do
have heavy duty bearings though ....not the standard holden or ford roller skate bearings

Dean,
Have used a standard 6 x 4 garden type trailer. Make sure you pack the bearings well before the trip and check every few days for free play and grease.
The only place it could let you down is that they tend to have slipper springs which can have problems.
Just go slow on the BAD bits of road and enjoy yourself
Vince

If you stick to around 200kg then you should have no worry. As previously said repack the bearings and adjust accordingly every year at least. Watch for water ingress in the bearingswhen traversing rivers etc.
Happy wanderings.

I have a 7x4 box trailer with a camper bolted on top. All up it weights 650kg I run "roller skate" holden wheel bearings and have never had a problem but I repack them regularly and replace them every couple of years.

Last year I came across a guy about 30k north of Coen on the way up to Cape York. He had a garden trailer that would have been lucky to gross 500kg. It had broken a spring on the passenger side. Because it had slipper springs the left hand side tyre shot out the back of the trailer putting a 90deg bend in the axle. He ended up abandoning it. The road from Cairns to Coen is "highway and smooth dirt/corrugated/potholed roads, not 4x4 tracks".

Based on that I won't go far off the bitumen unless I have a minimum 4 leaf spring pack with shackles front and back.

Why are we paranoid about trailer wheel bearings?
We drive 1000's of kms in our cars & never give a thought to the front wheel bearings.
After all, they are the same bearings doing the same job.

have shackel to shackel springs fitted not slipper springs & get some bearings buddies to keep the bearings full of grease & you shouldnt have any problems