PDA

View Full Version : heat



gero1
02-26-2009, 08:42 AM
anyone know what temp the wheel bearings on a trailer run???

Craig S
02-26-2009, 08:46 AM
I just put my bare hands on the bearing cap (25 miles, then every hundred more or less)...you mean there's more to it than that?

glashole
02-26-2009, 08:52 AM
trailers have bearings??

VetteLT193
02-26-2009, 09:01 AM
Mid 100's is normal, (150 degrees). Could be plus or minus a lot depending on use (highway, in town / speeds overall), tire size, brakes/no brakes, etc.

BlownCrewCab
02-26-2009, 09:39 AM
if you have Too much grease they'll get hot, grease stores heat very well. too little grease they get very hot and fail, to little grease they get untolerable hot to the touch. after 30+ miles if it's not really hot to the touch you shoule be fine.

BigGrizzly
02-26-2009, 11:21 AM
Vette has it right. You will also find that if you have breaks on one axel they will run warmer maybe 30 degrees. Tiedowns stainless disks run about 60 or more hotter.

BUIZILLA
02-26-2009, 02:05 PM
125*-135* at 65 mph. 138*-142* at 73 mph

that's with synthetic grease

documented.... :wink:

fogducker III
02-26-2009, 02:21 PM
Wouldn't tire size make a difference as well? Smaller tires, faster spinning bearings...? Just thinking out loud.........

VetteLT193
02-26-2009, 02:53 PM
Wouldn't tire size make a difference as well? Smaller tires, faster spinning bearings...? Just thinking out loud.........

yeah, that's what I was trying to say.

Lots of variables overall. mid 100's ok. 200 not so ok.

The Hedgehog
02-26-2009, 03:18 PM
Really dang hot on a summer day when towing an X-18 to Tex's shop. Hot enough to disintegrate all sorts of stuff.

I guess that most of us have been there at some point:frown:

dsparis
02-26-2009, 03:27 PM
I run the ones with gear oil in them. On a hot day after highway speeds I get 115-125 with a non contact thermometer. A great inexpensive tool to have.

Planetwarmer
02-26-2009, 03:36 PM
I use helicopter skids on my trailer. I dont have to worry about bearings at all the way. Or marker lights for that matter!

DonziJon
02-26-2009, 04:43 PM
anyone know what temp the wheel bearings on a trailer run???

Here's a Common Sense answer to your question. This is what I do: Grasp the wheel hub (The bearing is inside) like you would hold a coffee mug. If you can hold on to it ..say ..indefinitely.. then the temp..and therefore the bearing..is FINE. If the hub is TOO Hot to hold on to.. It's TOO Hot and you need to do something about it pretty soon. Generally, I find my bearings run ..maybe Luke Warm. Luke warm is fine. John

yeller
02-27-2009, 01:41 AM
Here's a Common Sense answer to your question. This is what I do: Grasp the wheel hub (The bearing is inside) like you would hold a coffee mug. If you can hold on to it ..say ..indefinitely.. then the temp..and therefore the bearing..is FINE. If the hub is TOO Hot to hold on to.. It's TOO Hot and you need to do something about it pretty soon. Generally, I find my bearings run ..maybe Luke Warm. Luke warm is fine. JohnGood answer. I go by the 'touch' method as well, but the above is still too generic of an answer. It depends on the landscape as well. I defy anyone to hold onto a hub with brakes after coming down a hill.