Is someone know the load rating of the chevy Bolt front hub?
The Bolt uses the latest version of GM's Gamma platform
, with earlier versions used by the Chevrolet Spark, Sonic, Trax, and others. Unfortunately, the Bolt is among the heaviest of the vehicles on the platform, so the components may not have much more capacity than required by the Bolt.
The most conservative estimate would simply be to assume that the hub capacity corresponds to the gross axle weight rating for the front axle of the vehicle. That's shown on the placard on the driver's door edge or frame, and is likely between 1022 kg / 2253 lb and 1013 kg / 2234 depending on year and possibly trim level. They are very unlikely to have changed the hubs, so the higher values probably apply to all Bolt hubs and hub carriers... the springs might vary.
The Trax apparently has front GAWR which can be a bit higher: in a quick search (of for-sale ads which include an image of the loading placard) I'm seeing 1065 kg / 2348 lb. It seems very unlikely that the Trax has a different hub or bearings, so the Trax numbers could be assumed.
I would like to replace the rear bearing housing (part 7) and put a disc brake on the Vanagon. The Vanagon rear bearings are one 35x75 ball bearing and one 35x62 roller bearing. My bet is the roller bearing can take a lot of weight and replace it by the double row angular contact ball bearing from the Bolt hub couldn't be enough for a Vanagon Westfalia...
I agree that the VWs rear GAWR will be higher than that of the Bolt. One source (Roadhaus
) reports for 1984-1991:
- 2WD Vanagon or Camper: GAWR Rear 2866 lbs
- 4WD Syncro Vanagon or Camper GAWR Rear 3042 lbs
The same source has a table of Vehicle Actual Loaded Weight
for various years and variants, and all rear GAWR are substantially higher than the Bolt front GAWR.
With any luck, the Bolt components have lots of capacity margin. If you find the same bearings used in another model with a higher GAWR, that would be a good indication.