Ball bearing swivels, but I'm pretty sure the wheels have sleeve bearings. I have these on my lumber cart which weighs about 1500 pounds when fully loaded. They work well on a smooth concrete floor.
The plate dimensions are 2.76 x 3.78 and the distance between the bolt holes are 1.74 x 2.84
I have found them at every Home Depot so far.
Mine have not rusted, just put more grease on the bearings if it sits outside.
Thank you for your inquiry with Everbilt. 3" is the largest size we have in the steel swivel caster.
Thank you for your recent inquiry with Everbilt. The bolt holes size are 0.312 in. If you have additional questions, please feel free to contact us at 1-800-531-3342 ext. 3600 Mon-Fri from 8am to 5pm EST and a Product Specialist will be glad to assist
Thank you for your recent inquiry with Everbilt. This caster would work, but may leave marks when rolling it around on concrete and pavers. To avoid leaving marks, a TPR caster would be a better option. You may also want to consider one with a brake to keep it in place when set to position. If you have any further questions, feel free to give us a call at 1-800-531-3342 ext. 3600 Mon-Fri from 8am to 5pm EST and a Product Specialist will be glad to assist
The specifications state that each caster will support 300 pounds. Based on that, four casters would be capable of safely supporting an evenly distributed load of 1200 pounds.
The wheels are cast and seem to be pretty flat. The veering scare me a bit but seem to be holding up fine. I have at least a thousand pounds on my shelves that I purchased from costco and welded them too.
1 3/4" x 2 7/8"