Any anecdotal testing on 8020 roller bearing load capacity?

a frame , a lower roller mounted in the frame , an upper roller mounted in the frame , vertically - ad- justable bearing

roller bearings Hardened and lapped spiral bevel gears provide the drive from the main spindle D FIG 26 T

high roller bonanza slot Tee slot fixing type : using DIN 931933 hex- headed bolts b S -B type Vee Bearings & Rails Linear Bearings & Shafts Combined Roller Bearings &

slot car controller We experimented a little with these linear slide bearings as well and moved from there to creating barrel type rollers that would ride in the