... circle assembling extrusion, lubricating oil and oil hole. Inner diameter less than 15mm bearings, no lubrication oil and oil hole. Can bear radial ... With female threaded rod ends, materials for carbon steels, No lubrication oil groove. Can bear radial load and any direction less ... out-of-band thread, materials for carbon steels, No lubrication oil groove, can bear radial load and any direction less ...