Lishui ouyi bearing manufacturing Co.,Ltd ,is located in Zhejiang ,China .We specialize in linear ball bearings ,plain shaft axis ,linear guide bearings ,needle roller bearings ,rod end bearings,radial bearings,ball screw and so on .The outer spherical has a axial seam; at both sides of the outer with seals, lining PTFE on the surface; the inner chromium plated.