Spherical bearings: GE..E, GEG..E, GEZ..ES and GEEW..ES Inch spherical bearing: COM Spherical bearings: GE..C and GHM-T Pillow ball spherical bushings insert type Ball: chromium steel 100Cr6, heat treated, chrome-plated Race: chromium steel 100Cr6, mid-carbon steel or alternative materials are available Liner: PTFE available