... Less coefficient of friction 3 UCP204,UC204,Long life 2012 NEW! KOYO Pillow Block Bearing UC204 UCP204SKF NSK TIMKEN FAG NTN ... BEARINGS1)Materal used: GCr15—China.(AISI)52100—American,(Din)100Cr6—Germany.2)Shield/closure: open bearing, Z, ZZ, RS, 2RS.3 ... UCP217 8595.231024783252832185 8634.1M20 UC217UCP21890101.632726288273033198 9639.7M22UC218 2012 NEW! KOYO Pillow Block Bearing UC204 UCP204