... Z1,Z2,Z3 Vibration: V1,V2,V3 Spherical plain bearing Marterial: Gcr15Seal material: Rubber,FerrumNoise: Z1,Z2,Z3Vibration ... : V1,V2,V3Clearance: C2,C3,C4Bore diameter 6~60mm<Bearing Type>1) 16000 series: 16001, 16002, 16003, 16004 ... : 638, 6300, 6301, 6302, 6303, 6304, 6305, 6306, 6307, 6308, 6309, 6310, 6311, 6312, 63305, 63306, 63/285 ... designed bearings for motorcycle Trailer Spherical plain bearing