Spherical plain bearing Marterial: Gcr15 Seal material: Rubber,Ferrum Noise: Z1,Z2,Z3 Vibration: V1,V2,V3 Spherical plain bearing Marterial: Gcr15Seal material: Rubber ... ,Z3Vibration: V1,V2,V3Clearance: C2,C3,C4Bore diameter 6~60mm<Bearing Type>1) 16000 series: 16001, 16002, 16003, 16004, 16005, 160102 ... , EE3, EE48) Specifc designed bearings for motorcycle Trailer Spherical plain bearing