Cam followers supplied by China Bearing(Tianjin)Import&Export Co.,Ltd are available in three basic designs, KR design,NUKR design,PWKR design.KR design cam followers are fitted with a needle roller and cage assembly. They are also available with a full complement needle roller set. KR design cam followers without a designation suffix or with the designation suffix B have a narrow gap between the outer ring and the two flanges that serves as a gap-type seal.KR design cam followers are also available with an axial sliding ring made of polyamide 66 on both sides, identified by the designation suffix PPA or PPSKA. Please dont hesitate to contact me for more information.D*b*B part numbers16 6 28 KR 1616 6 28 KR 16 PPA16 6 28 KR 16 PPSKA16 6 28 KRV 16 PPA16 9 28 KRE 16 PPA19 8 32 KR 1919 8 32 KR 19 PPA19 8 32 KR 19 PPSKA19 8 32 KRV 19 PPA19 11 32 KRE 19 PPA22 10 36 KR 22 B22 10 36 KR 22 PPA22 10 36 KRV 22 PPA22 13 36 KRE 22 PPA26 10 36 KR 26 B26 10 36 KR 26 PPA26 10 36 KRV 26 PPA26 13 36 KRE 26 PPA30 12 40 KR 30 B30 12 40 KR 30 PPA30 12 40 KRV 30 PPA30 15 40 KRE 30 PPA32 12 40 KR 32 B32 12 40 KR 32 PPA32 12 40 KRV 32 PPA