English model metric series: HK, BK, F, FH, FY, MF, MFH, MFY; TA..Z, TLA..Z, TAM, TLAM, YT, YTL. Inch Series: SCE, BCE, SCH, BCH, SN, B, BH, M, MH,; BA ... Z, BHA ... Z, BAM, BHAM, YB, YBH. Example: In HK XX YY XX model inscribed circle diameter height YYRS ------ a ring with the metric system for two seals 2RS ----- NAV4909 needle roller bearings, with the metric system P ---- --- for a ring, with the imperial system PP ------ for two seals, with the imperial system ASI / OH --- for hole HK, BA, TA..Z-- Piercing drawn outside ring needle roller bearings BK, TAM, TLAM-- Sealed drawn cup needle roller bearings F-- Piercing drawn cup needle roller bearings, full complement FY, YT-- Piercing drawn cup needle roller bearings, full complement (grease limit Bit) FH, YTL-- Piercing drawn cup needle roller bearings, full complement (heavy series) MF-- Drawn cup needle roller bearings, full complement MFH-- Drawn cup needle roller bearings, full complement SCE-- Piercing drawn cup needle roller bearings BCE-- Sealed drawn cup needle roller bearings SCH-- Piercing drawn cup needle roller bearings BCH-- Sealed drawn cup needle roller bearings SN-- Piercing drawn cup full Needle Roller Bearings B-- Piercing drawn cup needle roller bearings, full complement BH-- Piercing drawn cup needle roller bearings, full complement (heavy series) M-- Drawn cup needle roller bearings, full complement MH-- Drawn cup full complement needle roller bearings (heavy series) with needle roller thrust bearings or cylindrical by the promoter or ball thrust roller cage assemblies and thrust washers. Needle and cylindrical roller thrust maintained by maintaining and lead frame. When used with a different series of DF thrust needle roller bearings bearing washers 4,074,909, can provide many different combinations of bearing configuration. As the use of high precision cylindrical rollers (needle) increases the contact length of needle roller bearings, so that the bearing can be obtained in a small space under a high load capacity and high rigidity. Another advantage is that if the part is suitable for surface adjacent raceway can be omitted when the washer 4074908 needle roller bearings, can compact design, DF thrust needle roller bearings and thrust needle roller bearings and cylindrical roller used The cylindrical surface for surface modification can reduce the edge stress and improve life. NAV4906 needle roller bearings, needle roller bearings, needle roller provided by LINQing municipal governance and needle roller bearings plant. Linqing municipal and needle roller bearings plant (www.zhgzzc.com) strong, credible, in other industries, Liaocheng accumulated a large number of loyal customers. The company better work attitude and constantly improve governance and innovative ideas will lead you hand needle and into the brilliant, for a better future!