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Aug 8, 2010 TRI、TR. BRI、BR. GTRI、GTR. GBRI、GBR. NAF、RNAF. NAU. NAG. TRU. NAS. NTB. AZK、AZ. NAXI、NAX. NBXI、NBX. NATA. NATB. Bearings can be roughly classified into radial bearings and thrust bearings according to applicable load direction. Radial Bearings are grouped into Shell Type Needle
TR. TAF. BR. NA 49. NA 69. NA 48. TRI. TAFI. BRI. GTR. GBR. GBRI. GTRI. Caged Needle Roller. Bearings. Guide Needle Roller. Bearings. Without inner ring With TR 405520. ─. ─. GTR 405520. 129. 144. GTR. RNA49 TAF TR. RNA69（Fw ≦ 35）. RNA69. Notes(1) Minimum allowable value of chamfer dimension r.
Double lips d1 D b. TA…Z YT. TLA…Z YTL. RNA TR. TAF GTR. RNAF. NAX. NBX. Identification number. Boundary dimensions mm. Combinable bearings. 12. 13.. TAF 405020. TAF 405030. RNA 49/32. RNA 69/32. TR 405520. GTR 405520. RNA. 4907. RNA. 6907. ─. RNAF 405017. RNAFW 405034. ─. RNAF 405520.
TR. TAF. BR. NA 49. NA 69. NA 48. TRI. TAFI. BRI. GTR. GBR. GBRI. GTRI. Caged Needle Roller. Bearings. Guide Needle Roller. Bearings. Without inner ring.. TR 405520. ─. ─. GTR 405520. 129. 144. Notes(1). Minimum allowable value of chamfer dimension r. (2). Allowable rotational speed applies to oil lubrication.
The basic dynamic load rating values are based on the equation in JIS B 1518-1992 which takes into consideration the fact that improvements in the quality of bearing materials and manufacturing technologies have extended bearing lives. In addition, the basic static load rating values have been revised according to ISO