Identification Number The identification number of Machined Type Needle Roller Bearings consists of a model code dimen sions any supplemental codes and a classification symbol Examples are shown below Model code Supplemental code Classification symbol Dimensions NA 49 UU Type of bearing 05 C2 P6
Outline of Bearing Selection A 16 Needle Roller Cages for engine connecting rods KT…EG・KTV…EG C 17 Basic Dynamic Load Rating and Life A 17 Machined Type Needle Roller Bearings NA・TAFI・TRI・BRI D 1 Basic Static Load Rating and Static Safety Factor A 21 Needle Roller Bearings with separable cage
Standard mounting dimensions (mm) Basic dynamic load rating Basic static load rating Limiting speed＊ Mass Usable bearing designation g NA 49 NA 59 21 21 28 28 10 300 19 800 13 100 30 600 8 500 8 500 40 69 RNA4903UU RNA6903UU IRZ172214 IRZ172224 20 NA 4904UU — — NA 6904UU
(Approx) NUMBER Assembled INNER RING Dimensions(mm) Basic dynamic load rating Basic static load rating IKO INA NTN TORRINGTON(KOYO) WITH NA 6903UU 69 RNA 6903UU 40 IRZ172224 17 22 30 23 19 800 30 600 NA6903UU RNA6903UU — — — — — — NA 6904UU 140 RNA 6904UU
Radial runout of assembled bearing outer ring Kea Assembled bearing outer ring face runout with raceway Sea Variation of outside surface generatrix inclination with outer ring reference face SD 33 Model number NA 02 C2P6 49 Example of identification number Bore diameter number Dimension series Model code
9 500 LRTZ 152014 LRTZ 152024 17 NA 4903UU ─ NA 4903U ─ ─ NA 6903UU ─ NA 6903U 395 685 17 17 30 30 13 23 14 24 03 03 22 22 19 19 21 21 28 28 10 300 19 800 13 100 30 600 8 500 8 500 LRTZ 172214 LRTZ 172224 20 NA 4904UU ─ NA 4904U ─ ─ NA 6904UU ─ NA 6904U 785 137
Jan 23 2017 1218 2DUF 053 NA KOY CSAPÁGY 3035300 Ft 1219 2DUF 054 N2 GR KOY CSAPÁGY 10325 MF 128 2Z P0 MC3 AISI 52100 FLGD DEEP GROOVE BALL BEARING 93980 Ft 10326 MF 128 2Z VA EZO 12462 RNA 6904 UU IKO CSAPÁGY 1168400 Ft 12463 RNA 6906 INA CSAPÁGY
GTRI Caged Needle Roller Bearings Guide Needle Roller Bearings Without inner ring With inner ring Without inner ring With inner ring Metric series □Identification Number Model code Supplemental code Classification symbol Dimensions NA 49 UU Type of bearing 05 C2 P6 Examples of identification number
