types of ntn bearings and axle boxes 1.1.4 double row cylindrical roller bearings uic standard type railway cars traveling between various countries in europe utilize journal bearings that have been standardized by international union of railways uic iso bearings are sometimes used but specially dimensioned bearings are the most common ntn manufactures specially dimensioned iso bearings and standardized bearings by uic for european use see picture below 1.2.2 rct bearings these are sealed tapered roller bearings used for axles of rolling stock they are available as a unitized type prelubricated with grease they are provided with a hermetic seal which permits a simplified axle box structure they are designed and built to provide ease of use and long life the inch system classes of b c d e f and g approved by the association of american railroads a a r are standard for freight cars locomotives and passenger cars in the metric system standard bearings jt9 jt10 and jt11 are used for fre
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types of ntn railway bearings lrsrlsdwddwdb fig.5 b fig.6 lrse3 e2 e1 fgdwdd4 m d2 d3 bearing center b fig.7 boundary dimensions mm d2 max min max d3 min d4 e1 e2 e3 f g thread m 110.045 120.045 120.045 120.045 120.045 120.045 120.045 120.045 110.023 120.023 120.023 120.023 120.023 120.023 120.023 120.023 155.068 155.068 155.068 155.068 168.068 168.068 168.068 168.068 155.043 155.043 155.043 155.043 168.043 168.043 168.043 168.043 85 85 85 85 70 70 70 70 80 80 87 87 42 42 42 42 40 40 33 43 33 33 33 38 110 117 113 117 113 125 113 125 50 50 42 72 42 72 42 72 42 37 72 45 m100 2 m110 2 m110 2 m110 2 m110 2 m110 2 m110 2 m110 2 11
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types of ntn railway bearings cylindrical roller bearings standardized by uic fig.1 type wu fig.2 type wj bearing number fig no boundary dimensions mm ddbrr1 bt f j basic load ratings dynamic static n cr n cor mass kg wu110 215 wj110 215 wjp110 215 wuj110 215 wj120 220 wjp120 220 wj120 225 wjp120 225 wu120 240 wj120 240 wjp120 240 wuj120 240 wj130 240 wjp130 240 wu130 260 wj130 260 wjp130 260 wuj130 260 wj140 260 wjp140 260 wj140 280 wjp140 280 wj150 280 wjp150 280 wj150 300 wjp150 300 1 2 3 4 2 3 2 3 1 2 3 4 2 3 1 2 3 4 2 3 2 3 2 3 2 3 110 215 73 4 4 13 135.5 147 445 000 600 000 12.1 12.5 12.5 13.1 12.6 12.6 14.7 14.7 17 17.5 17.5 18.6 16.5 16.5 21.4 22 22 23.4 19.5 19.5 27.8 27.8 24.5 24.5 35 35 120 120 220 225 73 80 4 4 10 10 145 150 155 161 470 000 500 000 665 000 730 000 120 240 80 4 10 14 150 161 560 000 750 000 130 240 80 4 10 157 167.5 495 000 695 000 130 260 86 4 10 14 164 178 710 000 965 000 140 140 150 150 260 280 280 300 80 93 86 102 4 5 5 5 10 10 10 10 170 17
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applications for ntn railway bearings jr japan railway central super express train 300 series jr central has developed the 300 series which runs between tokyo and shin-osaka 550 km in 2 and a half hours maximum speed is 270km/h 300 series has been in operation since april 1992 jr-west has introduced series 300n in december 1992 300 series and 300n started operation between tokyo and hakata in march 1993 26
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applications for ntn railway bearings ˇstructure ˇfeatures bearing no jc32 bearing type double row cylindrical roller bearing with seals rcc bearing bearing bore 120mm lubrication grease maximum speed 110km/h 33
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applications for ntn railway bearings jr-west electric train 223 series jr-west has developed 223 series as the most common express train in kansai area which connect three big cities kyoto osaka kobe © jr-west 40
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applications for ntn railway bearings jr kyushu electric train 815 series a new type of suburban electric train introduced on kyushu island in 1999 48
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applications for ntn railway bearings ˇstructure ˇfeatures bearing no 2rnup2459 bearing type double row cylindrical roller bearing with ribs bearing bore 120mm lubrication oil bath maximum speed 120km/h 55
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applications for ntn railway bearings ˇstructure ˇfeatures bearing no jt11 bearing type double row tapered roller bearing with seals rct bearing bearing bore 130 mm lubrication grease maximum speed 110 km/h 63
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applications for ntn railway bearings singapore subway 70
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applications for ntn railway bearings ˇstructure nu330 nh320 bearings for main electric motor ˇfeatures bearing no nu330 nh320 bearing type single row cylindrical roller bearing single row cylindrical roller bearing with ribs bearing bore 150 mm 100 mm lubrication grease 77
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