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        1.  


          ȦLS

          Needle Roller Bearings without Inner Ring

          NA49...2RSϵ


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          S RNA49..RS RNA49..2RS ߴ ~d OD
          Shaft ܷ̖ pܷ̖ Mass Dimensions Basic Load Ratings Limiting
          Diameter Designation Designation   d F D C B r   Cr o  Cor Speed
          with Sealed with Sealed Dynamic Static
          mm on one side on both sides g min. kN kN rpm
          10 NA 4900.RS NA 4900.2RS 24.5 10 14 22 13 14 0.3 8.0 8.4 13000
          12 NA 4901.RS NA 4901.2RS 27.5 12 16 24 13 14 0.3 8.4 9.2 12000
          15 NA 4902.RS NA 4902.2RS 37.0 15 20 28 13 14 0.3 10.0 12.4 10000
          17 NA 4903.RS NA 4903.2RS 40.0 17 22 30 13 14 0.3 10.8 14.0 9000
          20 NA 4904.RS NA 4904.2RS 80.0 20 25 37 17 18 0.3 15.7 18.7 7500
          25 NA 4905.RS NA 4905.2RS 89.5 25 30 42 17 18 0.3 19.0 23.2 6500
          30 NA 4906.RS NA 4906.2RS 104.0 30 35 47 17 18 0.3 20.3 26.4 5500
          35 NA 4907.RS NA 4907.2RS 175.0 35 42 55 20 21 0.6 26.8 39.8 4800
          40 NA 4908.RS NA 4908.2RS 252.0 40 48 62 22 23 0.6 35.5 54.9 4200
          45 NA 4909.RS NA 4909.2RS 290.0 45 52 68 22 23 0.6 39.9 60.9 3900
          50 NA 4910.RS NA 4910.2RS 295.0 50 58 72 22 23 0.6 40.1 68.4 3500
          60 NA 4912.RS NA 4912.2RS 290.0 60 68 85 25 26 1.0 55.6 95.5 2800
          f
          1.л~dODٺHx񅢿
          2.͝rODٞДֵ30%
          Note:
          1.These load, speed and mass is reference of choice only.  
          2.With an effective oil supply, the limiting speed can be increased by about 30%.

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