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NEEDLE ROLLER BEARINGS Dw Lw Needle Roller Designation Wt. 1000 pcs Approx. rs min. Dia. Length Chamfer Dimension Limits Rad. Axial mm in mm in kg lbs mm in mm in mm in 1.5 5.8 NRO.B1,5x5,8G2 0.080 0.1 0.6 0.8 0.0591 0.228 0.176 0.004 0.024 0.031 1.5 6.8 NRO.B1.5x6,8G2 0.094 0.1 0.6 0.8 0.0591 0.268 0.207 0.004 0.024 0.031 1.5 7.8 NRO.B1.5x7,8G2 0.108 0.1 0.6 0.8 0.0591 0.307 0.238 0.004 0.024 0.031 1.5 9.8 NRO.B1,5x9,8G2 0.136 0.1 0.6 0.8 0.0591 0.386 0.300 0.004 0.024 0.031 1.5 11.8 NRO.B1,5x11,8G2 0.164 0.1 0.6 0.8 0.0591 0.465 0.362 0.004 0.024 0.031 1.5 13.8 NRO.B1,5x13,8G2 0.191 0.1 0.6 0.8 0.0591 0.543 0.421 0.004 0.024 0.031 2 7.8 NRO.B2x7,8G2 0.190 0.2 0.6 0.8 0.0787 0.307 0.419 0.008 0.024 0.031 2 9.8 NRO.B2x9,8G2 0.240 0.2 0.6 0.8 0.0787 0.386 0.529 0.008 0.024 0.031 2 11.8 NRO.B2x11,8G2 0.290 0.2 0.6 0.8 0.0787 0.465 0.639 0.008 0.024 0.031 2 13.8 NRO.B2x13,8G2 0.340 0.2 0.6 0.8 0.0787 0.543 0.750 0.008 0.024 0.031 2 15.8 NRO.B2x15,8G2 0.390 0.2 0.6 0.8 0.0787 0.622 0.860 0.008 0.024 0.031 2 17.8 NRO.B2x17,8G2 0.440 0.2 0.6 0.8 0.0787 0.701 0.970 0.008 0.024 0.031 2 19.8 NRO.B2x19,8G2 0.490 0.2 0.6 0.8 0.0787 0.780 1.080 0.008 0.024 0.031 2 21.8 NRO.B2x21,8G2 0.540 0.2 0.6 0.8 0.0787 0.858 1.190 0.008 0.024 0.031 2.5 7.8 NRO.B2,5x7,8G2 0.300 0.2 0.6 0.8 0.0984 0.307 0.661 0.008 0.024 0.031 2.5 9.8 NRO.B2,5x9,8G2 0.380 0.2 0.6 0.8 0.0984 0.386 0.838 0.008 0.024 0.031 2.5 11.8 NRO.B2,5x11,8G2 0.450 0.2 0.6 0.8 0.0984 0.465 0.992 0.008 0.024 0.031 2.5 13.8 NRO.B2,5x13,8G2 0.530 0.2 0.6 0.8 0.0984 0.543 1.168 0.008 0.024 0.031 2.5 15.8 NRO.B2,5x15,8G2 0.610 0.2 0.6 0.8 0.0984 0.622 1.345 0.008 0.024 0.031 2.5 17.8 NRO.B2,5x17,8G2 0.690 0.2 0.6 0.8 0.0984 0.701 1.521 0.008 0.024 0.031 2.5 19.8 NRO.B2,5x19,8G2 0.760 0.2 0.6 0.8 0.0984 0.780 1.676 0.008 0.024 0.031 2.5 21.8 NRO.B2,5x21,8G2 0.840 0.2 0.6 0.8 0.0984 0.858 1.852 0.008 0.024 0.031 2.5 23.8 NRO.B2,5x23,8G2 0.920 0.2 0.6 0.8 0.0984 0.937 2.028 0.008 0.024 0.031 3 9.8 NRO.B3x9,8G2 0.540 0.2 0.6 0.8 0.1181 0.386 1.190 0.008 0.024 0.031 3 11.8 NRO.B3x11,8G2 0.650 0.2 0.6 0.8 0.1181 0.465 1.433 0.008 0.024 0.031 3 13.8 NRO.B3x13,8G2 0.760 0.2 0.6 0.8 0.1181 0.543 1.676 0.008 0.024 0.031 3 15.8 NRO.B3x15,8G2 0.870 0.2 0.6 0.8 0.1181 0.622 1.918 0.008 0.024 0.031 3 17.8 NRO.B3x17,8G2 0.990 0.2 0.6 0.8 0.1181 0.701 2.183 0.008 0.024 0.031 3 19.8 NRO.B3x19,8G2 1.100 0.2 0.6 0.8 0.1181 0.780 2.425 0.008 0.024 0.031 3 21.8 NRO.B3x21,8G2 1.210 0.2 0.6 0.8 0.1181 0.858 2.668 0.008 0.024 0.031 3 23.8 NRO.B3x23,8G2 1.320 0.2 0.6 0.8 0.1181 0.937 2.910 0.008 0.024 0.031 3 25.8 NRO.B3x25,8G2 1.430 0.2 0.6 0.8 0.1181 1.016 3.153 0.008 0.024 0.031 3 27.8 NRO.B3x27,8G2 1.540 0.2 0.6 0.8 0.1181 1.094 3.395 0.008 0.024 0.031 Dw Lw Needle Roller Designation Wt. 1000 pcs Approx. rs min. Dia. Length Chamfer Dimension Limits Rad. Axial mm in mm in kg lbs mm in mm in mm in 3.5 11.8 NRO.B3,5x11,8G2 0.910 0.3 0.8 1.0 0.1378 0.465 2.006 0.012 0.031 0.039 3.5 13.8 NRO.B3,5x13,8G2 1.040 0.3 0.8 1.0 0.1378 0.543 2.293 0.012 0.031 0.039 3.5 15.8 NRO.B3,5x15,8G2 1.190 0.3 0.8 1.0 0.1378 0.622 2.624 0.012 0.031 0.039 3.5 17.8 NRO.B3,5x17,8G2 1.340 0.3 0.8 1.0 0.1378 0.701 2.954 0.012 0.031 0.039 3.5 21.8 NRO.B3,5x21,8G2 1.640 0.3 0.8 1.0 0.1378 0.858 3.616 0.012 0.031 0.039 3.5 23.8 NRO.B3,5x23,8G2 1.850 0.3 0.8 1.0 0.1378 0.937 4.079 0.012 0.031 0.039 3.5 25.8 NRO.B3,5x25,8G2 1.950 0.3 0.8 1.0 0.1378 1.016 4.299 0.012 0.031 0.039 3.5 29.8 NRO.B3,5x29,8G2 2.250 0.3 0.8 1.0 0.1378 1.173 4.960 0.012 0.031 0.039 3.5 34.8 NRO.B3,5x34,8G2 2.650 0.3 0.8 1.0 0.1378 1.370 5.842 0.012 0.031 0.039 4 11.8 NRO.B4x11,8G2 1.600 0.3 0.8 1.0 0.1575 0.465 3.527 0.012 0.031 0.039 4 13.8 NRO.B4x13,8G2 1.360 0.3 0.8 1.0 0.1575 0.543 2.998 0.012 0.031 0.039 4 15.8 NRO.B4x15,8G2 1.550 0.3 0.8 1.0 0.1575 0.622 3.417 0.012 0.031 0.039 4 17.8 NRO.B4x17,8G2 1.750 0.3 0.8 1.0 0.1575 0.701 3.858 0.012 0.031 0.039 4 19.8 NRO.B4x19,8G2 1.950 0.3 0.8 1.0 0.1575 0.780 4.299 0.012 0.031 0.039 4 21.8 NRO.B4x21,8G2 2.150 0.3 0.8 1.0 0.1575 0.858 4.740 0.012 0.031 0.039 4 23.8 NRO.B4x23,8G2 2.350 0.3 0.8 1.0 0.1575 0.937 5.181 0.012 0.031 0.039 4 25.8 NRO.B4x25,8G2 2.550 0.3 0.8 1.0 0.1575 1.016 5.622 0.012 0.031 0.039 4 27.8 NRO.B4x27,8G2 2.740 0.3 0.8 1.0 0.1575 1.094 6.041 0.012 0.031 0.039 4 29.8 NRO.B4x29,8G2 2.950 0.3 0.8 1.0 0.1575 1.173 6.504 0.012 0.031 0.039 4 34.8 NRO.B4x34,8G2 3.400 0.3 0.8 1.0 0.1575 1.370 7.496 0.012 0.031 0.039 4 39.8 NRO.B4x39,8G2 3.900 0.3 0.8 1.0 0.1575 1.567 8.598 0.012 0.031 0.039 5 15.8 NRO.B5x15,8G2 2.430 0.3 0.8 1.0 0.1969 0.622 5.357 0.012 0.031 0.039 5 19.8 NRO.B5x19,8G2 3.050 0.3 0.8 1.0 0.1969 0.780 6.724 0.012 0.031 0.039 5 21.8 NRO.B5x21,8G2 3.360 0.3 0.8 1.0 0.1969 0.858 7.408 0.012 0.031 0.039 5 23.8 NRO.B5x23,8G2 3.670 0.3 0.8 1.0 0.1969 0.937 8.091 0.012 0.031 0.039 5 25.8 NRO.B5x25,8G2 3.980 0.3 0.8 1.0 0.1969 1.016 8.774 0.012 0.031 0.039 5 27.8 NRO.B5x27,8G2 4.290 0.3 0.8 1.0 0.1969 1.094 9.458 0.012 0.031 0.039 5 29.8 NRO.B5x29,8G2 4.600 0.3 0.8 1.0 0.1969 1.173 10.141 0.012 0.031 0.039 5 34.8 NRO.B5x34,8G2 5.400 0.3 0.8 1.0 0.1969 1.370 11.905 0.012 0.031 0.039 5 39.8 NRO.B5x39,8G2 6.150 0.3 0.8 1.0 0.1969 1.567 13.558 0.012 0.031 0.039 5 49.8 NRO.B5x49,8G2 7.500 0.3 0.8 1.0 0.1969 1.961 16.535 0.012 0.031 0.039 6 17.8 NRO.B6x17,8G2 3.950 0.3 0.8 1.0 0.2362 0.701 8.708 0.012 0.031 0.039 Table B8-2. Dimensions of metric series needle rollers B-8-6 NEEDLE ROLLER BEARINGS B
JTEKT / Koyo Needle Roller Bearing Catalog
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