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Cylindrical roller bearings with no ribs on the inner or outer ring, the inner and outer rings can move relative to the axial direction, so they can be used as free end bearings . A cylindrical roller bearing with a single rib on one side of the inner and outer rings and a single rib on the other side can withstand a certain degree of axial load in one direction. Steel stamping cages or copper alloy solid cages are generally used. However, some use polyamide shaped cages .
Bearing No. | Boundary dimensions | Basic load rating(kN) | Limiting speeds | Mass | ||||||
mm | Dynamic | Static | rpm | Kg | ||||||
d | D | B | rs min | rs1 min | Cr | Cor | Grease | Oil | ||
NF303E | 17 | 47 | 14 | 1 | 0.6 | 24.65 | 21.16 | 13000 | 15000 | 0.139 |
NF304E | 20 | 52 | 15 | 1.1 | 0.6 | 23.1 | 19.2 | 14000 | 17000 | 0.149 |
NF305E | 25 | 62 | 17 | 1.1 | 1.1 | 38.5 | 35.8 | 9000 | 12000 | 0.24 |
NF306E | 30 | 72 | 19 | 1.1 | 1.1 | 49.2 | 48.2 | 8000 | 10000 | 0.38 |
NF307E | 35 | 80 | 21 | 1.5 | 1.1 | 62 | 63.2 | 7000 | 9000 | 0.54 |
NF308E | 40 | 90 | 23 | 1.5 | 1.5 | 76.8 | 77.8 | 6300 | 8000 | 0.65 |
NF309E | 45 | 100 | 25 | 1.5 | 1.5 | 93 | 98 | 5600 | 7000 | 0.95 |
NF310E | 50 | 110 | 27 | 2 | 2.0 | 105 | 112 | 5300 | 6700 | 1.2 |
NF311E | 55 | 120 | 29 | 2 | 2.0 | 128 | 138 | 4800 | 6000 | 1.61 |
NF312E | 60 | 130 | 31 | 2.1 | 2.1 | 142 | 155 | 4500 | 5600 | 1.94 |
NF313E | 65 | 140 | 33 | 2.1 | 2.1 | 170 | 188 | 4000 | 5000 | 2.42 |
NF314E | 70 | 150 | 35 | 2.1 | 2.1 | 195 | 220 | 3800 | 4800 | 2.9 |
NF315E | 75 | 160 | 37 | 2.1 | 2.1 | 228 | 260 | 3600 | 4500 | 3.59 |
NF316E | 80 | 170 | 39 | 2.1 | 2.1 | 245 | 270 | 3400 | 4300 | 3.9 |
NF317E | 85 | 180 | 41 | 3 | 3.0 | 265 | 280 | 3200 | 4000 | 5.2 |
NF318E | 90 | 190 | 43 | 3 | 3.0 | 290 | 320 | 3000 | 3800 | 6.17 |
NF319E | 95 | 200 | 45 | 3 | 3.0 | 320 | 350 | 2800 | 3600 | 6.92 |
NF320E | 100 | 215 | 47 | 3 | 3.0 | 355 | 380 | 2600 | 3200 | 8.24 |
NF321E | 105 | 225 | 49 | 3 | 3.0 | 390 | 420 | 2200 | 3000 | 9.9 |
NF322E | 110 | 240 | 50 | 3 | 3.0 | 415 | 470 | 2000 | 2800 | 11.2 |
NF324E | 120 | 260 | 55 | 3 | 3.0 | 440 | 552 | 1900 | 2600 | 14.1 |
