该类轴承有圆柱形内孔和圆锥形内孔两种结构。轴承且有结构紧凑，钢性大，承截能力大，受力后变形小等优点，特别适应于机床主轴支承，它分为NN型和NNU型两种结构型。NN型轴承为内圈无挡边。这两种轴承均不限制轴与外壳间的相对轴向位移，用作非空位轴承。
外圈有单档边并带锁圈的双列满装圆柱滚子轴承 | Full complement cylindrical roller bearings double row | d30-260 ㎜ | | NNFL型 | | 轴 承 代 号 | 主 要 尺 寸 （㎜） | 重量
（㎏） | 基本额定负荷 | 极限转速 | XT | INA | d | D | B | rsmin | S | Cr(KN) | Cor(KN) | 转/分(脂) | NNFL5008 | SL185008 | 40 | 68 | 38 | 1 | 1.5 | 0.56 | 101 | 136 | 2500 | NNFL5009 | SL185009 | 45 | 75 | 40 | 1 | 1.5 | 0.71 | 108 | 151 | 2300 | NNFL5010 | SL185010 | 50 | 80 | 40 | 1 | 1.5 | 0.76 | 131 | 184 | 2150 | NNFL5011 | SL185011 | 55 | 90 | 46 | 1.1 | 1.5 | 1.16 | 179 | 270 | 1850 | NNFL4912 | SL184912 | 60 | 85 | 25 | 1 | 0.7 | 0.48 | 67 | 115 | 1850 | NNFL5012 | SL185012 | 60 | 95 | 46 | 1.1 | 1.5 | 1.24 | 184 | 280 | 1750 | NNFL5013 | SL185013 | 65 | 100 | 46 | 1.1 | 1.5 | 1.32 | 194 | 310 | 1600 | NNFL4914 | SL184914 | 70 | 100 | 30 | 1 | 0.7 | 0.78 | 103 | 178 | 1600 | NNFL5014 | SL185014 | 70 | 110 | 54 | 1.1 | 3 | 1.85 | 229 | 340 | 1550 | NNFL5015 | SL185015 | 75 | 115 | 54 | 1.1 | 3 | 1.93 | 242 | 375 | 1400 | NNFL4916 | SL184916 | 80 | 110 | 30 | 1 | 0.7 | 0.88 | 109 | 199 | 1450 | NNFL5016 | SL185016 | 80 | 125 | 60 | 1.1 | 3.5 | 2.59 | 295 | 450 | 1300 | NNFL5017 | SL185017 | 85 | 130 | 60 | 1.1 | 3.5 | 2.72 | 305 | 470 | 1250 | NNFL4918 | SL184918 | 90 | 125 | 35 | 1.1 | 0.7 | 1.35 | 149 | 280 | 1250 | NNFL5018 | SL185018 | 90 | 140 | 67 | 1.5 | 4 | 3.62 | 355 | 560 | 1150 | NNFL4920 | SL184920 | 100 | 140 | 40 | 1.1 | 0.7 | 1.95 | 191 | 370 | 1100 | NNFL5020 | SL185020 | 100 | 150 | 67 | 1.5 | 4 | 3.94 | 375 | 610 | 1100 | NNFL4922 | SL184922 | 110 | 150 | 40 | 1.1 | 0.7 | 2.15 | 198 | 400 | 1050 | NNFL5022 | SL185022 | 110 | 170 | 80 | 2 | 5 | 6.32 | 490 | 790 | 1000 | NNFL4924 | SL184924 | 120 | 165 | 45 | 1.1 | 2 | 2.95 | 222 | 440 | 950 | NNFL5024 | SL185024 | 120 | 180 | 80 | 2 | 5 | 6.77 | 520 | 870 | 900 | NNFL4926 | SL184926 | 130 | 180 | 50 | 1.5 | 2 | 3.95 | 260 | 510 | 850 | NNFL5026 | SL185026 | 130 | 200 | 95 | 2 | 5 | 10.2 | 740 | 1220 | 850 | NNFL4928 | SL184928 | 140 | 190 | 50 | 1.5 | 2 | 4.2 | 270 | 550 | 800 | NNFL5028 | SL185028 | 140 | 210 | 95 | 2 | 5 | 11.1 | 780 | 1340 | 750 | NNFL4930 | SL184930 | 150 | 210 | 60 | 2 | 2 | 6.65 | 410 | 820 | 750 | NNFL5030 | SL185030 | 150 | 225 | 100 | 2.1 | 6 | 13.3 | 810 | 1400 | 750 | NNFL4932 | SL184932 | 160 | 220 | 60 | 2 | 2 | 7 | 425 | 880 | 700 | NNFL4934 | SL184934 | 170 | 230 | 60 | 2 | 2 | 7.35 | 435 | 930 | 650 | NNFL4936 | SL184936 | 180 | 250 | 69 | 2 | 3 | 10.8 | 570 | 1200 | 650 | NNFL4938 | SL184938 | 190 | 260 | 69 | 2 | 3 | 11.2 | 580 | 1270 | 600 | NNFL4940 | SL184940 | 200 | 280 | 80 | 2.1 | 4 | 15.8 | 690 | 1480 | 550 | NNFL4944 | SL184944 | 220 | 300 | 80 | 2.1 | 4 | 17.2 | 720 | 1590 | 550 | NNFL4948 | SL184948 | 240 | 320 | 80 | 2.1 | 4 | 18.5 | 740 | 1710 | 480 | NNFL4952 | SL184952 | 260 | 360 | 100 | 2.1 | 4 | 32 | 1110 | 2490 | 450 |
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