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2 – 浏览次数：1 –时间：2010-12-13
产品详细介绍：
Since the rolling elements in cylindrical roller bearings make line contact with raceways,these bearings can accommodate heavy radial loads . The rollers are guided by ribs on either the inner or outer ring ,therefore these bearings are also suitable for high speed applications.Furthermore, cylindrical roller bearings are separable ,and relatively easy to install and disassemble even when interference fits are required.
NN type and NNU type.Widely used for applications requiring thin-walled bearings,such the main shafts of machine tools,rolling machine rollers,and in printing equipment.Internal radial clearance is adjusted for the spindle of machine tools by pressing the tapered bore of the inner ring on a tapered shaft.
| Designations | Principal Dimensions (mm) | Basic load rating (kN) | Speed ratings (rpm) | Weight(kg) | ||||
| d | D | B | Dynamic | Staitc | Grease | Oil | ||
| NNU4156 | 280 | 460 | 180 | -- | -- | -- | -- | 120 |
| NN3056 | 280 | 420 | 106 | 1080 | 2060 | 1300 | 1600 | 51.7 |
| NNU4960 | 300 | 420 | 118 | 1020 | 2300 | 1300 | 1500 | 50 |
| NNU4160 | 300 | 500 | 200 | -- | -- | -- | -- | 155 |
| NN3060 | 300 | 460 | 118 | 1250 | 2370 | 1200 | 1500 | 71.5 |
| NNU4964 | 320 | 440 | 118 | 1060 | 2430 | 1200 | 1400 | 52.7 |
| NNU4164 | 320 | 540 | 218 | -- | -- | -- | -- | 200 |
| NNU3064 | 320 | 480 | 121 | 1320 | 2580 | 1100 | 1300 | 77.2 |
| NNU4968 | 340 | 460 | 118 | 1100 | 2580 | 1100 | 1300 | 58.5 |
| NNU3068 | 340 | 520 | 180 | 1650 | 3180 | 1100 | 1300 | 140 |
| NNU4972 | 360 | 480 | 118 | 1650 | 3180 | 1100 | 1300 | 61 |
| NNU4172 | 360 | 600 | 243 | -- | -- | 1000 | 1200 | 275 |
| NNU4876 | 380 | 480 | 100 | 1120 | 2870 | -- | -- | 44 |
| NNU4976 | 380 | 520 | 140 | 1450 | 3500 | 1000 | 1200 | 91.5 |
| NNU4980 | 400 | 540 | 140 | 1470 | 3680 | 940 | 1100 | 92.5 |
| NNU4884 | 420 | 520 | 100 | 1170 | 3180 | -- | -- | 48 |
| NNU4984 | 420 | 560 | 140 | 1510 | 3830 | 900 | 1100 | 99 |
| NNU4184 | 420 | 700 | 280 | -- | -- | -- | -- | -- |
| NNU4988 | 440 | 600 | 160 | 2050 | 4970 | 850 | 1000 | 140 |
| NNU4892 | 460 | 580 | 118 | 1190 | 3050 | -- | -- | 75 |
| NNU4992 | 460 | 620 | 160 | 2220 | 5850 | 800 | 950 | 132 |
| NNU4896 | 480 | 600 | 118 | -- | -- | -- | -- | 78 |
| NNU4996 | 480 | 650 | 170 | 2280 | 5900 | 770 | 910 | 165 |
| NNU4196 | 480 | 790 | `308 | 6810 | 13820 | -- | -- | 603 |
| NNU49/500 | 500 | 670 | 170 | 2330 | 5890 | 730 | 860 | 175 |
| NNU49/530 | 530 | 710 | 180 | 2860 | 7450 | -- | -- | 210 |
| NNU40/530 | 530 | 780 | 250 | -- | -- | -- | -- | 420 |
| NNU49/560 | 560 | 790 | 190 | 3140 | 8370 | -- | -- | 245 |
| NNU40/560 | 560 | 820 | 258 | -- | -- | -- | -- | 420 |
| NNU49/600 | 600 | 800 | 200 | 3580 | 9750 | -- | -- | 290 |
| NNU41/600 | 600 | 980 | 375 | -- | -- | -- | -- | 1100 |
| NNU49/630 | 630 | 850 | 218 | 3835 | 10700 | 550 | 750 | 370 |
| NNU49/670 | 670 | 900 | 230 | 4950 | 13100 | -- | -- | 430 |
| NNU49/710 | 710 | 950 | 243 | 5390 | 14700 | -- | -- | 500 |
| NNU48/750 | 750 | 920 | 170 | -- | -- | -- | -- | 245 |
| NN49/750 | 750 | 1000 | 250 | 5500 | 15300 | -- | -- | 540 |
| NNU48/800 | 800 | 980 | 180 | 2860 | 8560 | -- | -- | 295 |
| NNU49/800 | 800 | 1060 | 258 | 5830 | 16200 | -- | -- | 615 |
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