Advanced Product Solutions
SWR™ Spherical
Roller Bearings
Spherical roller bearings used in guide rolls of continuous casting machines operate under extremely severe conditions and suffer from wear that would not normally occur under most other operating conditions.
Heavy loads at ultra-low speeds. Debris and water contamination. Roll bending stress. All of the ingredients for a short bearing life. In the worst cases, bearing fracture.
With extreme durability and core toughness, NSK SWR Bearings are engineered to deliver superior resistance to wear and the onset of progressive bearing damage – promoting longer operating life and reducing unplanned maintenance downtime.
Proven Advantages
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Superior wear resistance – 3 times that of conventional bearing steel |
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Improved flaking life property – 5 times that of conventional bearing steel |
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Higher toughness of material core (prevention of crack damage) – 5 times that of conventional bearing steel |
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Improved bearing durability extends segment roll operation, reducing maintenance costs and preventing unplanned downtime |
Design Features
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Optimized, high-capacity internal design |
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Outer rings manufactured with proprietary SWR steel composition and heat-treatment process |
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With wear-resistant surface treated pressed steel and heavy-duty machined brass cages |
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Dimensional series 213, 222, 223, 230, 231, 232, 240 and 241 |
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For shaft diameters from 40 to 240 mm; additional series / sizes are available on request |
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Radial internal clearances C-normal, C3 and C4 |
Designation System
Bearing Dimensions and Operating Values
| BASIC BEARING NO. | BEARING DIMENSIONS | BASIC LOAD RATINGS | ||||
| mm | kN | |||||
| d | D | B | r (min) | Dynamic | Static | |
| 22208SWREA | 40 | 80 | 23 | 1.1 | 90.5 | 99.5 |
| 22308SWRCAM | 90 | 33 | 1.5 | 136 | 153 | |
| 22210SWREA | 50 | 90 | 23 | 1.1 | 99 | 119 |
| 22211SWREA | 55 | 100 | 25 | 1.5 | 119 | 144 |
| 21311SWREA | 120 | 29 | 2.0 | 142 | 174 | |
| 23012SWRC | 60 | 95 | 26 | 1.1 | 99 | 141 |
| 22212SWREA | 110 | 28 | 1.5 | 142 | 174 | |
| 21312SWREA | 130 | 31 | 2.1 | 190 | 244 | |
| 22312SWRCAM | 130 | 46 | 2.1 | 246 | 288 | |
| 22213SWRCAM | 65 | 120 | 31 | 1.5 | 152 | 190 |
| 22313SWRCAM | 140 | 48 | 2.1 | 265 | 315 | |
| 22214SWREA | 70 | 125 | 31 | 1.5 | 225 | 232 |
| 22215SWREA | 75 | 130 | 31 | 1.5 | 238 | 244 |
| 22216SWREA | 80 | 140 | 33 | 2.0 | 264 | 275 |
| 21316SWREA | 170 | 39 | 2.1 | 355 | 375 | |
| 22316SWRCAM | 170 | 58 | 2.1 | 390 | 480 | |
| 22217SWREA | 85 | 150 | 36 | 2.0 | 310 | 325 |
| 22218SWREA | 90 | 160 | 40 | 2.0 | 360 | 395 |
| 23218SWRC | 160 | 52.4 | 2.0 | 340 | 490 | |
| 22318SWREA | 190 | 64 | 3.0 | 665 | 705 | |
| 22219SWRCAM | 95 | 170 | 43 | 2.1 | 296 | 395 |
| 23020SWRCD | 100 | 150 | 37 | 1.5 | 212 | 335 |
| 24020SWRC | 150 | 50 | 1.5 | 276 | 470 | |
| 24120SWRCAM | 165 | 65 | 2.0 | 345 | 535 | |
| 22220SWREA | 180 | 46 | 2.1 | 455 | 490 | |
| 23022SWRCAM | 110 | 170 | 45 | 2.0 | 293 | 465 |
| 24022SWRC | 170 | 60 | 2.0 | 380 | 645 | |
| 23122SWRCAM | 180 | 56 | 2.0 | 480 | 630 | |
| 24122SWRC | 180 | 69 | 2.0 | 460 | 750 | |
| 22222SWREA | 200 | 53 | 2.1 | 605 | 645 | |
| 23024SWRCAM | 120 | 180 | 46 | 2.0 | 395 | 525 |
| 24024SWRCAM | 180 | 60 | 2.0 | 480 | 680 | |
| 24124SWRCAM | 200 | 80 | 2.0 | 695 | 905 | |
| 22224SWRCAM | 215 | 58 | 2.1 | 490 | 690 | |
| 23224SWRCAM | 215 | 76 | 2.1 | 790 | 970 | |
| 22324SWRCAM | 260 | 86 | 3.0 | 845 | 1 120 | |
| 23026SWRCD | 130 | 200 | 52 | 2.0 | 400 | 655 |
| 24026SWRCAM | 200 | 69 | 2.0 | 620 | 865 | |
| 24126SWRCAM | 210 | 80 | 2.0 | 590 | 1 010 | |
| 22226SWREA | 230 | 64 | 3.0 | 820 | 940 | |
| 23226SWRCAM | 230 | 80 | 3.0 | 875 | 1 080 | |
| 23028SWRCD | 140 | 210 | 53 | 2.0 | 420 | 715 |
| 24028SWRCAM | 210 | 69 | 2.0 | 635 | 905 | |
| 23128SWRCAM | 225 | 68 | 2.1 | 725 | 945 | |
| 24128SWRCAM | 225 | 85 | 2.1 | 835 | 1 160 | |
| 22228SWRCAM | 250 | 68 | 3.0 | 835 | 945 | |
| 23228SWRCAM | 250 | 88 | 3.0 | 835 | 1 300 | |
| 23030SWRCD | 150 | 225 | 56 | 2.1 | 470 | 815 |
| 24030SWRCAM | 225 | 75 | 2.1 | 740 | 1 090 | |
| 23130SWRC | 250 | 80 | 2.1 | 725 | 1 180 | |
| 24130SWRC | 250 | 100 | 2.1 | 890 | 1 530 | |
| 22230SWRCD | 270 | 73 | 3.0 | 765 | 1 129 | |
| 23230SWRC | 270 | 96 | 3.0 | 975 | 1 560 | |
| 23032SWRCD | 160 | 240 | 60 | 2.1 | 540 | 955 |
| 24032SWRCAM | 240 | 80 | 2.1 | 845 | 1 260 | |
| 24132SWRC | 270 | 109 | 2.1 | 1 040 | 1 760 | |
| 22232SWRCD | 290 | 80 | 3.0 | 910 | 1 320 | |
| 23034SWRCD | 170 | 260 | 67 | 2.1 | 640 | 1 090 |
| 24034SWRC | 260 | 90 | 2.1 | 825 | 1 520 | |
| 23134SWRCAM | 280 | 88 | 2.1 | 940 | 1 570 | |
| 24134SWRC | 280 | 109 | 2.1 | 1 080 | 1 860 | |
| 22234SWRCD | 310 | 86 | 4.0 | 990 | 1 500 | |
| 23234SWRC | 310 | 110 | 4.0 | 1 200 | 1 910 | |
| 23036SWRCD | 180 | 280 | 74 | 2.1 | 750 | 1 270 |
| 24036SWRCAM | 280 | 100 | 2.1 | 1 210 | 1 750 | |
| 23136SWRCAM | 300 | 96 | 3.0 | 1 320 | 1 760 | |
| 24136SWRCAM | 300 | 118 | 3.0 | 1 490 | 2 040 | |
| 22236SWRCD | 320 | 86 | 4.0 | 1 020 | 1 540 | |
| 23038SWRCAM | 190 | 290 | 75 | 2.1 | 970 | 1 350 |
| 24038SWRCAM | 290 | 100 | 2.1 | 1 220 | 1 840 | |
| 24138SWRCAM | 320 | 128 | 3.0 | 1 710 | 2 330 | |
| 22238SWRCAM | 340 | 92 | 4.0 | 1 140 | 1 730 | |
| 23238SWRC | 340 | 120 | 4.0 | 1 440 | 2 350 | |
| 23040SWRCAM | 200 | 310 | 82 | 2.1 | 1 180 | 1 700 |
| 24040SWRCAM | 310 | 109 | 2.1 | 1 420 | 2 120 | |
| 24140SWRCAM | 340 | 140 | 3.0 | 1 960 | 2 660 | |
| 22240SWRCAM | 360 | 98 | 4.0 | 1 300 | 2 010 | |
| 23044SWRCAM | 220 | 340 | 90 | 3.0 | 1 360 | 1 980 |
| 24044SWRCAM | 340 | 118 | 3.0 | 1 310 | 2 490 | |
| 24144SWRCAM | 370 | 150 | 4.0 | 1 800 | 3 200 | |
| 22244SWRCAM | 400 | 108 | 4.0 | 1 570 | 2 430 | |
| 23244SWRC | 400 | 144 | 4.0 | 2 010 | 3 400 | |
| 24048SWRCAM | 240 | 360 | 118 | 3.0 | 1 730 | 2 730 |
| 24148SWRCAM | 400 | 160 | 4.0 | 2 660 | 3 800 |
Additional bearing sizes are available. Please contact NSK for additional information.
