• NSK 231 Series Spherical Roller Bearings (Cylindrical & K Bore)
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NSK 231 Series Spherical Roller Bearings (Cylindrical & K Bore)

NSK 231 Series Spherical Roller Bearings (Cylindrical & K Bore)

NSK 231 series double-row spherical roller bearings, bore 100-800 mm, with cylindrical bore and tapered bore (K) designations as listed.

Key features

  • Double-row barrel rollers with spherical outer-ring raceway for self-alignment
  • High radial and moderate two-direction axial load capacity
  • K suffix: tapered bore (1:12) for sleeve mounting
  • Cage and design suffixes (EA, CA, CD, C, H, E4) as printed
  • Suitable for heavy-duty, misaligned or shock-loaded applications

Specifications

Bearing type Spherical roller bearing
Series 231
Bore range 100-800 mm
Bore type Cylindrical; K = tapered
Load ratings Basic dynamic Cr / static C0r
Speed basis Grease lubrication limit
Source NSK Rolling Bearings Catalogue (Korean ed.), p. B180-B201
23120C d: 100 mm | D: 165 mm | B: 52 mm | Cr: 345 kN | C0r: 530 kN | Grease speed: 1700 rpm
23120CK d: 100 mm | D: 165 mm | B: 52 mm | Cr: 345 kN | C0r: 530 kN | Grease speed: 1700 rpm
23122C d: 110 mm | D: 180 mm | B: 56 mm | Cr: 385 kN | C0r: 630 kN | Grease speed: 1600 rpm
23122CK d: 110 mm | D: 180 mm | B: 56 mm | Cr: 385 kN | C0r: 630 kN | Grease speed: 1600 rpm
23124C d: 120 mm | D: 200 mm | B: 62 mm | Cr: 465 kN | C0r: 720 kN | Grease speed: 1400 rpm
23124CK d: 120 mm | D: 200 mm | B: 62 mm | Cr: 465 kN | C0r: 720 kN | Grease speed: 1400 rpm
23126C d: 130 mm | D: 210 mm | B: 64 mm | Cr: 505 kN | C0r: 825 kN | Grease speed: 1300 rpm
23126CK d: 130 mm | D: 210 mm | B: 64 mm | Cr: 505 kN | C0r: 825 kN | Grease speed: 1300 rpm
23126H d: 130 mm | D: 210 mm | B: 64 mm | Cr: 585 kN | C0r: 940 kN | Grease speed: 1400 rpm
23126HK d: 130 mm | D: 210 mm | B: 64 mm | Cr: 585 kN | C0r: 940 kN | Grease speed: 1400 rpm
23128C d: 140 mm | D: 225 mm | B: 68 mm | Cr: 580 kN | C0r: 945 kN | Grease speed: 1200 rpm
23128CK d: 140 mm | D: 225 mm | B: 68 mm | Cr: 580 kN | C0r: 945 kN | Grease speed: 1200 rpm
23130C d: 150 mm | D: 250 mm | B: 80 mm | Cr: 725 kN | C0r: 1180 kN | Grease speed: 1100 rpm
23130CK d: 150 mm | D: 250 mm | B: 80 mm | Cr: 725 kN | C0r: 1180 kN | Grease speed: 1100 rpm
23132C d: 160 mm | D: 270 mm | B: 86 mm | Cr: 855 kN | C0r: 1400 kN | Grease speed: 1000 rpm
23132CK d: 160 mm | D: 270 mm | B: 86 mm | Cr: 855 kN | C0r: 1400 kN | Grease speed: 1000 rpm
23134C d: 170 mm | D: 280 mm | B: 8 mm | Cr: 940 kN | C0r: 1570 kN | Grease speed: 1000 rpm
23134CK d: 170 mm | D: 280 mm | B: 8 mm | Cr: 940 kN | C0r: 1570 kN | Grease speed: 1000 rpm
23136C d: 180 mm | D: 300 mm | B: 96 mm | Cr: 1050 kN | C0r: 1760 kN | Grease speed: 900 rpm
23136CK d: 180 mm | D: 300 mm | B: 96 mm | Cr: 1050 kN | C0r: 1760 kN | Grease speed: 900 rpm
23138C d: 190 mm | D: 320 mm | B: 104 mm | Cr: 1190 kN | C0r: 2020 kN | Grease speed: 850 rpm
23138CK d: 190 mm | D: 320 mm | B: 104 mm | Cr: 1190 kN | C0r: 2020 kN | Grease speed: 850 rpm
23140C d: 200 mm | D: 340 mm | B: 112 mm | Cr: 1360 kN | C0r: 2330 kN | Grease speed: 800 rpm
23140CK d: 200 mm | D: 340 mm | B: 112 mm | Cr: 1360 kN | C0r: 2330 kN | Grease speed: 800 rpm
23144C d: 220 mm | D: 370 mm | B: 120 mm | Cr: 1570 kN | C0r: 2710 kN | Grease speed: 710 rpm
23144CK d: 220 mm | D: 370 mm | B: 120 mm | Cr: 1570 kN | C0r: 2710 kN | Grease speed: 710 rpm
23148C d: 240 mm | D: 400 mm | B: 128 mm | Cr: 1790 kN | C0r: 3100 kN | Grease speed: 670 rpm
23148CK d: 240 mm | D: 400 mm | B: 128 mm | Cr: 1790 kN | C0r: 3100 kN | Grease speed: 670 rpm
23152CA d: 260 mm | D: 440 mm | B: 144 mm | Cr: 2160 kN | C0r: 3750 kN | Grease speed: 600 rpm
23152CAK d: 260 mm | D: 440 mm | B: 144 mm | Cr: 2160 kN | C0r: 3750 kN | Grease speed: 600 rpm
23156CA d: 280 mm | D: 460 mm | B: 146 mm | Cr: 2230 kN | C0r: 4000 kN | Grease speed: 560 rpm
23156CAK d: 280 mm | D: 460 mm | B: 146 mm | Cr: 2230 kN | C0r: 4000 kN | Grease speed: 560 rpm
23160CA d: 300 mm | D: 500 mm | B: 160 mm | Cr: 2670 kN | C0r: 4800 kN | Grease speed: 500 rpm
23160CAK d: 300 mm | D: 500 mm | B: 160 mm | Cr: 2670 kN | C0r: 4800 kN | Grease speed: 500 rpm
23164CA d: 320 mm | D: 540 mm | B: 176 mm | Cr: 3050 kN | C0r: 5600 kN | Grease speed: 480 rpm
23164CAK d: 320 mm | D: 540 mm | B: 176 mm | Cr: 3050 kN | C0r: 5600 kN | Grease speed: 480 rpm
23168CA d: 340 mm | D: 580 mm | B: 190 mm | Cr: 3600 kN | C0r: 6600 kN | Grease speed: 430 rpm
23168CAK d: 340 mm | D: 580 mm | B: 190 mm | Cr: 3600 kN | C0r: 6600 kN | Grease speed: 430 rpm
23172CA d: 360 mm | D: 600 mm | B: 192 mm | Cr: 3800 kN | C0r: 7100 kN | Grease speed: 400 rpm
23172CAK d: 360 mm | D: 600 mm | B: 192 mm | Cr: 3800 kN | C0r: 7100 kN | Grease speed: 400 rpm
23176CA d: 380 mm | D: 620 mm | B: 194 mm | Cr: 4000 kN | C0r: 7600 kN | Grease speed: 400 rpm
23176CAK d: 380 mm | D: 620 mm | B: 194 mm | Cr: 4000 kN | C0r: 7600 kN | Grease speed: 400 rpm
23180CA d: 400 mm | D: 650 mm | B: 200 mm | Cr: 4150 kN | C0r: 7900 kN | Grease speed: 380 rpm
23180CAK d: 400 mm | D: 650 mm | B: 200 mm | Cr: 4150 kN | C0r: 7900 kN | Grease speed: 380 rpm
23184CA d: 420 mm | D: 700 mm | B: 224 mm | Cr: 5000 kN | C0r: 9400 kN | Grease speed: 340 rpm
23184CAK d: 420 mm | D: 700 mm | B: 224 mm | Cr: 5000 kN | C0r: 9400 kN | Grease speed: 340 rpm
23188CA d: 440 mm | D: 720 mm | B: 226 mm | Cr: 5300 kN | C0r: 10300 kN | Grease speed: 320 rpm
23188CAK d: 440 mm | D: 720 mm | B: 226 mm | Cr: 5300 kN | C0r: 10300 kN | Grease speed: 320 rpm
23192CA d: 460 mm | D: 760 mm | B: 240 mm | Cr: 5700 kN | C0r: 10900 kN | Grease speed: 300 rpm
23192CAK d: 460 mm | D: 760 mm | B: 240 mm | Cr: 5700 kN | C0r: 10900 kN | Grease speed: 300 rpm
23196CA d: 480 mm | D: 790 mm | B: 248 mm | Cr: 6050 kN | C0r: 11700 kN | Grease speed: 300 rpm
23196CAK d: 480 mm | D: 790 mm | B: 248 mm | Cr: 6050 kN | C0r: 11700 kN | Grease speed: 300 rpm
231/500CAE4 d: 500 mm | D: 830 mm | B: 264 mm | Cr: 6850 kN | C0r: 13400 kN | Grease speed: 280 rpm
231/500CAKE4 d: 500 mm | D: 830 mm | B: 264 mm | Cr: 6850 kN | C0r: 13400 kN | Grease speed: 280 rpm
231/530CAE4 d: 530 mm | D: 870 mm | B: 272 mm | Cr: 7150 kN | C0r: 14160 kN | Grease speed: 260 rpm
231/530CAKE4 d: 530 mm | D: 870 mm | B: 272 mm | Cr: 7150 kN | C0r: 14160 kN | Grease speed: 260 rpm
231/560CAE4 d: 560 mm | D: 920 mm | B: 280 mm | Cr: 7860 kN | C0r: 16600 kN | Grease speed: 240 rpm
231/560CAKE4 d: 560 mm | D: 920 mm | B: 280 mm | Cr: 7860 kN | C0r: 16600 kN | Grease speed: 240 rpm
231/600CAE4 d: 600 mm | D: 980 mm | B: 300 mm | Cr: 8750 kN | C0r: 17500 kN | Grease speed: 220 rpm
231/600CAKE4 d: 600 mm | D: 980 mm | B: 300 mm | Cr: 8750 kN | C0r: 17500 kN | Grease speed: 220 rpm
231/630CAE4 d: 630 mm | D: 1030 mm | B: 315 mm | Cr: 9600 kN | C0r: 19400 kN | Grease speed: 200 rpm
231/630CAKE4 d: 630 mm | D: 1030 mm | B: 315 mm | Cr: 9600 kN | C0r: 19400 kN | Grease speed: 200 rpm
231/670CAE4 d: 670 mm | D: 1090 mm | B: 336 mm | Cr: 10600 kN | C0r: 21600 kN | Grease speed: 190 rpm
231/670CAKE4 d: 670 mm | D: 1090 mm | B: 336 mm | Cr: 10600 kN | C0r: 21600 kN | Grease speed: 190 rpm
231/800CAE4 d: 800 mm | D: 1280 mm | B: 375 mm | Cr: 13800 kN | C0r: 29200 kN | Grease speed: 150 rpm
231/800CAKE4 d: 800 mm | D: 1280 mm | B: 375 mm | Cr: 13800 kN | C0r: 29200 kN | Grease speed: 150 rpm
Spherical Roller BearingsNSK
66 product codes available in this family
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NSK 231 Series Spherical Roller Bearings (Cylindrical & K Bore)

Brand NSK·Spherical Roller Bearings

Available part numbers (66)

23120C, 23120CK, 23122C, 23122CK, 23124C, 23124CK, 23126C, 23126CK, 23126H, 23126HK + 56 more — see full table ↓

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Product codes & specifications
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Product codeSpec
23120Cd: 100 mm | D: 165 mm | B: 52 mm | Cr: 345 kN | C0r: 530 kN | Grease speed: 1700 rpm
23120CKd: 100 mm | D: 165 mm | B: 52 mm | Cr: 345 kN | C0r: 530 kN | Grease speed: 1700 rpm
23122Cd: 110 mm | D: 180 mm | B: 56 mm | Cr: 385 kN | C0r: 630 kN | Grease speed: 1600 rpm
23122CKd: 110 mm | D: 180 mm | B: 56 mm | Cr: 385 kN | C0r: 630 kN | Grease speed: 1600 rpm
23124Cd: 120 mm | D: 200 mm | B: 62 mm | Cr: 465 kN | C0r: 720 kN | Grease speed: 1400 rpm
23124CKd: 120 mm | D: 200 mm | B: 62 mm | Cr: 465 kN | C0r: 720 kN | Grease speed: 1400 rpm
23126Cd: 130 mm | D: 210 mm | B: 64 mm | Cr: 505 kN | C0r: 825 kN | Grease speed: 1300 rpm
23126CKd: 130 mm | D: 210 mm | B: 64 mm | Cr: 505 kN | C0r: 825 kN | Grease speed: 1300 rpm
23126Hd: 130 mm | D: 210 mm | B: 64 mm | Cr: 585 kN | C0r: 940 kN | Grease speed: 1400 rpm
23126HKd: 130 mm | D: 210 mm | B: 64 mm | Cr: 585 kN | C0r: 940 kN | Grease speed: 1400 rpm
23128Cd: 140 mm | D: 225 mm | B: 68 mm | Cr: 580 kN | C0r: 945 kN | Grease speed: 1200 rpm
23128CKd: 140 mm | D: 225 mm | B: 68 mm | Cr: 580 kN | C0r: 945 kN | Grease speed: 1200 rpm
23130Cd: 150 mm | D: 250 mm | B: 80 mm | Cr: 725 kN | C0r: 1180 kN | Grease speed: 1100 rpm
23130CKd: 150 mm | D: 250 mm | B: 80 mm | Cr: 725 kN | C0r: 1180 kN | Grease speed: 1100 rpm
23132Cd: 160 mm | D: 270 mm | B: 86 mm | Cr: 855 kN | C0r: 1400 kN | Grease speed: 1000 rpm
23132CKd: 160 mm | D: 270 mm | B: 86 mm | Cr: 855 kN | C0r: 1400 kN | Grease speed: 1000 rpm
23134Cd: 170 mm | D: 280 mm | B: 8 mm | Cr: 940 kN | C0r: 1570 kN | Grease speed: 1000 rpm
23134CKd: 170 mm | D: 280 mm | B: 8 mm | Cr: 940 kN | C0r: 1570 kN | Grease speed: 1000 rpm
23136Cd: 180 mm | D: 300 mm | B: 96 mm | Cr: 1050 kN | C0r: 1760 kN | Grease speed: 900 rpm
23136CKd: 180 mm | D: 300 mm | B: 96 mm | Cr: 1050 kN | C0r: 1760 kN | Grease speed: 900 rpm
23138Cd: 190 mm | D: 320 mm | B: 104 mm | Cr: 1190 kN | C0r: 2020 kN | Grease speed: 850 rpm
23138CKd: 190 mm | D: 320 mm | B: 104 mm | Cr: 1190 kN | C0r: 2020 kN | Grease speed: 850 rpm
23140Cd: 200 mm | D: 340 mm | B: 112 mm | Cr: 1360 kN | C0r: 2330 kN | Grease speed: 800 rpm
23140CKd: 200 mm | D: 340 mm | B: 112 mm | Cr: 1360 kN | C0r: 2330 kN | Grease speed: 800 rpm
23144Cd: 220 mm | D: 370 mm | B: 120 mm | Cr: 1570 kN | C0r: 2710 kN | Grease speed: 710 rpm
23144CKd: 220 mm | D: 370 mm | B: 120 mm | Cr: 1570 kN | C0r: 2710 kN | Grease speed: 710 rpm
23148Cd: 240 mm | D: 400 mm | B: 128 mm | Cr: 1790 kN | C0r: 3100 kN | Grease speed: 670 rpm
23148CKd: 240 mm | D: 400 mm | B: 128 mm | Cr: 1790 kN | C0r: 3100 kN | Grease speed: 670 rpm
23152CAd: 260 mm | D: 440 mm | B: 144 mm | Cr: 2160 kN | C0r: 3750 kN | Grease speed: 600 rpm
23152CAKd: 260 mm | D: 440 mm | B: 144 mm | Cr: 2160 kN | C0r: 3750 kN | Grease speed: 600 rpm
23156CAd: 280 mm | D: 460 mm | B: 146 mm | Cr: 2230 kN | C0r: 4000 kN | Grease speed: 560 rpm
23156CAKd: 280 mm | D: 460 mm | B: 146 mm | Cr: 2230 kN | C0r: 4000 kN | Grease speed: 560 rpm
23160CAd: 300 mm | D: 500 mm | B: 160 mm | Cr: 2670 kN | C0r: 4800 kN | Grease speed: 500 rpm
23160CAKd: 300 mm | D: 500 mm | B: 160 mm | Cr: 2670 kN | C0r: 4800 kN | Grease speed: 500 rpm
23164CAd: 320 mm | D: 540 mm | B: 176 mm | Cr: 3050 kN | C0r: 5600 kN | Grease speed: 480 rpm
23164CAKd: 320 mm | D: 540 mm | B: 176 mm | Cr: 3050 kN | C0r: 5600 kN | Grease speed: 480 rpm
23168CAd: 340 mm | D: 580 mm | B: 190 mm | Cr: 3600 kN | C0r: 6600 kN | Grease speed: 430 rpm
23168CAKd: 340 mm | D: 580 mm | B: 190 mm | Cr: 3600 kN | C0r: 6600 kN | Grease speed: 430 rpm
23172CAd: 360 mm | D: 600 mm | B: 192 mm | Cr: 3800 kN | C0r: 7100 kN | Grease speed: 400 rpm
23172CAKd: 360 mm | D: 600 mm | B: 192 mm | Cr: 3800 kN | C0r: 7100 kN | Grease speed: 400 rpm
23176CAd: 380 mm | D: 620 mm | B: 194 mm | Cr: 4000 kN | C0r: 7600 kN | Grease speed: 400 rpm
23176CAKd: 380 mm | D: 620 mm | B: 194 mm | Cr: 4000 kN | C0r: 7600 kN | Grease speed: 400 rpm
23180CAd: 400 mm | D: 650 mm | B: 200 mm | Cr: 4150 kN | C0r: 7900 kN | Grease speed: 380 rpm
23180CAKd: 400 mm | D: 650 mm | B: 200 mm | Cr: 4150 kN | C0r: 7900 kN | Grease speed: 380 rpm
23184CAd: 420 mm | D: 700 mm | B: 224 mm | Cr: 5000 kN | C0r: 9400 kN | Grease speed: 340 rpm
23184CAKd: 420 mm | D: 700 mm | B: 224 mm | Cr: 5000 kN | C0r: 9400 kN | Grease speed: 340 rpm
23188CAd: 440 mm | D: 720 mm | B: 226 mm | Cr: 5300 kN | C0r: 10300 kN | Grease speed: 320 rpm
23188CAKd: 440 mm | D: 720 mm | B: 226 mm | Cr: 5300 kN | C0r: 10300 kN | Grease speed: 320 rpm
23192CAd: 460 mm | D: 760 mm | B: 240 mm | Cr: 5700 kN | C0r: 10900 kN | Grease speed: 300 rpm
23192CAKd: 460 mm | D: 760 mm | B: 240 mm | Cr: 5700 kN | C0r: 10900 kN | Grease speed: 300 rpm
23196CAd: 480 mm | D: 790 mm | B: 248 mm | Cr: 6050 kN | C0r: 11700 kN | Grease speed: 300 rpm
23196CAKd: 480 mm | D: 790 mm | B: 248 mm | Cr: 6050 kN | C0r: 11700 kN | Grease speed: 300 rpm
231/500CAE4d: 500 mm | D: 830 mm | B: 264 mm | Cr: 6850 kN | C0r: 13400 kN | Grease speed: 280 rpm
231/500CAKE4d: 500 mm | D: 830 mm | B: 264 mm | Cr: 6850 kN | C0r: 13400 kN | Grease speed: 280 rpm
231/530CAE4d: 530 mm | D: 870 mm | B: 272 mm | Cr: 7150 kN | C0r: 14160 kN | Grease speed: 260 rpm
231/530CAKE4d: 530 mm | D: 870 mm | B: 272 mm | Cr: 7150 kN | C0r: 14160 kN | Grease speed: 260 rpm
231/560CAE4d: 560 mm | D: 920 mm | B: 280 mm | Cr: 7860 kN | C0r: 16600 kN | Grease speed: 240 rpm
231/560CAKE4d: 560 mm | D: 920 mm | B: 280 mm | Cr: 7860 kN | C0r: 16600 kN | Grease speed: 240 rpm
231/600CAE4d: 600 mm | D: 980 mm | B: 300 mm | Cr: 8750 kN | C0r: 17500 kN | Grease speed: 220 rpm
231/600CAKE4d: 600 mm | D: 980 mm | B: 300 mm | Cr: 8750 kN | C0r: 17500 kN | Grease speed: 220 rpm
231/630CAE4d: 630 mm | D: 1030 mm | B: 315 mm | Cr: 9600 kN | C0r: 19400 kN | Grease speed: 200 rpm
231/630CAKE4d: 630 mm | D: 1030 mm | B: 315 mm | Cr: 9600 kN | C0r: 19400 kN | Grease speed: 200 rpm
231/670CAE4d: 670 mm | D: 1090 mm | B: 336 mm | Cr: 10600 kN | C0r: 21600 kN | Grease speed: 190 rpm
231/670CAKE4d: 670 mm | D: 1090 mm | B: 336 mm | Cr: 10600 kN | C0r: 21600 kN | Grease speed: 190 rpm
231/800CAE4d: 800 mm | D: 1280 mm | B: 375 mm | Cr: 13800 kN | C0r: 29200 kN | Grease speed: 150 rpm
231/800CAKE4d: 800 mm | D: 1280 mm | B: 375 mm | Cr: 13800 kN | C0r: 29200 kN | Grease speed: 150 rpm

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