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NINGBO RUNNING BEARINGS CO.,LTD.
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M249748D/M249710/M249710D TIMKEN Four-Row Tapered Roller Bearin
| Payment Terms: | T/T,L/C,WU |
| Place of Origin: | Zhejiang, China (Mainland) |
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Product Detail
TQOW bearings are similar to TQO bearings.When the fillet and/or filler rings do not already have lubrication slots, they are provided in the faces of
Four-Row Tapered Roller Bearings M249748D/M249710/M249710D
Dimension: 254*358.775*269.875 mm, Weight: 85.9kg.
Four-row tapered roller bearings provide maximumcapacity in minimum space, combining the inherenthigh-load,radial/thrust capacity and direct/indirect mounting variablesof tapered roller bearings.
Their main application is on the roll necks of rolling millequipment.Allfour-row bearings are supplied as pre-set matchedassemblies with allcomponents identified to ensure correct installations equence.
TQO (Straight Bore Four-Row Assembly)
TQO bearings are directly mounted and comprised of two double innerraces, two single and one double outer race, with an inner race spacerand two outer race spacers.
Slots in the inner race spacer permit lubricant to flow from the bearingchamber to the roll neck.The inner race spacers are hardened tominimizeface wear.
Size range:
ID 50.800 mm to 1500.000 mm (2.0000 in. to 59.0551 in.)
OD 83.337 mm to 2032.000 mm (3.2810 in. to 80.0000 in.)
Design Attributes
Two double cones, two single cups and a double cup with a cone spacer and two cup spacers.
Spacers have slots or holes for lubrication.
Cone spacers are hardened to reduce face wear.
Numbered serially to assure correct installation sequence.
| Boundary Dimensions | Basicload ratings | Designations | Mass | ||||||||||||
| d | D | T | B | rmin(Axial) | rmin(Radial) | r1min(Axial) | r1min(Radial) | Cr | Cor | kg | |||||
| mm | in | mm | in | mm | in | mm | in | mm | KN | ||||||
| 460* | 625 | 421 | 421 | 3 | 3 | 9 | 9 | 8050 | 18400 | M271149D/M271110-M271110D | 375 | ||||
| 625* | 421 | 421 | 1.5 | 1.5 | 6.4 | 6.4 | 6450 | 16900 | M271149DW/M271110-M271110D-XRS/C9YB2 | 366 | |||||
| 462 | 18.189 | 596.9 | 23.5 | 330.2 | 13 | 330.2 | 13 | 3.3 | 3.3 | 6.4 | 6.4 | 5400 | 14500 | 3806/462 | 276 |
| 479.425 | 18.875 | 679.45 | 26.75 | 495.3 | 19.5 | 495.3 | 19.5 | 3.3 | 3.3 | 6.4 | 6.4 | 9850 | 25000 | M272749D/M272710-M272710D | 586 |
| 482.6 | 19 | 615.95 | 24.25 | 330.2 | 13 | 330.2 | 13 | 6.4 | 6.4 | 6.4 | 6.4 | 4860 | 15200 | LM272249DW/LM272210-LM272210D | 252 |
| 615.95 | 24.25 | 400 | 400 | 5.3 | 5.3 | 6.4 | 6.4 | 4700 | 16000 | 3806/482.6-XRS/HCEC9YAB | 299 | ||||
| 615.95 | 24.25 | 406.4 | 16 | 330.2 | 13 | 1 | 1 | 6.4 | 6.4 | 4860 | 15200 | 3806/482.6-1 | 251 | ||
| 615.95 | 24.25 | 419.1 | 16.5 | 330.2 | 13 | 3.5 | 3.5 | 6.4 | 6.4 | 5000 | 15200 | 3806/482.6-2 | 263 | ||
| 615.95 | 24.25 | 402.05 | 15.8287 | 402.05 | 15.8287 | 1 | 1 | 6.4 | 6.4 | 4800 | 13600 | 3806/482.6-3 | 246 | ||
| 615.95 | 24.25 | 420 | 16.5354 | 420 | 16.5354 | 1 | 1 | 6.4 | 6.4 | 5500 | 17100 | 3806/482.6-4 | 292 | ||
| 630 | 24.8031 | 420 | 16.5354 | 420 | 16.5354 | 3.3 | 3.3 | 6.4 | 6.4 | 6400 | 19000 | 3806/482.6-5 | 343 | ||
| 635 | 25 | 421 | 16.5748 | 421 | 16.5748 | 3 | 3 | 6.4 | 6.4 | 7250 | 20200 | M272449D/M272410-M272410D | 362 | ||
| 647.7 | 25.5 | 417.512 | 16.4375 | 417.512 | 16.4375 | 3.3 | 3.3 | 6.4 | 6.4 | 7200 | 19800 | M272647DW-M272610-M272610D | 401 | ||
| 622.3 | 24.5 | 365.125 | 14.375 | 365.125 | 14.375 | 3 | 3 | 3 | 3 | 5500 | 17000 | 3806/488X4 | 266 | ||
| 489.026 | 19.253 | 634.873 | 24.995 | 320.675 | 12.625 | 320.675 | 12.625 | 3.3 | 3.3 | 3.3 | 3.3 | 4750 | 12000 | LM772749DW/LM772710-LM772710D | 249 |
| 501.65 | 19.75 | 673.1 | 26.5 | 400.05 | 15.75 | 387.35 | 15.25 | 3.3 | 3.3 | 6.4 | 6.4 | 7000 | 19000 | EE641198D/641265-641266D | 687 |
| 711.2 | 28 | 520.7 | 20.5 | 520.7 | 20.5 | 3.3 | 3.3 | 6.4 | 6.4 | 9690 | 26900 | M274149DW/M274110-M274110D | 687 | ||
| 508 | 20 | 695.325 | 27.375 | 415.925 | 16.375 | 415.925 | 16.375 | 3.3 | 3.3 | 6.4 | 6.4 | 5800 | 19600 | LM274049DW/LM274010-LM274010D | 464 |
| 762 | 30 | 463.55 | 18.25 | 463.55 | 18.25 | 6.4 | 6.4 | 6.4 | 6.4 | 9800 | 27000 | EE531201D/531300-531301XD | 750 | ||
| 514.35 | 20.25 | 673.1 | 26.5 | 422.275 | 16.625 | 422.275 | 16.625 | 3.3 | 3.3 | 6.4 | 6.4 | 7000 | 21000 | LM274449DW/LM274410-LM274410D | 408 |
| 519.112 | 20.438 | 736.6 | 29 | 536.575 | 21.125 | 536.575 | 21.125 | 3.3 | 3.3 | 6.4 | 6.4 | 10800 | 30000 | LM275349D/LM275310-LM275310XD | 748 |
| 520.7 | 20.5 | 711.2 | 28 | 400.05 | 15.75 | 400.05 | 15.75 | 3.3 | 3.3 | 6.4 | 6.4 | 7200 | 19500 | LM275349D/LM275310-LM275310XD | 459 |
| 536.575 | 21.125 | 761.873 | 29.995 | 558.8 | 22 | 558.8 | 22 | 3.3 | 3.3 | 6.4 | 6.4 | 10800 | 31500 | M276449DW/M276410-M276410D | 832 |
| 558.8 | 22 | 736.6 | 29 | 322.265 | 12.6876 | 322.268 | 12.6877 | 3.3 | 3.3 | 6.4 | 6.4 | 6200 | 16000 | EE8432DW/843290-843291D | 372 |
| 736.6 | 29 | 409.575 | 16.125 | 409.575 | 16.125 | 3.3 | 3.3 | 6.4 | 6.4 | 6450 | 19800 | LM377449DW/LM377410-LM377410D | 478 | ||
| 736.6 | 29 | 455.612 | 17.9375 | 457.2 | 18 | 3.3 | 3.3 | 6.4 | 6.4 | 8400 | 23000 | LM277149DA/LM277110-LM277110D | 520 | ||
| 571.5 | 22.5 | 812.8 | 32 | 593.725 | 23.375 | 593.725 | 23.375 | 3.3 | 3.3 | 6.4 | 6.4 | 11800 | 31500 | M278749DW/M278710-M278710D | 998 |
| 584.2 | 23 | 730.25 | 28.75 | 342.9 | 13.5 | 349.25 | 13.75 | 1.5 | 1.5 | 3.3 | 3.3 | 6600 | 16500 | 3806/584.2 | 328 |
| 762 | 30 | 396.875 | 15.625 | 401.638 | 15.8125 | 3.3 | 3.3 | 6.4 | 6.4 | 7500 | 22300 | LM778549DW/LM778510-LM778510D | 486 | ||
| 901.7 | 35.5 | 523.08 | 20.5937 | 539.747 | 21.2499 | 3.3 | 3.3 | 9.7 | 9.7 | 12800 | 27500 | EE665231D/665355-665336D | 1250 | ||
| 558.8 | 22 | 736.6 | 29 | 409.575 | 16.125 | 409.575 | 16.125 | 3.3 | 3.3 | 6.4 | 6.4 | 6430 | 20500 | LM377449D/LM377410-LM377410D/HE | 460 |
| 736.6 | 29 | 409.575 | 16.125 | 409.575 | 16.125 | 3.3 | 3.3 | 6.4 | 6.4 | 6430 | 20500 | LM377449D/LM377410-LM377410D/HEC9 | 460 | ||
| 585.788 | 23.063 | 771.525 | 30.375 | 479.425 | 18.875 | 479.425 | 18.875 | 3.3 | 3.3 | 6.4 | 6.4 | 9000 | 24200 | LM278849D/LM278810-LM278810D-XRS | 600 |
| 771.525 | 33.25 | 479.425 | 24.25 | 479.425 | 24.25 | 3.3 | 3.3 | 6.4 | 6.4 | 10000 | 29800 | LM278849D/LM278810-LM278810D | 621 | ||
| 595.312 | 23.438 | 844.55 | 33.25 | 615.95 | 24.25 | 615.95 | 24.25 | 3.3 | 3.3 | 6.4 | 6.4 | 17200 | 38500 | M280049D/M280010-M280010D | 1180 |
| 596.9 | 23.5 | 980 | 38.5827 | 604.838 | 23.8125 | 609.6 | 24 | 6.4 | 6.4 | 12.7 | 12.7 | 16000 | 36000 | 3806/596.9 | 1910 |
| 603.25 | 23.75 | 857.25 | 33.75 | 622.3 | 24.5 | 622.3 | 24.5 | 8.7 | 12.7 | 8.3 | 6.5 | 14000 | 38900 | M280249DWA6/M280210A6-M280210D | 1168 |
| 857.25 | 33.75 | 622.3 | 24.5 | 622.3 | 24.5 | 3.3 | 3.3 | 6.4 | 6.4 | 14000 | 38900 | M280249D/M280210-M280210XD | 1168 | ||
| 609.6 | 24 | 787.4 | 31 | 361.95 | 14.25 | 361.95 | 14.25 | 3.3 | 3.3 | 6.4 | 6.4 | 7100 | 22000 | EE649241D/649310-649311D | 460 |
| 813.562 | 32.03 | 622.3 | 24.5 | 622.3 | 24.5 | 3.3 | 3.3 | 6.4 | 6.4 | 10500 | 30000 | 3806/609.6 | 716 | ||
| 863.6 | 34 | 660.4 | 26 | 660.4 | 26 | 3.3 | 3.3 | 6.4 | 6.4 | 14800 | 41000 | M280349D/M280310-M280310D | 1230 | ||
| 635 | 25 | 901.7 | 35.5 | 654.05 | 25.75 | 654.05 | 25.75 | 3.3 | 3.3 | 6.4 | 6.4 | 15000 | 44500 | M281049D/M281010-M281010D | 1430 |
| 646.112 | 25.438 | 857.25 | 33.75 | 542.925 | 21.375 | 542.925 | 21.375 | 3.3 | 3.3 | 6.4 | 6.4 | 11300 | 33500 | LM281049DW/LM281010-LM281010D | 859 |
| 657.225 | 25.875 | 933.45 | 36.75 | 676.275 | 26.625 | 676.275 | 26.625 | 3.3 | 3.3 | 6.4 | 6.4 | 16500 | 48500 | M281649D/M281610-M281610D | 1580 |
| 660.4 | 26 | 812.8 | 32 | 356.125 | 14.375 | 356.125 | 14.375 | 3.3 | 3.3 | 6.4 | 6.4 | 5300 | 19800 | L281149DW/L281110-L281110D | 403 |
| 679.45 | 26.75 | 901.7 | 35.5 | 552.45 | 21.75 | 552.45 | 21.75 | 3.3 | 3.3 | 6.4 | 6.4 | 12800 | 38500 | LM281849DW/LM281810-LM281810D | 980 |
| 682.625 | 26.875 | 965.2 | 38 | 701.675 | 27.625 | 701.675 | 27.625 | 3.3 | 3.3 | 6.4 | 6.4 | 17400 | 50000 | M282249D/M282210-M282210D | 1714 |
| 685.8 | 27 | 876.3 | 34.5 | 352.425 | 13.875 | 355.6 | 14 | SP | SP | 6.4 | 6.4 | 5800 | 14500 | 3806/685.8-XRS/HCC9 | 490 |
| 876.3 | 34.5 | 352.425 | 13.875 | 355.6 | 14 | 3.3 | 3.3 | 6.4 | 6.4 | 7500 | 19800 | EE655271DW/655345-655346D | 506 | ||
| 708.025 | 27.875 | 930.275 | 36.625 | 565.15 | 22.25 | 565.15 | 22.25 | 3.3 | 3.3 | SP | SP | 12000 | 38500 | LM282549DW/LM282510-LM282510D | 1040 |
| 711.2 | 28 | 914.4 | 36 | 317.5 | 12.5 | 317.5 | 12.5 | 3.3 | 3.3 | 6.4 | 6.4 | 7000 | 19200 | EE755281D/755360-755361D | 524 |
| 914.4 | 36 | 390 | 390 | SP | SP | 7.5 | 7.5 | 7900 | 20100 | 3806/711X4-XRS | 620 | ||||
| 714.375 | 28.125 | 1016 | 40 | 704.85 | 27.75 | 704.85 | 27.75 | 3.3 | 3.3 | 6.4 | 6.4 | 18500 | 52500 | M383240DGW/M383210-M383210D | 1940 |
| 717.55 | 28.25 | 946.15 | 37.25 | 565.15 | 22.25 | 565.15 | 22.25 | 3.3 | 3.3 | 6.4 | 6.4 | 13000 | 40000 | LM282847DW/M282810-M282810D | 1080 |
| 730.25 | 28.75 | 1035.05 | 40.75 | 755.65 | 29.75 | 755.65 | 29.75 | 3.3 | 3.3 | 6.4 | 6.4 | 19800 | 20200 | M283449DW/M283410-M283410D | 2160 |
| 749.3 | 29.5 | 990.6 | 39 | 605 | 23.8189 | 605 | 23.8189 | 3.3 | 3.3 | 6.4 | 6.4 | 14500 | 45000 | LM283649D/LM283610-LM283610D | 1240 |
| 1066.8 | 42 | 723.9 | 28.5 | 736.6 | 29 | SP | SP | 12.7 | 12.7 | 19500 | 58000 | EE325296DGW/325420-325421XD | 2240 | ||
| 762 | 30 | 1066.8 | 42 | 723.9 | 28.5 | 736.6 | 29 | SP | SP | 12.7 | 12.7 | 21000 | 58000 | M284148DW/M284111-M284110D | 2100 |
| 1079.5 | 42.5 | 787.4 | 31 | 787.4 | 31 | 4.8 | 4.8 | 12.7 | 12.7 | 21800 | 65000 | M284249DW/M284210-M284210D | 2490 | ||
| 812.8 | 32 | 1143 | 45 | 768.35 | 30.25 | 768.35 | 30.25 | 6.4 | 6.4 | 12.7 | 12.7 | 21000 | 62500 | 3806/812.8 | 2600 |
| 825.5 | 32.5 | 1168.4 | 46 | 844.55 | 33.25 | 844.55 | 33.25 | 4.8 | 4.8 | 12.7 | 12.7 | 25600 | 76000 | M285848DW/M285810-M285810D | 3040 |
| 863.6 | 34 | 1130.3 | 44.5 | 669.925 | 26.375 | 669.925 | 26.375 | 4.8 | 4.8 | 12.7 | 12.7 | 19500 | 61500 | LM286249DW/LM286210-LM286210D | 2000 |
| 1169.99 | 46.0625 | 844.55 | 33.25 | 844.55 | 33.25 | 4.8 | 4.8 | 12.7 | 12.7 | 23200 | 76000 | 3806/863.6 | 2690 | ||
| 1181.1 | 46.5 | 666.75 | 26.25 | 666.75 | 26.25 | 4.8 | 4.8 | 12.7 | 12.7 | 20000 | 56500 | LM286449D/LM286410-LM286410D | 2140 | ||
| 1219.2 | 48 | 876.3 | 34.5 | 889 | 35 | 4.8 | 4.8 | 12.7 | 12.7 | 27900 | 81000 | EE547341D/547480-547481D | 3480 | ||
| 877.888 | 34.563 | 1220 | 48.0315 | 844.55 | 33.25 | 844.55 | 33.25 | 4.8 | 4.8 | 12.7 | 12.7 | 25000 | 76000 | 3806/877X4 | 3090 |
| 901.7 | 35.5 | 1295.4 | 51 | 901.7 | 35.5 | 914.4 | 36 | 4.8 | 4.8 | 12.7 | 12.7 | 30000 | 86000 | EE634356D/634510-634510D | 4180 |
| 938.213 | 36.938 | 1270 | 50 | 825.5 | 32.5 | 825.5 | 32.5 | 4.8 | 4.8 | 12.7 | 12.7 | 25500 | 81000 | LM287649D/LM287610-LM287610D | 3220 |
| 939.8 | 37 | 1333.5 | 52.5 | 952.5 | 37.5 | 952.5 | 37.5 | 4.8 | 4.8 | 12.7 | 12.7 | 31500 | 94500 | LM287849DW/LM287810-LM287810D | 4500 |
| 1003.3 | 39.5 | 1358.9 | 53.5 | 800.1 | 31.5 | 800.1 | 31.5 | 4.8 | 4.8 | 12.7 | 12.7 | 27200 | 81000 | 3806/1003.3 | 3460 |
| 1139.83 | 44.875 | 1509.71 | 59.4375 | 923.925 | 36.375 | 923.925 | 36.375 | 4.8 | 4.8 | 12.7 | 12.7 | 33000 | 106000 | 3806/1139X4 | 4850 |
| 1200.15 | 47.25 | 1593.85 | 62.75 | 990.6 | 39 | 990.6 | 39 | 4.8 | 4.8 | 12.7 | 12.7 | 37500 | 124000 | LM288949D/LM288910-LM288910D | 5640 |
| 1346.2 | 53 | 1729.74 | 68.1 | 1143 | 45 | 1143 | 45 | 5 | 5 | 12 | 12 | 49000 | 162000 | 3806/1346.2 | 6970 |
Applications
Low- and medium-speed rolling mills
Four-Row Tapered Roller Bearings 
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Company Info
NINGBO RUNNING BEARINGS CO.,LTD. [China (Mainland)]
Business Type:Manufacturer, Trading Company
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)
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