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NINGBO RUNNING BEARINGS CO.,LTD.
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Four-Row Tapered Roller Bearing tapered roller bearings
| Payment Terms: | T/T,L/C,WU |
| Place of Origin: | Zhejiang, China (Mainland) |
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Product Detail
TQO (Straight Bore Four-Row Assembly)
TQOW (Straight Bore with Cone Face Lubrication Slots)
TQIT (Tapered Bore Four-Row Assembly)
Four-Row Tapered Roller Bearings EE420800D/EE420801/421451CD
Four-row tapered roller bearings provide maximum capacity in minimum space, combining the inherent high-load, radial/thrust capacity and direct/indirect mounting variables of tapered roller bearings.
Their main application is on the roll necks of rolling mill equipment.All four-row bearings are supplied as pre-set matched assemblies with all components identified to ensure correct installation sequence.
Four-Row Tapered Roller Bearings
TQO (Straight Bore Four-Row Assembly)
Applications: Low- and medium-speed rolling mills
TQOW (Straight Bore with Cone Face Lubrication Slots)
Applications: Low- and medium-speed rolling mills
TQIT (Tapered Bore Four-Row Assembly)
Applications:Roll necks of high-speed rolling mills
| 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 | ||||||
| 133.35 | 5.25 | 196.85 | 7.75 | 193.675 | 7.625 | 193.675 | 7.625 | 1.5 | 1.5 | 3.3 | 3.3 | 970 | 2370 | K67390D/K67322-K67322D | 20.2 |
| 177.8 | 7 | 247.65 | 9.75 | 192.088 | 7.562 | 192.088 | 7.5625 | 1.5 | 1.5 | 3.3 | 3.3 | 1070 | 3000 | K67791DGW/K67720-K67721D | 28.6 |
| 187.325 | 7.375 | 269.875 | 10.625 | 211.138 | 8.3125 | 211.138 | 8.3125 | 1.5 | 1.5 | 3.3 | 3.3 | 1570 | 3430 | KM238849D/KM238810-KM238810D | 41.5 |
| 190.5 | 7.5 | 266.7 | 10.5 | 187.325 | 7.375 | 188.912 | 7.4375 | 1.5 | 1.5 | 3.3 | 3.3 | 1280 | 3200 | 67885D/67820-67820D | 32.9 |
| 198.438 | 7.8125 | 284.162 | 11.1875 | 225.425 | 8.875 | 225.425 | 8.875 | 1.5 | 1.5 | 3.3 | 3.3 | 1280 | 3200 | M240648DD/M240611-M240611D | 32.9 |
| 203.2 | 8 | 317.5 | 12.5 | 266.7 | 10.5 | 266.7 | 10.5 | 1.5 | 1.5 | 3.3 | 3.3 | 2400 | 4850 | 93800D/93125-93127D | 76.3 |
| 206.375 | 8.125 | 282.575 | 11.125 | 190.5 | 7.5 | 190.5 | 7.5 | 0.8 | 0.8 | 3.3 | 3.3 | 1030 | 2830 | K67986D/K67920-K67921D | 34.4 |
| 282.575 | 11.125 | 190.5 | 7.5 | 190.5 | 7.5 | 0.8 | 0.8 | 3.3 | 3.3 | 1030 | 2830 | 67986D/67920-67921D | 34.4 | ||
| 282.575 | 11.125 | 226 | 8.8976 | 226 | 8.8976 | 0.6 | 0.6 | 3.3 | 3.3 | 1200 | 3200 | 3806/206X4 | 40.3 | ||
| 220.662 | 8.6875 | 314.325 | 12.375 | 239.712 | 9.4375 | 239.712 | 9.4375 | 1.5 | 1.5 | 3.3 | 3.3 | 2090 | 4900 | KM244249D/KM244210-KM244210D | 60.2 |
| 314.325 | 12.375 | 239.712 | 9.4375 | 239.712 | 9.4375 | 1.5 | 1.5 | 3.3 | 3.3 | 2160 | 4900 | M244249DW/M244210-M244210D/HEC9 | 60.2 | ||
| 314.325 | 12.375 | 239.712 | 9.4375 | 239.712 | 9.4375 | 1.5 | 1.5 | 3.3 | 3.3 | 2000 | 4500 | M244249DGW/M244210-M244210D/HEC9 | 59.8 | ||
| 221.224 | 8.7096 | 355.498 | 13.996 | 228.6 | 9 | 228.6 | 9 | 1.5 | 1.5 | 3.3 | 3.3 | 2100 | 4900 | EE127094D/127138-127139D | 81.8 |
| 228.6 | 9 | 311.15 | 12.25 | 200.025 | 7.875 | 200.025 | 7.875 | 1.5 | 1.5 | 3.3 | 3.3 | 1560 | 3650 | LM245149D/LM245110-LM245110D | 43.9 |
| 311.15 | 12.25 | 200.025 | 7.875 | 200.025 | 7.875 | 1.5 | 1.5 | 3.3 | 3.3 | 1560 | 3650 | LM245149DGW/LM245110-LM245110D | 43.9 | ||
| 400.05 | 15.75 | 296.875 | 11.688 | 296.875 | 11.688 | 3.3 | 3.3 | 3.3 | 3.3 | 3300 | 5650 | EE529091D/529157-529158XD | 148 | ||
| 241.478 | 9.507 | 349.148 | 13.746 | 228.6 | 9 | 228.6 | 9 | 1.5 | 1.5 | 3.3 | 3.3 | 2050 | 4350 | EE127097D/127135-127136D | 71.9 |
| 349.148 | 13.746 | 228.6 | 9 | 228.6 | 9 | 1.5 | 1.5 | 3.3 | 3.3 | 2050 | 4350 | KEE127097D/K127135-K127136D | 71.9 | ||
| 244.475 | 9.625 | 327.025 | 12.875 | 193.675 | 7.625 | 193.675 | 7.625 | 3.3 | 1.5 | 3.3 | 3.3 | 1740 | 3930 | KLM247748DW/KLM247710-KLM247710D | 42.7 |
| 327.025 | 12.875 | 193.675 | 7.625 | 193.675 | 7.625 | 3.3 | 1.5 | 3.3 | 3.3 | 1740 | 4050 | LM247748DW/LM247710-LM247710D | 42.7 | ||
| 254 | 10 | 358.775 | 14.125 | 269.875 | 10.625 | 269.875 | 10.625 | 3.3 | 3.3 | 3.3 | 3.3 | 2720 | 6050 | M249748D/M249710-M249710D | 88.9 |
| 358.775 | 14.125 | 269.875 | 10.625 | 269.875 | 10.625 | 3.3 | 3.3 | 3.3 | 3.3 | 2720 | 6050 | M249748DW/M249710-M249710D | 88.9 | ||
| 358.775 | 14.125 | 269.875 | 10.625 | 269.875 | 10.625 | 3.3 | 3.3 | 3.3 | 3.3 | 2720 | 6050 | K3M249748DW/K3M249710-K3M249710D-3 | 88.9 | ||
| 260.35 | 10.25 | 422.275 | 16.625 | 314.325 | 12.375 | 317.5 | 12.5 | 6.4 | 6.4 | 3.3 | 3.3 | 4100 | 7900 | HM252348D/HM252310-HM252310D | 182 |
| 266.7 | 10.5 | 355.6 | 14 | 230.188 | 9.0625 | 228.6 | 9 | 3.3 | 1.5 | 3.3 | 3.3 | 1950 | 5560 | KLM451349DW/KLM451310-KLM451310D | 65.3 |
| 355.6 | 14 | 230.188 | 9.0625 | 228.6 | 9 | 3.3 | 1.5 | 3.3 | 3.3 | 1950 | 5800 | LM451349DW/LM451310-LM451310D | 63.9 | ||
| 355.6 | 14 | 230.188 | 9.0625 | 228.6 | 9 | 1.6 | 1.6 | 3.3 | 3.2 | 1700 | 4800 | K76589/K76520-K76520D | |||
| 269.875 | 10.625 | 381 | 15 | 282.575 | 11.125 | 282.575 | 11.125 | 3.3 | 3.3 | 3.3 | 3.3 | 2930 | 7550 | M252349DW/M252310-M252310D | 105 |
| 276.225 | 10.875 | 393.7 | 15.5 | 269.875 | 10.625 | 269.875 | 10.625 | 1 | 1 | 6.4 | 6.4 | 2880 | 6200 | 3806/276X4 | 105 |
| 279.4 | 11 | 393.7 | 15.5 | 269.875 | 10.625 | 269.875 | 10.625 | 1.5 | 1.5 | 6.4 | 6.4 | 2880 | 6200 | KEE135111DW/K135155-K135156D | 103 |
| 393.7 | 15.5 | 269.875 | 10.625 | 269.875 | 10.625 | 1.5 | 1.5 | 6.4 | 6.4 | 2880 | 6200 | EE135111D/135155-135156D | 103 | ||
| 393.7 | 15.5 | 269.875 | 10.625 | 269.875 | 10.625 | 1.5 | 1.5 | 6.4 | 6.4 | 2880 | 6200 | EE135111DW/135155-135156DW/HEC9 | 103 | ||
| 393.7 | 15.5 | 269.875 | 10.625 | 269.875 | 10.625 | 1.5 | 1.5 | 6.4 | 6.4 | 2880 | 6200 | EE135111DW/135155-135156DW | 103 | ||
| 288.925 | 11.375 | 406.4 | 16 | 298.45 | 11.75 | 298.45 | 11.75 | 3.3 | 3.3 | 3.3 | 3.3 | 3400 | 8150 | M255449DW/M255410-M255410D | 125 |
| 406.4 | 16 | 298.45 | 11.75 | 298.45 | 11.75 | 3.3 | 3.3 | 3.3 | 3.3 | 3400 | 8150 | M255449D/M255410-M255410D | 125 | ||
| 292.1 | 11.5 | 422.275 | 16.625 | 269.875 | 10.625 | 269.875 | 10.625 | SP | SP | 3.3 | 3.3 | 3450 | 7950 | EE330116D/330166-330167D | 126 |
| 300.038 | 11.813 | 422.275 | 16.625 | 311.15 | 12.25 | 311.15 | 12.25 | 3.3 | 3.3 | 3.3 | 3.3 | 3700 | 9400 | HM256849D/HM256810-HM256810D | 142 |
| 304.648 | 11.994 | 438.048 | 17.246 | 280.99 | 11.0626 | 279.4 | 11 | 3.3 | 3.3 | 4.8 | 4.8 | 3000 | 6650 | M757448D/M757410-M757410D | 130 |
| 438.048 | 17.246 | 280.99 | 11.0626 | 279.4 | 11 | 3.3 | 3.3 | 4.8 | 4.8 | 3000 | 6650 | M757448DW/M757410-M757410D | 130 | ||
| 304.8 | 12 | 419.1 | 16.5 | 269.875 | 10.625 | 269.875 | 10.625 | 1.5 | 1.5 | 6.4 | 6.4 | 2850 | 6800 | M257149D/M257110-M257110D | 112 |
| 482.6 | 19 | 365.125 | 14.375 | 377.825 | 14.875 | 3.3 | 3.3 | 3.3 | 3.3 | 4950 | 10300 | 3806/304.8 | 266 | ||
| 495.3 | 19.5 | 342.9 | 13.5 | 342.9 | 13.5 | 2 | 2 | 6.4 | 6.4 | 5000 | 9200 | 3806/304.8-1 | 243 | ||
| 501.65 | 19.75 | 336.55 | 13.25 | 336.55 | 13.25 | 2 | 2 | 6.4 | 6.4 | 4650 | 9200 | 3806/304.8-2 | 255 | ||
| 304.902 | 12.004 | 412.648 | 16.246 | 266.7 | 10.5 | 266.7 | 10.5 | 3.3 | 3.3 | 3.3 | 3.3 | 2930 | 7000 | M257248DW/M257210-M257210D | 102 |
| 305 | 12.008 | 438.048 | 17.246 | 280.99 | 11.0626 | 279.4 | 11 | 3.3 | 3.3 | 4.8 | 4.8 | 2980 | 6600 | M757449DW/M757410-M757410D | 129 |
| 317.5 | 12.5 | 422.275 | 16.625 | 269.875 | 10.625 | 269.875 | 10.625 | 1.5 | 1.5 | 3.3 | 3.3 | 2980 | 8100 | LM258648DW/LM259610-LM258610D | 104 |
| 438.15 | 17.25 | 276.225 | 10.875 | 276.225 | 10.875 | 1.5 | 1.5 | 3.3 | 3.3 | 3450 | 8200 | 3806/317.5 | 132 | ||
| 447.675 | 17.625 | 327.025 | 12.875 | 327.025 | 12.875 | 3.3 | 3.3 | 3.3 | 3.3 | 4650 | 10700 | HM259049D/HM259010-HM259010D | 163 | ||
| 330.2 | 13 | 444.5 | 17.5 | 301.625 | 11.875 | 301.625 | 11.875 | 3.3 | 3.3 | 3.3 | 3.3 | 3550 | 9600 | M260149DW/M260110-M260110D | 134 |
| 330.302 | 13.004 | 438.023 | 17.245 | 247.65 | 9.75 | 254 | 10 | 1.5 | 1.5 | 3.3 | 3.3 | 2500 | 7300 | EE138131D/138172-138173XD | 109 |
| 333.375 | 13.125 | 469.9 | 18.5 | 342.9 | 13.5 | 342.9 | 13.5 | 3.3 | 3.3 | 3.3 | 3.3 | 4100 | 10100 | HM261049DW/HM261010-HM261010D | 186 |
| 341.312 | 13.438 | 457.098 | 17.996 | 254 | 10 | 254 | 10 | 2 | 1.5 | 3.3 | 3.3 | 2350 | 7400 | LM761648DW/LM761610-LM761610D | 112 |
| 457.098 | 17.996 | 254 | 10 | 254 | 10 | 2 | 1.5 | 3.3 | 3.3 | 2740 | 7050 | LM761648D/LM761610-LM761610D-3 | 112 | ||
| 342.9 | 13.5 | 533.4 | 21 | 307.985 | 12.1254 | 301.625 | 11.875 | 3.3 | 3.3 | 3.3 | 3.3 | 4650 | 8750 | EE971355D/972100-972103D | 239 |
| 571.5 | 22.5 | 342.9 | 13.5 | 342.9 | 13.5 | 3.3 | 3.3 | 6.4 | 6.4 | 6200 | 11500 | EE536136D/536225-536226D | 366 | ||
| 343.052 | 13.506 | 457.098 | 17.996 | 254 | 10 | 254 | 10 | 2 | 1.5 | 3.3 | 3.3 | 2670 | 7400 | K1-LM761649DW/LM761610-LM761610D | 110 |
| 457.098 | 17.996 | 254 | 10 | 254 | 10 | 2 | 1.5 | 3.3 | 3.3 | 2670 | 7350 | LM761649DW/LM761610-LM761610D | 110 | ||
| 457.098 | 17.996 | 254 | 10 | 254 | 10 | 1.5 | 1.5 | 3.3 | 3.3 | 2800 | 6900 | LM761649DWSH/LM761610SH-LM761610DSH-3 | 111 | ||
| 345.281 | 13.594 | 488.95 | 19.25 | 358.775 | 14.125 | 358.775 | 14.125 | 3.3 | 3.3 | 3.3 | 3.3 | 4800 | 12400 | 3806/345X4 | 239 |
| 346.075 | 13.625 | 488.95 | 19.25 | 358.775 | 14.125 | 358.775 | 14.125 | 3.3 | 3.3 | 3.3 | 3.3 | 4800 | 12400 | HM262749D/HM262710-HM262710D | 221 |
| 347.662 | 13.688 | 469.9 | 18.5 | 292.1 | 11.5 | 292.1 | 11.5 | 3.3 | 3.3 | 3.3 | 3.3 | 2600 | 7950 | M262449D/M262410-M262410D | 142 |
| 469.9 | 18.5 | 260.35 | 10.25 | 260.35 | 10.25 | 1.5 | 1.5 | 3.3 | 3.3 | 3750 | 10100 | LM262449DW/LM262410-LM262410D | 129 | ||
| 355.6 | 14 | 482.6 | 19 | 269.875 | 10.625 | 265.114 | 10.4376 | 1.5 | 1.5 | 3.3 | 3.3 | 2570 | 7440 | 3806/355.6/HCC9 | 139 |
| 488.95 | 19.25 | 317.5 | 12.5 | 317.5 | 12.5 | 1.5 | 1.5 | 3.3 | 3.3 | 3150 | 10000 | M263349D/M263310-M263310D | 177 | ||
| 488.95 | 19.25 | 317.5 | 12.5 | 317.5 | 12.5 | 1.5 | 1.5 | 3.3 | 3.3 | 4750 | 11000 | M263349D/M263310-M263310D-XRS | 165 | ||
| 368.3 | 14.5 | 523.875 | 20.625 | 382.588 | 15.0625 | 382.588 | 15.0625 | 3.3 | 3.3 | 6.4 | 6.4 | 6200 | 14800 | HM265049DW/HM265010-HM265010D | 274 |
| 374.65 | 14.75 | 501.65 | 17.948 | 250.825 | 9.875 | 260.35 | 10.25 | 1.5 | 1.5 | 3.3 | 3.3 | 3120 | 7550 | EE231475D/231975-231976D | 141 |
| 384.175 | 15.125 | 546.1 | 21.5 | 400.05 | 15.75 | 400.05 | 15.75 | 3.3 | 3.3 | 6.4 | 6.4 | 6120 | 16400 | HM266449DW/HM266410-HM266410CD | 310 |
| 546.1 | 21.5 | 400.05 | 15.75 | 400.05 | 15.75 | 1.5 | 1.5 | 6.4 | 6.4 | 5200 | 12000 | HM266449DW/HM266410-HM266410D-XRS/C9YB2 | 293 | ||
| 385.762 | 15.188 | 514.35 | 20.25 | 317.5 | 12.5 | 317.5 | 12.5 | 3.3 | 3.3 | 3.3 | 3.3 | 4150 | 11000 | LM665949DW/LM665910-LM665910D | 189 |
| 406.4 | 16 | 546.1 | 21.5 | 268.288 | 10.5625 | 288.925 | 11.375 | 1.5 | 1.5 | 6.4 | 6.4 | 4150 | 9450 | EE234161D/234215-234216D | 182 |
| 546.1 | 21.5 | 288.925 | 11.375 | 288.925 | 11.375 | 1.5 | 1.5 | 6.4 | 6.4 | 4200 | 10000 | LM767749DW/LM767710-LM767710D | 186 | ||
| 546.1 | 21.5 | 330 | 12.9921 | 330 | 12.9921 | 1.5 | 1.5 | 6.4 | 6.4 | 4900 | 12500 | 3806/406.4 | 223 | ||
| 565.15 | 22.25 | 381 | 15 | 381 | 15 | 3.3 | 3.3 | 6.4 | 6.4 | 5900 | 15200 | M267949D/M267910-M267910XD | 298 | ||
| 590.55 | 23.25 | 400.05 | 15.75 | 400.05 | 15.75 | 3.3 | 3.3 | 6.4 | 6.4 | 6850 | 16300 | EE833161D/833232-833233D | 371 | ||
| 409.575 | 16.125 | 546.1 | 21.5 | 334.962 | 13.1875 | 334.962 | 13.1875 | 1.5 | 1.5 | 6.4 | 6.4 | 4700 | 11600 | M667947DW/M667910-M667910D | 206 |
| 546.1 | 21.5 | 334.962 | 13.1875 | 334.962 | 13.1875 | 1.5 | 1.5 | 6.4 | 6.4 | 3470 | 11500 | M667947D/M667910-M667910D | 213 | ||
| 546.1 | 21.5 | 334.962 | 13.1875 | 334.962 | 13.1875 | 1.5 | 1.5 | 6.4 | 6.4 | 4150 | 10400 | M667947DW/M667910-M667910D-XRS/HEC9YB2 | 205 | ||
| 415.925 | 16.375 | 590.55 | 23.25 | 434.975 | 17.125 | 434.975 | 17.125 | 3.3 | 3.3 | 6.4 | 6.4 | 5400 | 16500 | M268749D/M268710-M268710D | 369 |
| 431.8 | 17 | 571.5 | 22.5 | 279.4 | 11 | 279.4 | 11 | 1.5 | 1.5 | 3.3 | 3.3 | 3550 | 9500 | LM869449DW/LM869410-LM869410D | 199 |
| 571.5 | 22.5 | 336.55 | 13.25 | 336.55 | 13.25 | 1.5 | 1.5 | 6.4 | 6.4 | 4700 | 11500 | LM769349D/LM769310-LM769310D | 233 | ||
| 635 | 25 | 355.6 | 14 | 355.6 | 14 | 6.4 | 6.4 | 6.4 | 6.4 | 6500 | 14500 | EE931070D/931250-931251XD | 386 | ||
| 444.5 | 17.5 | 571.5 | 22.5 | 336.55 | 13.25 | 336.55 | 13.25 | 1.5 | 1.5 | 3.3 | 3.3 | 4800 | 14200 | 3806/444.5 | 216 |
| 447.6 | 17.622 | 635 | 25 | 463.5 | 18.248 | 463.5 | 18.248 | 3.3 | 3.3 | 6.4 | 6.4 | 7500 | 19800 | 3806/447.6 | 472 |
| 447.675 | 17.625 | 636 | 25.0394 | 463.55 | 18.25 | 463.55 | 18.25 | 3.3 | 3.3 | 6.4 | 6.4 | 8100 | 21800 | M270749DW/M270710-M270710D | 486 |
| 449.949 | 17.715 | 594.949 | 23.4232 | 368 | 14.4882 | 368 | 14.4882 | 4 | 4 | 8 | 8 | 4900 | 15700 | M270448DGW/M270410/DB-3 | 300 |
| 457.073 | 17.995 | 730.148 | 28.746 | 412.75 | 16.25 | 419.1 | 16.5 | 1.5 | 1.5 | 6.4 | 6.4 | 8800 | 19000 | 3806/457X4 | 628 |
| 457.2 | 18 | 596.9 | 23.5 | 276.225 | 10.875 | 279.4 | 11 | 1.5 | 1.5 | 3.3 | 3.3 | 4400 | 10500 | L770847DW/L770810-L770810D | 202 |
| 596.9 | 23.5 | 320 | 12.5984 | 320 | 12.5984 | 3.3 | 3.3 | 3.3 | 3.3 | 4700 | 13500 | 3806/457.2 | 234 | ||
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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