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NINGBO RUNNING BEARINGS CO.,LTD.
HM256849DW/810/810D Four-Row Tapered Roller Bearings, China HM256849DW/810/810D TIMKEN Four-Row Tapered Roller Bearings Manufacturer
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| Model: | HM256849DW/810/810D |
| Place of Origin: | Zhejiang,China (Mainland) |
| Brand Name: | RNB OR NATURAL |
| Number of Row: | Four row |
| Type: | Roller bearing |
| Material of race: | GCr15SiMn-GB/T18254 |
| Material of roller: | GCr15SiMn-GB/T18254 |
| Precision: | Class 2 |
| Payment & Shipping Terms | Supply Capacity | ||
|---|---|---|---|
| Payment Terms: | L/C, T/T, WU | Production Capacity: | 100000 Piece/Pieces... |
| Min. Order: | 1 Piece/Pieces | Packing: | RNB OR Industrial... |
| Means of Transport: | Ocean, Air | Delivery Date: | 35 days |
Four-Row Tapered Roller Bearings HM256849DW/810/810D
Four-row tapered roller bearings providemaximumcapacity in minimum space, combining the inherenthigh-load,radial/thrust capacity and direct/indirect mounting variablesof taperedroller bearings.
Their main application is on the roll necks of rollingmillequipment.All four-row bearings are supplied as pre-setmatchedassemblies with all components identified to ensure correctinstallationsequence.
TQIT (Tapered Bore Four-Row Assembly)
Type TQIT bearings have a tapered bore that is matched andcontinuous through the inner races.This allows for an interference fiton the backup rolls of high-speed mills, where a loose inner race fit ofa straight bore bearing could cause excessive neck wear.
Size range:
ID 123.022 mm to 1004.633 mm (4.8434 in. to 39.5525 in.)
OD 174.625 mm to 2032.000 mm (6.8750 mm to 80.0000 in.)
Design Attributes
Two tapered-bore single cones, one tapered-bore double cone, four single cups and three cup spacers.
Front faces of single cones and both faces of double cone are extended to contact each other.
Tapered cone bores are matched for continuous taper through the cones.
Lubrication delivered through three cup spacers.
Preset, matched assemblies, serial numbered to assure correct installation.
| 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 | ||
Applications
Roll necks of high-speed rolling mills
Four-Row Tapered Roller Bearings 
Category: Four row tapered roller bearing
Related Category: Single row tapered roller bearing Double row Tapered roller bearing
