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PRODUCT

Four-row tapered roller bearings feature four sets of tapered raceways and tapered rollers, and therefore have very high load carrying capacities and very high stiffness. Furthermore, four-row tapered roller bearings combine the inherent high-load radial/thrust capacity and direct/indirect mounting variables of tapered roller bearings into assemblies offering maximum load rating in minimum space.

 

Because of different direction of the raceway and roller rows, the four row tapered roller bearings are available in the TQI and TQO designs. For the TQI design, the bearings have the two sets of rows of tapered rollers and raceways arranged back-to-back. They have three outer rings or cups and two double row inner rings or cones. Generally, a cup spacer is placed between the outer rings and a cone spacer is place between the inner rings to provide certain axial clearance or preload.

 

While for the TQO design, bearings have the two sets of rows of tapered rollers and raceways arranged face-to-face. They have two double row outer rings or cups and three inner rings or cones. Generally, a cup spacer is placed between the outer rings and a cone spacer is place between the inner rings to provide certain axial clearance or preload.

 

Application

The four-row tapered roller bearings are usually used in roll necks of high-speed rolling mills, agriculture, construction and mining equipment, sports robot combat, axle systems, gear box, engine motors and reducers, propeller shaft, railroad axle-box, differential, wind turbines, etc. 

 


Bearing ModelDimensions(mm)Basic Load Rating(KN) Installation dimensionsCalculated constantAxial load factorsWeight(kg)
dbmaxDaminramaxrbmaxeY2Y3Y0
dDTBrminr1minDyn.CStat.Co
LM247748DW/LM247710/LM247710D244.475 327.025 193.675 193.675 1.53.317204200264.3304.63.21.60.322.13.132.0644.1
EE220975D/221575/221576D247.650 400.050 253.995 249.235 1.66.426005140291.8359.16.41.60.391.712.541.67119
HM252340D/HM252315/HM252315D250.825 431.724 298.453 292.895 3.63.634706720305.3384.53.63.60.332.033.021.98181
M249748DW/M249710/M249710D254.000 358.775 269.875 269.875 1.53.327006900276.3330.13.23.20.332.033.021.9890
EE134103D/134143/134144D260.350 365.125 228.600 228.600 3.26.419404300282.9346.36.43.20.371.82.691.7672
LM451349DW/LM451310/LM451310D266.700 355.600 228.600 230.188 1.53.319405340283.83323.21.60.361.872.791.8365.3
M252349D/M252310/M252310D269.875 381.000 282.575 282.575 3.33.328607360290.5350.83.23.20.332.033.021.98104
EE275109DW/275155/275156D276.225 393.700 269.878 269.878 1.56.428106350308.6364.46.41.60.41.682.51.64110
EE135111DW/135155/135156D279.400 393.700 269.875 269.875 1.56.424105560303.9360.96.41.60.381.772.641.7399
LM654644DW/LM654610/LM654610D279.578 380.898 244.475 244.475 1.53.321205980302.4356.13.21.60.431.572.341.5386
LM654648DW/LM654610/LM654610D285.750 380.898 244.475 244.475 1.53.321205980302.4356.13.21.60.431.572.341.5380
M255449DW/M255410/M255410D288.925 406.400 298.450 298.450 3.33.334108740315.3373.93.23.20.3422.971.95127
EE330116D/330166/330167D292.100 422.275 269.875 269.875 6.43.233007820320.6387.93.26.40.322.113.142.06125
EE291176D/291750/291751D298.450 444.500 241.300 238.125 7.91.624705520344403.51.67.90.381.792.661.75131
EE129119D/129174/129175XD299.974 439.949 279.400 280.988 3.24.827006450338.1400.54.83.20.41.682.51.64145
HM256849D/HM256810/HM256810D300.038 422.275 311.150 311.150 3.33.335209200323.8388.33.23.20.3422.981.96141
M757448DW/M757410/M757410D304.648 438.048 279.400 280.990 3.34.829207820328.9403.84.83.20.471.442.151.41130
M257149DW/M257110/257110D304.800 419.100 269.875 269.875 1.56.431407910330.1387.36.41.60.332.033.021.98108
L163149D/L163110/L163110CD355.600 444.500 241.300 241.300 1.53.3222068903704223.21.60.312.23.272.1588
EE161403D/161900/161901D356.387 482.600 222.250 219.075 1.66.421004990382.7440.76.41.60.51.352.011.32116
HM265049DW/HM265010/HM265010D368.300 523.875 382.588 382.588 3.36.4546013600401.8483.66.43.20.332.033.021.98275
LM765149DW/LM765110/LM765110D374.650 501.650 260.350 250.825 1.53.327106560402.9465.83.21.60.441.532.281.5141
HM266449DW/HM266410/HM266410D384.175 546.100 400.050 400.050 3.36.4653016900418.75026.43.30.332.033.021.98318
LM665949DW/LM665910/LM665910D385.762 514.350 317.500 317.500 3.33.3413010800406477.23.33.30.421.612.41.58187
EE234157D/234215/234216D393.700 546.100 288.925 268.288 3.26.429707620436.4497.66.43.20.481.422.111.39200
EE234161D/234215/234216D406.400 546.100 288.925 268.288 1.66.429707620435.8497.66.41.60.481.422.111.39184
M667947D/M667910/M667910D409.575 546.100 334.962 334.962 1.56.4457011500431.65106.41.60.421.622.421.59217
M268749DW/M268710/M268710D415.925 590.550 434.975 434.975 3.36.4678017900455.25436.43.30.332.033.021.98396
LM869449DW/LM869410/LM869410D431.800 571.500 279.400 279.400 1.53.3336086004695343.21.60.551.241.841.21188
EE736173D/736238/736239D432.003 609.524 317.500 317.500 3.66.4521012100472.75626.43.60.351.942.891.9293
M270749DW/M270710/M270710D447.675 635.000 463.550 463.550 3.36.4786021000490.15846.43.30.332.033.021.98485
EE425176D/425299/425299D456.794 761.873 527.050 527.050 3.26.411100225005206856.43.20.441.522.261.49980
L770847DW/L770810/L770810D457.200 596.900 279.400 276.225 1.53.33850105004885553.31.50.471.42.11.4190
EE671802D/672873/672875D457.403 730.148 419.100 412.750 1.66.48290165005156606.41.60.391.722.571.69646
M271149D/M271110/M271110D460.000 625.000 421.000 421.000 39655017600482482584930.33232378
M272749DW/M272710/M272710D479.425 679.450 495.300 495.300 3.36.48480222005236276.43.30.332.033.021.98604
LM272248DW/LM272210/LM272210D482.600 615.950 330.200 330.200 6.46.44850142005105756.46.40.332.033.021.98235
EE640193D/640260/640261D488.950 660.400 361.950 365.125 7.96.46200158005276166.47.90.312.23.272.15339
EE243193D/243250/243251D489.026 634.873 320.675 320.675 3.33.34520132005265953.33.30.341.972.931.9325
EE641198D/641265/641266D501.650 673.100 387.350 400.050 3.36.46670173005356286.43.30.312.153.22.1395
EE531201D/531300/531301D508.000 762.000 463.550 463.550 6.46.49260199005646966.46.40.381.782.651.74741
LM274449DW/LM274410/LM274410D514.350 673.100 422.275 422.275 3.36.47130203005466316.43.30.332.033.021.98400
M275349D/M275310/M275310D519.112 736.600 536.575 536.575 3.36.410600272005636816.43.30.332.033.021.98791
LM275349D/LM275310/LM275310D520.700 711.200 400.050 400.050 3.26.47000175005626636.43.20.332.033.021.98438
M276449D/M276410/M276410D536.575 761.873 558.800 558.800 3.36.411300288005787006.43.20.332.033.021.98835
EE843221DW/843290/843291D558.800 736.600 322.268 322.268 3.36.45920161006066936.43.30.341.972.931.93378
M278749DW/M278710/M278710D571.500 812.800 593.725 593.725 3.36.413000350006257516.43.30.332.033.021.981007
LM778549DW/LM778510/LM778510D584.200 762.000 401.638 396.875 3.36.47330208006187156.43.20.471.432.121.4468
LM278849D/LM278810/LM278810D585.788 771.525 479.425 479.425 3.36.4914025606227256.43.30.332.033.021.98606
M280049D/M280010/M280010D595.312 844.550 615.950 615.950 3.36.413600369006507806.43.30.332.033.021.981155
M280249D/M2820210/M280210XD603.250 857.250 622.300 622.300 6.43.314500385006527886.43.30.332.033.021.981235
EE649241DW/649310/649311D609.600 787.400 361.950 361.950 3.36.46790199006487396.43.30.371.822.71.78467
M281049DW/M281010/M281010D635.000 901.700 654.050 654.050 3.36.415500435006718436.43.30.332.033.021.981437
LM281049DW/LM281010/LM281010D646.112 857.250 542.925 542.925 3.36.411500345006788106.43.30.332.033.021.98873
M281349D/M281310/M281310D649.924 914.390 674.000 672.000 3.66159004380070284463.60.332.033.021.981437
M281649D/M281610/M281610D657.225 933.450 676.275 676.275 3.36.417300460007108706.43.30.332.033.021.981546
EE749259DW/749334/749335D659.925 854.923 318.480 319.192 4.89.76240160007008009.74.80.351.922.861.88457
EE749259D/749334/749335D660.000 855.000 319.192 318.480 4.89.76050171007137999.74.80.351.92.91.8490
L281149D/L281110/L281110D660.400 812.800 365.125 365.125 3.36.46860211006917706.43.30.332.033.021.98415
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