Wholesale Four-row Tapered Roller Bearing Inch Series

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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 Model	Dimensions(mm)						Basic Load Rating(KN)		Installation dimensions				Calculated constant	Axial load factors			Weight(kg)
									Installation dimensions				Calculated constant	Axial load factors
									dbmax	Damin	ramax	rbmax	e	Y2	Y3	Y0
	d	D	T	B	rmin	r1min	Dyn.C	Stat.Co	dbmax	Damin	ramax	rbmax	e	Y2	Y3	Y0
LM247748DW/LM247710/LM247710D	244.475	327.025	193.675	193.675	1.5	3.3	1720	4200	264.3	304.6	3.2	1.6	0.32	2.1	3.13	2.06	44.1
EE220975D/221575/221576D	247.650	400.050	253.995	249.235	1.6	6.4	2600	5140	291.8	359.1	6.4	1.6	0.39	1.71	2.54	1.67	119
HM252340D/HM252315/HM252315D	250.825	431.724	298.453	292.895	3.6	3.6	3470	6720	305.3	384.5	3.6	3.6	0.33	2.03	3.02	1.98	181
M249748DW/M249710/M249710D	254.000	358.775	269.875	269.875	1.5	3.3	2700	6900	276.3	330.1	3.2	3.2	0.33	2.03	3.02	1.98	90
EE134103D/134143/134144D	260.350	365.125	228.600	228.600	3.2	6.4	1940	4300	282.9	346.3	6.4	3.2	0.37	1.8	2.69	1.76	72
LM451349DW/LM451310/LM451310D	266.700	355.600	228.600	230.188	1.5	3.3	1940	5340	283.8	332	3.2	1.6	0.36	1.87	2.79	1.83	65.3
M252349D/M252310/M252310D	269.875	381.000	282.575	282.575	3.3	3.3	2860	7360	290.5	350.8	3.2	3.2	0.33	2.03	3.02	1.98	104
EE275109DW/275155/275156D	276.225	393.700	269.878	269.878	1.5	6.4	2810	6350	308.6	364.4	6.4	1.6	0.4	1.68	2.5	1.64	110
EE135111DW/135155/135156D	279.400	393.700	269.875	269.875	1.5	6.4	2410	5560	303.9	360.9	6.4	1.6	0.38	1.77	2.64	1.73	99
LM654644DW/LM654610/LM654610D	279.578	380.898	244.475	244.475	1.5	3.3	2120	5980	302.4	356.1	3.2	1.6	0.43	1.57	2.34	1.53	86
LM654648DW/LM654610/LM654610D	285.750	380.898	244.475	244.475	1.5	3.3	2120	5980	302.4	356.1	3.2	1.6	0.43	1.57	2.34	1.53	80
M255449DW/M255410/M255410D	288.925	406.400	298.450	298.450	3.3	3.3	3410	8740	315.3	373.9	3.2	3.2	0.34	2	2.97	1.95	127
EE330116D/330166/330167D	292.100	422.275	269.875	269.875	6.4	3.2	3300	7820	320.6	387.9	3.2	6.4	0.32	2.11	3.14	2.06	125
EE291176D/291750/291751D	298.450	444.500	241.300	238.125	7.9	1.6	2470	5520	344	403.5	1.6	7.9	0.38	1.79	2.66	1.75	131
EE129119D/129174/129175XD	299.974	439.949	279.400	280.988	3.2	4.8	2700	6450	338.1	400.5	4.8	3.2	0.4	1.68	2.5	1.64	145
HM256849D/HM256810/HM256810D	300.038	422.275	311.150	311.150	3.3	3.3	3520	9200	323.8	388.3	3.2	3.2	0.34	2	2.98	1.96	141
M757448DW/M757410/M757410D	304.648	438.048	279.400	280.990	3.3	4.8	2920	7820	328.9	403.8	4.8	3.2	0.47	1.44	2.15	1.41	130
M257149DW/M257110/257110D	304.800	419.100	269.875	269.875	1.5	6.4	3140	7910	330.1	387.3	6.4	1.6	0.33	2.03	3.02	1.98	108
L163149D/L163110/L163110CD	355.600	444.500	241.300	241.300	1.5	3.3	2220	6890	370	422	3.2	1.6	0.31	2.2	3.27	2.15	88
EE161403D/161900/161901D	356.387	482.600	222.250	219.075	1.6	6.4	2100	4990	382.7	440.7	6.4	1.6	0.5	1.35	2.01	1.32	116
HM265049DW/HM265010/HM265010D	368.300	523.875	382.588	382.588	3.3	6.4	5460	13600	401.8	483.6	6.4	3.2	0.33	2.03	3.02	1.98	275
LM765149DW/LM765110/LM765110D	374.650	501.650	260.350	250.825	1.5	3.3	2710	6560	402.9	465.8	3.2	1.6	0.44	1.53	2.28	1.5	141
HM266449DW/HM266410/HM266410D	384.175	546.100	400.050	400.050	3.3	6.4	6530	16900	418.7	502	6.4	3.3	0.33	2.03	3.02	1.98	318
LM665949DW/LM665910/LM665910D	385.762	514.350	317.500	317.500	3.3	3.3	4130	10800	406	477.2	3.3	3.3	0.42	1.61	2.4	1.58	187
EE234157D/234215/234216D	393.700	546.100	288.925	268.288	3.2	6.4	2970	7620	436.4	497.6	6.4	3.2	0.48	1.42	2.11	1.39	200
EE234161D/234215/234216D	406.400	546.100	288.925	268.288	1.6	6.4	2970	7620	435.8	497.6	6.4	1.6	0.48	1.42	2.11	1.39	184
M667947D/M667910/M667910D	409.575	546.100	334.962	334.962	1.5	6.4	4570	11500	431.6	510	6.4	1.6	0.42	1.62	2.42	1.59	217
M268749DW/M268710/M268710D	415.925	590.550	434.975	434.975	3.3	6.4	6780	17900	455.2	543	6.4	3.3	0.33	2.03	3.02	1.98	396
LM869449DW/LM869410/LM869410D	431.800	571.500	279.400	279.400	1.5	3.3	3360	8600	469	534	3.2	1.6	0.55	1.24	1.84	1.21	188
EE736173D/736238/736239D	432.003	609.524	317.500	317.500	3.6	6.4	5210	12100	472.7	562	6.4	3.6	0.35	1.94	2.89	1.9	293
M270749DW/M270710/M270710D	447.675	635.000	463.550	463.550	3.3	6.4	7860	21000	490.1	584	6.4	3.3	0.33	2.03	3.02	1.98	485
EE425176D/425299/425299D	456.794	761.873	527.050	527.050	3.2	6.4	11100	22500	520	685	6.4	3.2	0.44	1.52	2.26	1.49	980
L770847DW/L770810/L770810D	457.200	596.900	279.400	276.225	1.5	3.3	3850	10500	488	555	3.3	1.5	0.47	1.4	2.1	1.4	190
EE671802D/672873/672875D	457.403	730.148	419.100	412.750	1.6	6.4	8290	16500	515	660	6.4	1.6	0.39	1.72	2.57	1.69	646
M271149D/M271110/M271110D	460.000	625.000	421.000	421.000	3	9	6550	17600482	482	584	9	3	0.33	2	3	2	378
M272749DW/M272710/M272710D	479.425	679.450	495.300	495.300	3.3	6.4	8480	22200	523	627	6.4	3.3	0.33	2.03	3.02	1.98	604
LM272248DW/LM272210/LM272210D	482.600	615.950	330.200	330.200	6.4	6.4	4850	14200	510	575	6.4	6.4	0.33	2.03	3.02	1.98	235
EE640193D/640260/640261D	488.950	660.400	361.950	365.125	7.9	6.4	6200	15800	527	616	6.4	7.9	0.31	2.2	3.27	2.15	339
EE243193D/243250/243251D	489.026	634.873	320.675	320.675	3.3	3.3	4520	13200	526	595	3.3	3.3	0.34	1.97	2.93	1.93	25
EE641198D/641265/641266D	501.650	673.100	387.350	400.050	3.3	6.4	6670	17300	535	628	6.4	3.3	0.31	2.15	3.2	2.1	395
EE531201D/531300/531301D	508.000	762.000	463.550	463.550	6.4	6.4	9260	19900	564	696	6.4	6.4	0.38	1.78	2.65	1.74	741
LM274449DW/LM274410/LM274410D	514.350	673.100	422.275	422.275	3.3	6.4	7130	20300	546	631	6.4	3.3	0.33	2.03	3.02	1.98	400
M275349D/M275310/M275310D	519.112	736.600	536.575	536.575	3.3	6.4	10600	27200	563	681	6.4	3.3	0.33	2.03	3.02	1.98	791
LM275349D/LM275310/LM275310D	520.700	711.200	400.050	400.050	3.2	6.4	7000	17500	562	663	6.4	3.2	0.33	2.03	3.02	1.98	438
M276449D/M276410/M276410D	536.575	761.873	558.800	558.800	3.3	6.4	11300	28800	578	700	6.4	3.2	0.33	2.03	3.02	1.98	835
EE843221DW/843290/843291D	558.800	736.600	322.268	322.268	3.3	6.4	5920	16100	606	693	6.4	3.3	0.34	1.97	2.93	1.93	378
M278749DW/M278710/M278710D	571.500	812.800	593.725	593.725	3.3	6.4	13000	35000	625	751	6.4	3.3	0.33	2.03	3.02	1.98	1007
LM778549DW/LM778510/LM778510D	584.200	762.000	401.638	396.875	3.3	6.4	7330	20800	618	715	6.4	3.2	0.47	1.43	2.12	1.4	468
LM278849D/LM278810/LM278810D	585.788	771.525	479.425	479.425	3.3	6.4	9140	2560	622	725	6.4	3.3	0.33	2.03	3.02	1.98	606
M280049D/M280010/M280010D	595.312	844.550	615.950	615.950	3.3	6.4	13600	36900	650	780	6.4	3.3	0.33	2.03	3.02	1.98	1155
M280249D/M2820210/M280210XD	603.250	857.250	622.300	622.300	6.4	3.3	14500	38500	652	788	6.4	3.3	0.33	2.03	3.02	1.98	1235
EE649241DW/649310/649311D	609.600	787.400	361.950	361.950	3.3	6.4	6790	19900	648	739	6.4	3.3	0.37	1.82	2.7	1.78	467
M281049DW/M281010/M281010D	635.000	901.700	654.050	654.050	3.3	6.4	15500	43500	671	843	6.4	3.3	0.33	2.03	3.02	1.98	1437
LM281049DW/LM281010/LM281010D	646.112	857.250	542.925	542.925	3.3	6.4	11500	34500	678	810	6.4	3.3	0.33	2.03	3.02	1.98	873
M281349D/M281310/M281310D	649.924	914.390	674.000	672.000	3.6	6	15900	43800	702	844	6	3.6	0.33	2.03	3.02	1.98	1437
M281649D/M281610/M281610D	657.225	933.450	676.275	676.275	3.3	6.4	17300	46000	710	870	6.4	3.3	0.33	2.03	3.02	1.98	1546
EE749259DW/749334/749335D	659.925	854.923	318.480	319.192	4.8	9.7	6240	16000	700	800	9.7	4.8	0.35	1.92	2.86	1.88	457
EE749259D/749334/749335D	660.000	855.000	319.192	318.480	4.8	9.7	6050	17100	713	799	9.7	4.8	0.35	1.9	2.9	1.8	490
L281149D/L281110/L281110D	660.400	812.800	365.125	365.125	3.3	6.4	6860	21100	691	770	6.4	3.3	0.33	2.03	3.02	1.98	415