Tapered Roller Bearings

Metric and inch tapered roller bearings — GCr15 steel, P0/P6/P5, cross-referenced to Timken/SKF/FAG.

Business Terms

MOQ: 1000 pcs

Sample: Sample available upon request

Lead Time: 15-30 days for standard orders

Payment & Shipping

Payment: T/T 30% deposit, 70% before shipment; L/C at sight

Port: FOB Ningbo / Shanghai

OEM: OEM branding, custom specs, packaging customizable

Certifications

IATF 16949:2016

ISO 14001:2015

RoHS

REACH

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OTT Tapered Roller Bearings — LM11949/10 Metric & Inch Series

Tapered Roller Bearing Cross-Section Structure Diagram

About Tapered Roller Bearings

OTT tapered roller bearings are manufactured from GCr15 bearing steel with precision-ground raceways, available in both metric (ISO 355 / DIN 720) and inch (ABMA) series. The metric series covers 30000, 32000, 33000, and 31000 families (d = 20–150 mm), while the inch series covers LM, HM, and standard AFBMA cone/cup pairs (d from 0.5″ to 2.5″). All bearings feature optimized roller-raceway contact geometry for high radial and axial load capacity, with cage options in steel, brass, or polyamide. Dynamic load ratings up to 300 kN. Precision grades P0 standard, P6/P5 available on request. Cross-referenced to Timken, SKF, FAG, NTN, KOYO, and NSK catalogues.

Series Coverage at a Glance

Metric Series (ISO 355 / DIN 720)

• 302xx — Standard light (d 15–150 mm)
• 303xx — Medium (d 17–150 mm)
• 322xx — Heavy medium (d 15–150 mm)
• 323xx — Heavy (d 17–150 mm)
• 313xx — Wide inner ring (d 65–160 mm)
• 320xx — Extra-light (d 20–120 mm)
• 330xx — Extra-heavy (d 50–130 mm)

Inch Series (ABMA Std. 19)

• LM / HM / M / L families
• Cone + cup matched pairs
• d range: 0.5″ – 2.5″ (12.7–63.5 mm)
• Interchangeable with Timken / SKF
• ABMA Class 4 tolerances

Key Features

GCr15 bearing steel (AISI 52100 equivalent)
Metric series: 30000 / 32000 / 33000 / 31000 families (d 20–150 mm)
Inch series: ABMA cone/cup pairs (d 0.5″ – 2.5″)
Dynamic load rating Cr up to 300 kN
Precision grades P0 standard, P6 / P5 on request
Steel, brass, or polyamide cage options
Cross-referenced to Timken, SKF, FAG, NTN, KOYO, NSK
IATF 16949 certified manufacturing
Interchangeable with JIS B 1512 and ANSI/ABMA standards

Applications

Automotive wheel hubs (rear drive axles)Truck axles and differentialsAgricultural equipment gearboxesConstruction machineryIndustrial gearboxesMining equipmentRailway axle boxesWind turbine gearboxes

Metric Series

119 models

Showing 1–15 of 119 models · Dimensions in mm · Load ratings Cr/Cor in kN · a in mm · Weight in kg

型号 (ISO)	旧型号 (GB)	d	D	T	B	C	Cr (kN)	Cor (kN)	a (mm)	kg
30204	7204E	20	47	15.25	14	12	28.2	30.6	11.2	0.126
30205	7205E	25	52	16.25	15	13	32.2	37	12.5	0.154
30206	7206E	30	62	17.25	16	14	43.3	50.5	13.8	0.231
30207	7207E	35	72	18.25	17	15	54.2	63.5	15.3	0.331
30208	7208E	40	80	19.75	18	16	63	74	16.9	0.442
30209	7209E	45	85	20.75	19	16	67.9	83.6	18.6	0.474
30210	7210E	50	90	21.75	20	17	73.3	92.1	20	0.529
30211	7211E	55	100	22.75	21	18	90.8	113.7	21	0.713
30212	7212E	60	110	23.75	22	19	103.3	130	22.3	0.904
30213	7213E	65	120	24.75	23	20	120.6	153.6	23.8	1.13
30214	7214E	70	125	26.25	24	21	132.3	173.6	25.8	1.26
30215	7215E	75	130	27.25	25	22	138.4	185.4	27.4	1.36
30216	7216E	80	140	28.25	26	22	160.4	212.8	28.1	1.67
30217	7217E	85	150	30.5	28	24	177.6	236.8	30.3	2.06
30218	7218E	90	160	32.5	30	26	200.1	269.6	32.3	2.54
30219	7219E	95	170	34.5	32	27	226.6	309	34.2	3.04
30220	7220E	100	180	37	34	29	253.9	350.3	36.4	3.72
30304	7304E	20	52	16.25	15	13	33.1	33.2	11.1	0.165
30305	7305E	25	62	18.25	17	15	46.9	48.1	13	0.263
30306	7306E	30	72	20.75	19	16	59	63.1	15.3	0.387
30307	7307E	35	80	22.75	21	18	75.3	82.6	16.8	0.515
30308	7308E	40	90	25.25	23	20	90.9	107.6	19.5	0.747
30309	7309E	45	100	27.25	25	22	108.9	129.8	21.3	0.984
30310	7310E	50	110	29.25	27	23	130.1	157.1	23	1.28
30311	7311E	55	120	31.5	29	25	153.3	187.6	24.9	1.63
30312	7312E	60	130	33.5	31	26	171.4	210	26.6	1.99
30313	7313E	65	140	36	33	28	195.9	241.7	28.7	2.44
30314	7314E	70	150	38	35	30	219	271.7	30.7	2.98
30315	7315E	75	160	40	37	31	252.8	318.8	32	3.57
30316	7316E	80	170	42.5	39	33	278.8	352.5	34.4	4.27
30317	7317E	85	180	44.5	41	34	304.9	388.2	35.9	4.95
30318	7318E	90	190	46.5	43	36	342.1	440.9	37.5	5.8
32205	7505E	25	52	19.25	18	15	36.7	46.3	22.3	0.174
32206	7506E	30	62	21.25	20	17	51.8	63.7	15.6	0.287
32207	7507E	35	72	24.25	23	19	70.6	89.5	17.9	0.445
32208	7508E	40	80	24.75	23	19	77.9	97.2	18.9	0.532
32209	7509E	45	85	24.75	23	19	80.7	104	20.1	0.573
32210	7510E	50	90	24.75	23	19	82.8	107.6	21	0.626
32211	7511E	55	100	26.75	25	21	108	142.3	22.8	0.853
32212	7512E	60	110	29.75	28	24	132.8	179.6	25	1.17
32213	7513E	65	120	32.75	31	27	160.9	221.7	27.3	1.55
32214	7514E	70	125	33.25	31	27	168.5	237.1	28.8	1.64
32215	7515E	75	130	33.25	31	27	170.3	242.1	30	1.74
32216	7516E	80	140	35.25	33	28	198.1	279	31.4	2.13
32217	7517E	85	150	38.5	36	30	226.7	324	33.9	2.68
32218	7518E	90	160	42.5	40	34	269.8	395.5	36.8	3.44
32219	7519E	95	170	45.5	43	37	302.5	448.4	39.2	4.24
32220	7520E	100	180	49	46	39	341	512	41.9	5.1
32221	7521E	105	190	53	50	43	381	579.2	45	6.26
32222	7522E	110	200	56	53	46	431.7	666.3	47.3	7.43
32306	7606E	30	72	28.75	27	23	81.6	96.4	18.9	0.562
32307	7607E	35	80	32.75	31	25	99	118.3	20.4	0.763
32308	7608E	40	90	35.25	33	27	115.7	147.8	23.3	1.04
32309	7609E	45	100	38.25	36	30	145.3	189.4	25.6	1.4
32310	7610E	50	110	42.25	40	33	177.5	236.1	28.2	1.89
32311	7611E	55	120	45.5	43	35	203	271.4	30.4	2.37
32312	7612E	60	130	48.5	46	37	226.7	303	32	2.9
32313	7613E	65	140	51	48	39	259.6	349.8	34.3	3.51
32314	7614E	70	150	54	52	42	298.9	408.5	36.5	4.34
32315	7615E	75	160	58	55	45	347.4	483.1	39.4	5.37
32316	7616E	80	170	61.5	58	48	387.9	543.1	42.1	6.38
31306	27306E	30	72	20.75	19	14	52.5	60.4	23.1	0.392
31307	27307	35	80	22.75	21	15	65.7	76.8	25.8	0.514
31308	27308	40	90	25.25	23	17	81.4	96.4	29	0.727
31309	27309	45	100	27.25	25	18	95.6	113.8	31.7	0.944
31310	27310	50	110	29.25	27	19	108	128.5	34.8	1.21
31311	27311	55	120	31.5	29	21	129.9	158	37.5	1.56
31312	27312	60	130	33.5	31	22	145.4	176.8	40.4	1.9
31313	27313	65	140	36	33	23	165.7	202.6	44.2	2.37
31314	27314	70	150	38	35	25	186.9	231	46.8	2.86
31315	27315	75	160	40	37	26	208.5	258.9	49.7	3.38
32006X	2007106	30	55	17	17	13	35.7	46.8	13.3	0.17
32007X	2007107	35	62	18	18	14	43.2	59.2	15.1	0.224
32008X	2007108	40	68	19	19	14.5	51.9	71.1	14.9	0.267
32009X	2007109	45	75	20	20	15.5	58.4	81.4	16.5	0.337
32010X	2007110	50	80	20	20	15.5	61.1	89	17.8	0.366
32011X	2007111	55	90	23	23	17.5	80.2	117.2	19.8	0.551
32013X	2007113	65	100	23	23	17.5	82.8	127.3	22.4	0.62
32014X	2007114	70	110	25	25	19	104.3	160.1	23.8	0.839
32015X	2007115	75	115	25	25	19	103.1	160.2	25.2	0.875
32016X	2007116	80	125	29	29	22	141	220	26.8	1.27
32017X	2007117	85	130	29	29	22	139.8	220.3	28.1	1.32
32018X	2007118	90	140	32	32	24	171.3	271	30	1.72
32019X	2007119	95	145	32	32	24	174.6	281.3	31.4	1.79
32020X	2007120	100	150	32	32	24	173.1	281.7	32.8	1.85
32021X	2007121	105	160	35	35	26	205.4	335.8	34.6	2.4
32022X	2007122	110	170	38	38	29	245.7	403.4	36.6	3.02
32024X	2007124	120	180	38	38	29	242.1	404.4	39.3	3.18
33005	3007105	25	47	17	17	14	32.5	42.5	11.1	0.129
33006	3007106	30	55	20	20	16	43.7	58.8	12.8	0.201
33007	3007107	35	62	21	21	17	46.9	63.3	13.5	0.254
33008	3007108	40	68	22	22	18	60.2	79.6	14.1	0.306
33009	3007109	45	75	24	24	19	72.6	100.4	15.9	0.398
33010	3007110	50	80	24	24	19	76.8	110.9	17	0.433
33011	3007111	55	90	27	27	21	94.9	144.7	19	0.651
33012	3007112	60	95	27	27	21	96.7	151.1	19.8	0.691
33013	3007113	65	100	27	27	21	98.1	157.7	20.9	0.732
33014	3007114	70	110	31	31	25.5	134.4	220.4	22	1.07
33015	3007115	75	115	31	31	25.5	133.1	221.2	22.8	1.12
33108	3007708	40	75	26	26	20.5	84.7	110.3	18	0.496
33109	3007709	45	80	26	26	20.5	87.1	117.2	19.1	0.535
33110	3007710	50	85	26	26	20	89.3	124.1	20.4	0.572
33111	3007711	55	95	30	30	23	114.5	164.8	21.9	0.843
33112	3007712	60	100	30	30	23	117.1	173.2	23.1	0.895
33113	3007713	65	110	34	34	26.5	142.8	220.4	26	1.3
33114	3007714	70	120	37	37	29	172.1	267	28.2	1.7
33115	3007715	75	125	37	37	29	176.1	279.6	29.4	1.78
33116	3007716	80	130	37	37	29	179.6	292.3	30.7	1.87
33117	3007717	85	140	41	41	32	215.7	354.2	33.1	2.43
33118	3007718	90	150	45	45	35	252.1	414.7	34.9	3.13
30309X2B	27709	45	100	31.5	29	20.5	90	112.5	31.5	1.04
30613	7713	65	130	45	43	35	209.9	312.1	—	2.601
33133	7813E	65	110	30.5	30	24	102.7	163.5	25.3	1.1
30615	7815E	75	135	44.5	45	36.5	233.3	346.1	—	2.57
33216X2	7816E	80	140	45	45	36.5	215.5	348.2	—	2.74
30619	7819E	95	160	47	—	38	270.3	440.6	—	3.648
30621	7821E	105	170	56	56	44	353	535.4	37.2	4.737
306/47	7909E	47	100	43	43	37	145.4	226.2	26.9	1.661
350210X2	97210E	50	90	48.6	—	39	146.6	184.2	—	1.21

Page 1 of 1

Inch Series

114 models

Showing 1–15 of 114 models · Dimensions in mm · Load ratings Cr/Cor in kN · Weight in kg

型号 (Cone)	Series	d	D	T	B	C	Cr (kN)	Cor (kN)	kg
02474/02420	02400	28.575	68.262	22.225	22.225	17.462	57	67	0.409
02475/02420	02400	31.75	68.262	22.225	22.225	17.462	57	67	0.38
LM11749/LM11710	LM11700	17.462	39.878	13.843	14.605	10.688	24.2	8.8	0.084
LM11949/LM11910	LM11900	19.05	45.237	15.494	16.637	12.065	28.6	9.9	0.122
M12649/M12610	M12600	21.43	50.005	17.526	18.288	13.97	39	11.1	0.169
LM12749/LM12710	LM12700	22	45.237	15.494	16.637	12.065	34	10	0.115
LM12749/LM12711	LM12700	21.986	45.974	15.494	16.637	12.065	34	10	0.123
14125A/14274	14000	31.75	69.012	19.845	19.538	15.875	58	15.5	0.348
14125A/14276	14000	31.75	69.012	19.845	19.538	15.875	58	15.5	0.356
14125A/14282	14000	31.75	71.996	19.002	19.538	15.032	58	15.5	0.447
14125A/14283	14000	31.75	72.085	22.385	19.538	18.415	58	15.7	0.412
15100/15245	15000	25.4	62	19.05	20.638	14.288	46.5	54	0.299
15123/15243	15000	31.75	61.912	18.161	19.05	14.288	46.5	54	0.244
15123/15244	15000	31.75	62	19.749	19.05	15.875	46.5	54	0.274
15123/15245	15000	31.75	62	18.161	19.05	14.288	46.5	54	0.244
15123/15250	15000	31.75	63.5	20.638	19.05	15.875	45	54.5	0.274
15123/15250X	15000	31.75	63.5	20.638	19.05	15.875	45	54.5	0.273
15578/15520	15500	25.4	57.15	17.463	17.462	13.495	39.5	45.5	0.216
15580/15520	15500	26.988	57.15	17.463	17.462	13.495	39.5	45.5	0.206
15590/15520	15500	28.575	57.15	17.462	17.462	13.495	39.5	45.5	0.196
18590/18520	18500	41.275	73.025	16.667	17.462	12.7	46	55.5	0.281
LM102949/LM102910	LM102900	45.242	73.431	19.558	19.812	15.748	54	76	0.307
JLM104948/JLM104910	LM104900	50	82	21.5	21.5	17	69.5	94	0.42
LM104949/LM104911	LM104900	50.8	82.55	21.116	22.225	16.51	69.5	94	0.419
18780/18720	18700	46.038	85	17.462	17.462	13.495	49.5	65	0.42
18790/18720	18700	50.8	85	17.462	17.462	13.495	49.5	65	0.374
HM212044/HM212011	HM212000	60.325	122.238	38.1	38.354	29.718	187	244	2.02
HM212046/HM212010	HM212000	63.5	122.238	38.1	38.354	29.718	187	244	1.96
HM212049/HM212010	HM212000	66.675	122.238	38.1	38.354	29.718	187	244	1.86
HM218248/HM218210	HM218200	89.974	146.975	40	40	32.5	227	340	2.55
25580/25520	25500	44.45	82.931	23.812	25.4	19.05	76	98	0.56
25580/25521	25500	44.45	83.058	23.812	25.4	19.05	76	98	0.553
25584/25520	25500	44.983	82.931	23.812	25.4	19.05	76	98	0.555
25590/25520	25500	45.618	82.931	23.812	25.4	19.05	76	98	0.543
27687/27620	27600	82.55	125.412	25.4	25.4	19.845	102	163	1.07
28580/28520	28500	50.8	89.98	24.75	25.4	19.987	83.5	116	0.651
28580/28521	28500	50.8	92.075	24.608	25.4	19.845	83.5	116	0.703
28584/28520	28500	52.388	89.98	24.75	25.4	19.987	83.5	116	0.651
28584/28521	28500	52.388	92.075	24.608	25.4	19.845	83.5	116	0.703
28980/28920	28900	59.977	101.6	25.4	25.4	19.845	90.5	134	0.818
28985/28920	28900	60.325	101.6	25.4	25.4	19.845	90.5	134	0.811
29585/29520	29500	63.5	107.95	25.4	25.4	19.05	91.5	140	0.924
29590/29522	29500	66.675	107.95	25.4	25.4	19.05	91.5	140	0.869
LM300849/LM300811	LM300800	40.988	67.975	17.5	18	13.5	46	62.5	0.239
366/362	365	50	90	20	22.225	15.875	76.5	90.5	0.543
366/362A	365	50	88.9	20.638	22.225	16.513	76.5	90.5	0.529
368/362	365	50.8	90	20	22.225	15.875	76.5	90.5	0.545
368A/362	365	50.8	90	20	22.225	15.875	76.5	90.5	0.525
369A/362	365	47.625	90	20	22.225	15.875	76.5	90.5	0.578
369A/362A	365	47.625	88.9	20.638	22.225	16.513	76.5	90.5	0.559
370A/362	365	50.8	90	20	22.225	15.875	76.5	90.5	0.515
385/382	385	55	98.425	21	21.946	17.826	78	96.5	0.661
385/382A	385	55	96.838	21	21.946	15.875	78	96.5	0.616
385/382S	385	55	96.838	25.4	21.946	20.274	78	96.5	0.682
385A/382	385	55.8	98.425	21	21.946	17.826	78	96.5	0.718
385A/382A	385	55.8	96.838	21	21.946	15.875	78	96.5	0.676
386A/382	385	47.625	98.425	21.001	21.946	17.826	78	96.5	0.775
387/382	385	57.15	98.425	21	21.946	17.826	80.4	101	0.764
387/382A	385	57.15	96.838	21	21.946	15.875	78	96.5	0.583
387A/382	385	57.15	98.425	21	21.946	17.826	78	96.5	0.628
387A/382A	385	57.15	96.838	21	21.946	15.875	78	96.5	0.581
387AS/382	385	57.15	98.425	21	21.946	17.826	78	96.5	0.621
387AS/382A	385	57.15	96.838	21	21.946	15.875	78	96.5	0.576
387S/382	385	57.15	98.425	21.001	21.946	17.826	78	96.5	0.642
388A/382	385	57.531	98.425	21	21.946	17.826	78	96.5	0.62
388A/382A	385	57.531	96.838	21	21.946	15.875	78	96.5	0.575
389A/382	385	53.975	98.425	21	21.946	17.826	74.5	91.5	0.678
389A/382A	385	53.975	96.838	21	21.946	15.875	74.5	91.5	0.63
389A/382S	385	53.975	96.838	25.4	21.946	20.274	74.5	91.5	0.699
L44640/L44610	L44600	23.812	50.292	14.224	14.732	10.668	28.8	34	0.137
L44649/L44610	L44600	26.988	50.292	14.224	14.732	10.668	28.8	34	0.12
47678/47620	47600	76.2	133.35	33.338	33.338	26.195	153	235	1.92
47679/47620	47600	76.2	133.35	33.338	33.338	26.195	153	235	1.93
47681/47620	47600	80.962	133.35	33.338	33.338	26.195	153	235	1.776
47686/47620	47600	82.55	133.35	33.338	33.338	26.195	153	235	1.72
47687/47620	47600	82.55	133.35	33.338	33.338	26.195	153	235	1.71
LM48548/LM48510	LM48500	34.925	65.088	18.034	18.288	13.97	46.5	56	0.249
495/492A	495	82.55	133.35	30.162	29.769	22.225	129	189	1.525
495/493	495	82.55	133.35	30.162	29.769	22.225	129	189	1.64
495A/492A	495	76.2	133.35	30.162	29.769	22.275	129	189	1.71
495A/493	495	76.2	136.525	30.162	29.769	22.275	129	189	1.83
497/492A	495	85.725	133.35	30.162	29.769	22.275	129	189	1.43
498/492A	495	84.138	133.35	30.162	29.769	22.275	133	198	1.48
LM501349/LM501310	LM501300	41.275	73.431	19.558	19.812	14.732	56	69.5	0.335
LM501349/LM501314	LM501300	41.275	73.431	21.43	19.812	16.604	56	69.5	0.335
HM518445/HM518410	HM518400	88.9	152.4	39.688	39.688	30.162	253	365	2.838
593/592	595	88.9	152.4	39.688	36.322	33.338	180	279	2.83
593/592A	595	88.9	152.4	39.688	36.322	30.162	180	279	2.78
594/592	595	95.25	152.4	39.688	36.322	33.338	180	279	2.56
594/592A	595	95.25	152.4	39.688	36.322	30.162	180	279	2.51
595/592	595	82.55	152.4	39.688	36.322	33.338	180	279	3.08
595/592A	595	82.55	152.4	39.688	36.322	30.162	180	279	3.02
596/592	595	85.725	152.4	39.688	36.322	33.338	180	279	3.14
596/592A	595	85.725	152.4	39.688	36.322	30.162	180	279	2.9
598/592	595	92.075	152.4	39.688	36.322	33.338	180	279	2.94
598/592A	595	92.075	152.4	39.688	36.322	30.162	180	279	2.65
JL69349/JL69310	L69300	38	63	17	17	13.5	38.5	52.5	0.198
LM78349/LM78310A	LM78300	34.988	61.973	16.7	17	13.6	37	48	0.209
HM803146/HM803110	HM803100	41.275	88.9	30.162	29.37	23.02	93.5	125	0.989
HM803149/HM803110	HM803100	44.45	88.9	30.162	29.37	23.02	93.5	125	0.849
HM807040/HM807010	HM807000	44.45	104.775	36.512	36.512	28.575	138	189	1.62
HM807044/HM807010	HM807000	49.212	104.775	36.512	36.512	28.575	138	189	1.52
HM807046/HM807010	HM807000	50.8	104.775	36.512	36.512	28.575	138	189	1.49
HM807049/HM807010	HM807000	53.975	104.775	36.512	36.512	28.575	138	189	1.41
JLM813049/JLM813010	LM813000	70	110	26	25	20.5	97	150	0.889
M84548/M84510	M84500	25.4	57.15	19.431	19.431	14.732	42	48.5	0.241
M88649/M86610	M86600	30.162	64.292	21.433	21.433	16.67	51.5	64.5	0.336
M88048/M88010	M88000	33.338	68.262	22.225	22.225	17.462	56.5	71	0.378
HM88649/HM88610	HM88600	34.925	72.233	25.4	25.4	19.842	65	84.5	0.489
HM88649/HM88611	HM88600	34.925	71.973	27	25.4	21.443	65	84.5	0.483
HM89443/HM89410	HM89400	33.338	76.2	29.37	28.575	23.02	78	105	0.688
HM89446/HM89410	HM89400	34.925	76.2	29.37	28.575	23.02	78	105	0.646
HM89448/HM89410	HM89400	36.512	76.2	29.37	28.575	23.02	78	105	0.629
HM89449/HM89410	HM89400	36.512	76.2	29.37	28.575	23.02	78	105	0.626

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Frequently Asked Questions

What is the difference between metric and inch tapered roller bearings?

Metric tapered roller bearings follow ISO 355 / DIN 720 standards with dimensions in millimetres (e.g. 30204, 32208, 33212). Inch series follow ABMA standards with dimensions in inches, identified by cone (inner ring + rollers + cage) and cup (outer ring) part numbers (e.g. LM11949/LM11910, HM218248/HM218210). OTT supplies both series from the same factory with full interchangeability to Timken and SKF dimensions.

How do I select the correct tapered roller bearing size?

Tapered roller bearing selection depends on bore diameter (d), outer diameter (D), overall width (T or B+C), and required load capacity (Cr/Cor). For replacements, match the OEM part number or provide d × D × T dimensions. OTT engineers can assist with load calculations and cross-reference lookups. Contact us with your application details for a recommendation.

What Timken equivalent numbers does OTT tapered roller bearings cover?

OTT inch-series tapered roller bearings are fully interchangeable with Timken inch cone/cup pairs including LM11949/10, LM12749/10, LM48548/10, LM78349/10, HM218248/10, 25580/25520, 29590/29520, and 100+ additional models. All dimensional tolerances match ABMA Class 4 (equivalent to AFBMA Grade 4 / ISO P0). Contact us with your Timken part number for confirmation.

What is the typical load capacity range for OTT tapered roller bearings?

OTT tapered roller bearings range from Cr = 14 kN (30202, d=15mm) to Cr = 300+ kN for heavy-duty sizes. The metric 32216 (d=80mm) carries Cr = 200 kN, and the inch HM218248 (d=88.9mm) carries Cr = 223 kN. OTT can provide full load rating data and L10 life calculations for your application.

Can OTT supply matched bearing pairs for pre-loaded applications?

Yes. OTT supplies factory-matched tapered roller bearing pairs for face-to-face (DF), back-to-back (DB), and tandem (DT) arrangements. Matched pairs are pre-selected for consistent preload and are commonly used in automotive wheel hub applications, precision machine tool spindles, and differential assemblies.