/ Spherical roller bearings

Tapered Bore Bearing

1.Product Introduction: Self-aligning roller bearings with tapered inner holes, which can adjust the radial clearance through nuts, and are suitable for scenarios where the shaft system needs fine adjustment.
2.Structure Type: The inner ring has a tapered hole (1:12 or 1:30), the outer ring has double ribs, with double-row spherical rollers + cage, and it is open.
3.Size Range: Inner diameter 30 - 500mm, outer diameter 62 - 1000mm, width 20 - 200mm.
4.Material: Inner ring / outer ring: GCr15 bearing steel, rollers: GCr15 bearing steel, cage: stamped steel / brass.
5.Precision: P0/P6 level.
6.Common Inner Tapered Hole: 1:12 taper (suitable for most shaft systems), 1:30 taper (for precise fine adjustment).
7.Application Fields: Electric motor spindles, auxiliary rolls of rolling mills, heavy-duty fans, mining machinery.
8.Key Inspection Items: Tapered hole precision, adjustable range of radial clearance, self-aligning angle.

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Product Description

Data Sheet

Tapered Bore Bearing: Precision Solutions for Demanding Industries

Engineered to withstand extreme loads, high temperatures, and harsh environments, our tapered bore bearings deliver unmatched reliability for industrial applications. With 30+ years of specialized expertise, LUOYANG INNO BEARING CO., LTD provides fast 48-hour delivery for standard sizes and custom designs in 15-20 days.

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Product Specifications & Applications

Key Features

Sizes: Standard (ID φ20mm–φ5000mm) / Fully Customizable
Materials: High-purity forged steel (GCr15/Si3N4)
Precision: ABEC-3 to P4 (medical-grade)
Taper Options: 1:12 (general use) or 1:30 (fine adjustment)

Top Applications

Metallurgy: Backup rollers in rolling mills (150°C continuous operation).
Port Machinery: Slewing rings for ship-to-shore cranes.
Mining: Conveyor pulleys with dust-resistant seals.

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Industry-Specific Benefits

For Metallurgy & Steel Plants

Our bearings feature graphite lubrication slots to prevent grease degradation at 150°C. The thermal-stable design minimizes deformation under rapid temperature changes.

For Port & Marine Equipment

Triple-layered seals and seawater-proof coatings protect against saltwater corrosion. Impact-resistant cages handle sudden axial shocks during container handling.

For Medical & Precision Machinery

Ultra-low noise (<35dB) and P4-grade accuracy ensure smooth operation in MRI machines. Non-magnetic ceramic variants eliminate interference risks.

Customization Made Simple

1. Submit your CAD drawings or specifications.

2. Review technical feasibility within 72 hours.

3. Test prototypes under real-world conditions (optional).

4. Produce with modular tooling for sizes up to φ3000mm+.

Example: A φ2500mm tapered bore bearing for a wind turbine hub was delivered in 18 days, reducing client downtime by 40%.

Quality Assurance You Can Trust

Every product undergoes:

Raw material spectrometry (SGS-certified steel).
12+ performance tests (ISO 281 fatigue life, ISO 15242 vibration analysis).
100% final inspection for radial clearance (±0.01mm).

Result: 99.9% ex-factory qualification rate since 2020.

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Fast Global Delivery

1,000+ standard bearings ready to ship within 48 hours.
Regional warehouses in EU, North America, and ASEAN.
Export-safe packaging with VCI anti-rust film.

Lifetime Technical Support

We provide:

Free IoT monitoring software to track bearing health in real time.
Predictive lubrication schedules tailored to your operating conditions.
24/7 engineering support for installation and alignment.

Why Choose Us?

✅ 30+ Years of Focus: Solely dedicated to product innovation.

✅ Cost Efficiency: Hybrid production model saves 40% vs. traditional OEMs.

✅ Full Traceability: Access lifetime quality records via blockchain-enabled logs.

FAQ

1. How do your bearings handle 300°C environments?

We use high-purity steel with graphite-infused raceways to maintain lubrication at extreme temperatures.

2. Can you customize bearings for 1000 RPM port cranes?

Yes! Our impact-resistant cages and balanced roller sets are optimized for high-speed, high-load scenarios.

3. What testing ensures heavy-load reliability?

Each bearing undergoes 3,000-hour accelerated lifespan tests under 150% rated load.

4. How do you achieve 15-20 day lead times for custom orders?

Modular tooling and pre-hardened material stocks enable rapid production scaling.

Contact Us

Need a tapered bore bearing solution? Contact our engineers at sales@inno-bearing.com for a response within 2 hours.

Overall Dimensions									Rated Load		Limiting Rotational Speed		Bearing Designation		Minimum Load A	Mounting Dimensions			Weight
d	d1	D	D1	B	C	H	S	rmin	Dynamic Load C	Static Load C。	Grease	Oil	Current Model	Original Model	Minimum Load A	da	Da	ramax	Weight
mm									kN		r/min								kg
90	128	190	169.6	22	29	60	56	2.1	624	1750	1260	1800	29418		0.41	135	158	2	7.78
100	129	170	153	15	20.8	42	58	1.5	410	1280	1120	1600	29320	9039320	0.166	132	148	1.5	3.66
100	140	210	187.6	24	32	67	62	3	762	2170	760	1000	29420		0.64	150	175	2.5	10.5
110	135	190	175	30	24	48	64	2	347	970	1200	1800	9069322	9069322	0.138	145	165	2	5.46
	150	230	195	43	35	73	69	3	545	1479	800	1200	9069422	9069422	0.393	165	192	2.5	12.8
	150	230	195	43	35	73	69	3	545	1479	800	1200	9069422Y	9069422Y	0.393				12.8
120	156.5	210	192.7	18	26.5	54	70	2.1	607	1940	1120	1600	29324		0.44	160	182	2	7.48
130	184	270	240.6	31	41	85	81	4	1210	3570	800	1200	29428		1.7	195	227	3	21.9
140	181	240	221.8	20	29	60	82	2.1	760	2530	980	1400	29328		0.8	185	208	2	10.6
150	185	250	220	36	31	60	87	2.1	525	1670	850	1300	9069330	9069330	0.54	195	220	2	10.2
150	207.6	300	270.5	32	43.5	90	92	4	1240	4390	770	1100	29430		2.6	220	253	3	28.2
160	200	270	240	45	32	67	92	3	610	2240	800	1200	9069332	9069332	0.736	210	236	2.5	13.5
160	218	320	289.5	34	46	95	99	5	1440	5050	760	1000	29432		3.2	230	271	4.	34.3
170	236	340	300	62	52	103	104	5	1400	4120	650	950	9069434		4.1	245	288	4	38.8
170	235	340	308.8	37	50	103	104	5	1820	5900	650	950	29434		4.3	245	288	4	41.9
180	225	300	270	46	36	73	103	3	790	2713	700	1000	9069336	9069336	0.883	235	263	2.5	18.3
	230	300	276.8	25	34.5	73	103	3	967	3864	700	1000	29336		1.7	235	263	2.5	19.4
	250	360	325.5	39	53	109	110	5	1770	6460	630	900	29436		5.4	260	305	4	49.2
190	224	270	250	30	24	48	110	2	420	1746	950	1500	9069238	9069238	0.442	220	244	2	8
d 190～300mm
Overall Dimensions									Rated Load		Limiting Rotational Speed		Bearing Designation		Minimum Load A	Mounting Dimensions			Weight
d	d1	D	D1	B	C	H	S	rmin	Dynamic Load C	Static Load C。	Grease	Oil	Current Model	Original Model	Minimum Load A	da	Da	ramax	Weight
mm									kN		r/min								kg
190	226	270	253.3	14	25.5	48	103	2	2100	2260	950	1500	29238			220	244	2	7.87
190	268	380	340	41	53.5	115	117	5	2070	7594	430	600	29438	9039438	6.228	275	322	4	56.4
200	270	400	340	62	62	122	122	5	1740	6054	430	600	9069440	9069440	5.685	290	338	4	60.6
200	278	400	360	43	59	122	122	5	2760	9000	600	800	29440E	9039440E	5.978	290	338	4	71.1
220	254	300	278	29	26	48	117	2	504	1932	438	1300	9069244	9069244	0.491	260	277	2	11.2
	270	360	320	52	44	85	125	4	970	3769	560	800	9069344	9069344	2.059	285	316	3	32.5
	278	360	332.9	29	41	85	125	4	1500	5470	560	800	29344		3.8	285	316	3	31.9
	290	420	360	76	58	122	132	6	1830	6624	400	560	9069444	9069444	6.665	310	360	5	68.7
240	280	340	323.9	19	31.2	60	130	2.1	800	3450	770	1100	29248E	9039248E	1.483	285	311	2	19.3
	290	380	340	52	44	85	135	4	1320	4251	560	800	9069348	9069348	2.556	300	337		33.8
	310	440	380	62	62	122	142	6	1920	7158	380	530	9069448	9069448	7.645	330	381		70
260	295	360	330	38	30	60	139	2.1	645	2877	700	1000	9069252	9069252	1.128	305	331	2	16.9
	302	360	340.8	19	30	60	139	2.1	944	4000	700	1000	29252		1.5	305	331	2	17.1
	315	420	370	60	46	95	148	5	1390	5793	480	670	9069352	9069352	4.705	330	372	4	45.6
	327	420	390	32	45	95	148	5	2220	8300	600	800	29352E	9039352E	6.5	330	372	4	53.6
	335	480	415	80	66	132	154	6	2120	8118	340	480	9069452	9069452	9.81	360	419	5	91.8
	346	480	434.9	48	63	132	154	6	2730	10800	450	600	29452		16	360	419	5	99.2
280	323	380	360.4	19	30	60	150	2.1	852	4330	700	1000	29256		1.7	325	351	2	18.1
	335	440	390	62	46	95	158	5	1410	5980	450	630	9069356	9069356	5.097	350	394	4	48.4
	348	440	409.8	32	46	95	158	5	1980	7710	650	870	29356		7	350	394	4	50.2
	365	520	450	75	72	145	166	6	2550	9828	300	480	9069456	9069456	14.5	390	446	5	115
	372	520	475.6	52	70	145	166	6	3800	13450	400	550	29456		23	390	446	5	130
300	365	480	425	58	52	109	168	5	1870	7640	400	560	9069360	9069360	8.527	380	429	4	61.4
d 320～500mm
Overall Dimensions									Rated Load		Limiting Rotational Speed		Bearing Designation		Minimum Load A	Mounting Dimensions			Weight
d	d1	D	D1	B	C	H	S	rmin	Dynamic Load C	Static Load C。	Grease	Oil	Current Model	Original Model	Minimum Load A	da	Da	ramax	Weight
mm									kN		r/min								kg
320	385	500	445	68	55	109	180	5	2030	7915	380	530	9069364	9069364	8.919	400	449	4	73.4
	369	440	413	21	38	73	172	3	1300	5610	800	1100	29264		2.8	375	406	2.5	29.4
	410	580	500	95	75	155	191	7.5	2930	11660	240	360	9069464	9069464	20.1	435	507	6	171
	424	580	528.5	55	74	155	191	7.5	3910	16180	350	500	29464		35	435	507	6	168
	424	580	528.5	55	74	170	176	7.5	3910	16180	350	500	29464/P6		35	435	507	6	168
	424	580	530	70	74	170	176	7.5	4520	16300	350	500	29464X2		35	435	507		185
340	390.5	460	436.5	21	37	73	183	3	1410	6440	800	1100	29268		3.1	395	427	2.5	32.3
	410	540	480	74	62	122	192	5	2710	11000	420	600	9069368	9069368	11	430	484	4	94.9
	462	620	590	61	82	170	201	7.5	4550	17480	220	320	29468	9039468	30.19	465	541	6	226
360	442	560	523.1	41	59.5	122	202	5	2744	12707	550	700	29372		15	450	504	4	104
360	460	640	555	87	85	170	210	7.5	3790	15440	190	300	9069472	9069472	35.38	485	560	6	199
380	439	520	497	27	41.8	85	202	4	1460	6800	550	750	29276E	9039276E	5.6	440	480	3	50
400	450	540	500	55	42	85	212	4	1260	7060	430	600	9069280	9069280	6.763	460	500	3	49
	475	620	555	81	65	132	225	6	2860	12050	260	380	9069380	9069380	20.59	500	557	5	134
	510	710	620	113	93	185	236	7.5	4820	19060	260	380	9069480	9069480	53.8	540	622	6	3.88
420	514.5	650	608.3	48	68.5	140	235	6	3660	17600	400	500	29384		26	525	585	5	161
440	508	600	570.2	30	48	95	235	5	2350	11100	550	750	29288		12	510	554	4	72.7
460	527	620	690.8	30	47	95	245	5	2440	11800	430	600	29292		12	530	575	4	81
460	567	710	685	51	72	150	257	6	4310	19000	320	450	29392	9039392	34	575	628	5	217
480	540	650	600	65	50	103	259	5	1950	10500	340	480	9069296	9069296	14.99	555	603	4	89.4
500	560	670	620	60	50	103	268	5	1950	10540	320	450	90692/500	90692/500	15	575	622	4	89.6
d 500～1620mm
Overall Dimensions									Rated Load		Limiting Rotational Speed		Bearing Designation		Minimum Load A	Mounting Dimensions			Weight
d	d1	D	D1	B	C	H	S	rmin	Dynamic Load C	Static Load C。	Grease	Oil	Current Model	Original Model	Minimum Load A	da	Da	ramax	Weight
mm									kN		r/min								kg
500	569	670	637.3	33	52	103	268	5	2590	13000	400	560	292/500		16	575	622	4	95.7
	590	750	675	94	74	150	280	6	3520	16900	180	280	90693/500	90693/500	39.99	615	683	5	203
	590	750	675	94	74	150	280	6	3520	16900	180	280	90693/500K	90693/500K	40	630	675	5	203
	630	870	760	140	110	224	290	9.5	6290	27340	120	180	90694/500	90694/500	110.8	670	765	8	520
	652.5	870	794.5	81	107.5	224	290	9.5	7850	34600	200	300	294/500		130	670	765	8	521
530	601.5	710	681.2	39	57	109	288	5	3220	16400	400	550	292/530		22	620	655	4	114
	690	920	841.5	85	110.4	236	309	9.5	9000	41950	120	160	294/530E	90394/530E	179.2	700	810	8	624
	700	920	840	145	116	236	309	9.5	8386	32630	120	160	90694/530	90694/530	137.8	700	810	8	573
560	625	750	695	72	58	115	300	5	2430	13320	260	380	90692/560	90692/560	23.92	645	697	4	127
600	688	800	780	39	65	122	321	5	3420	20500	240	340	292/600	90392/600	37.04	690	744	4	172
600	750	1030	900	156	130	258	360	12	9626	37580	100	130	90694/600	90694/600	223	800	900	10	700
630	705	850	785	84	64	132	338	6	3270	17760	190	300	90692/630	90692/630	42.73	730	789	5	188
630	728	850	830	42	67	132	338	6	4634	24450	190	300	292/630	90392/630	52.95	730	789	5	218
670	750	900	830	86	70	140	365	6	3670	20280	180	280	90692/670	90692/670	55.67	790	825	5	218
710	915	1220	1131.8	113	150	308	415	15	15500	67400	120	160	294/710		560	925	1073	12	1400
750	935	1280	1120	195	155	315	450	15	14340	58590	80	100	90694/750	90694/750	412.8	1000	1130	12	1309
750	964	1280	1183	122	152	315	436	15	159000	70800	140	200	294/750		590	1000	1130	12	1650
800	1034	1360	1310	120	165	335	462	15	20000	91000	130	180	294/800		680	1080	1185	12	1870
1060	1180	1400	1300	128	103	206	566	12	10500	58500	120	160	906921/1060	90692/1060	300	1225	1290	8	824
1320	1380	1540	1510	87	72	175	1446	6	4050	50400	70	90	691/1320	691/1320	140	1430	1470	8	480
1620	1700	1860	1799	45	80	150	850	6	6150	48400	50	70	292/1620			1740	1780	10	552