/ Four-point angular contact ball bearings

4 Point Angular Contact Ball Bearing

1.Product Introduction: The same as four-point contact ball bearings, strengthening the structural stability of the "four-point contact", optimizing the radius of curvature of the raceway, suitable for scenarios with extremely high requirements for contact accuracy.
2.Structure Type: Inner ring / outer ring (high-precision double circular arc raceway, processed by ultra-precision grinding) + precision steel balls + brass cage. The position of the contact points is precisely controlled.
3.Size Range: Inner diameter: 20 - 500mm, outer diameter: 47 - 800mm, width: 18 - 180mm.
4.Material: Inner ring / outer ring: GCr15 (ultra-precision ground), rolling elements (steel balls): GCr15 (ultra-precision ground), cage: brass.
5.Accuracy: Conventional P0 grade, precision models are of P6/P5/P4 grades.
6.Application Fields: Spindles of precision machine tools, aerospace equipment, high-end testing instruments, semiconductor manufacturing equipment.
7.Key Inspection Items: Deviation of contact point position (≤ 0.002mm), radial runout (≤ 0.001mm), running noise (≤ 38dB), surface roughness of the raceway (Ra ≤ 0.01μm).

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Product Description

DATA SHEET

4 Point Angular Contact Ball Bearing: Engineered for Extreme Performance

In heavy industries like metallurgy and mining, equipment demands bearings that endure relentless stress. 4 Point Angular Contact Ball Bearings excel here, combining axial/radial load handling (up to 850kN) and extreme-temperature resilience (-50°C to +500°C). At LUOYANG INNO BEARING CO., LTD, we refine these bearings with raceway curvature optimization and ultra-pure steel for unmatched precision in harsh conditions.

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Key Specifications

Load Capacity: 850kN static axial load, 320kN dynamic radial load
Temperature Range: -50°C to +150°C (ceramic cage options available)
Accuracy: ISO P4/P5 grades (radial runout ≤0.001mm)
Noise: ≤35dB at 1,800 RPM
Material: GCr15/440C steel, vacuum-degassed and induction-hardened

Where They Excel?

Demanding Industrial Applications

Metallurgy: Rolling mill stands, continuous casting machines
Mining: Crushers, conveyor drive systems
Heavy Machinery: High-speed gearboxes, hydraulic presses

Our bearings thrive where others fail—maintaining <38dB noise levels under 300kN shock loads or resisting abrasive wear in dusty environments.

Custom-Built for Your Challenges

Need non-standard dimensions or specialized performance? Our modular engineering delivers:

Size Range: ID 20mm–5000mm, OD up to 800mm (expandable)
Rapid Prototyping: 15–20 days for φ3000mm custom orders (vs. 30+ industry standard)
Environment-Specific Designs:
MoS2-coated cages for 500°C operations
Double-row configurations for 30% higher axial rigidity
Dacromet coatings for humid climates

Proven Reliability: How We Test

Every 4 Point Angular Contact Ball Bearing undergoes 12+ validation checks:

1. Material Integrity: Spectral analysis (ASTM E1251), hardness ≥60 HRC

2. Precision Grinding: Raceway roughness Ra ≤0.01μm

3. Performance Testing:

50,000-hour accelerated lifespan simulation (DIN 628)
Vibration analysis per ISO 15242

Result? 99.9% ex-factory qualification rate.

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Fast Global Delivery, Always Ready

Stock Availability: 1,000+ standard models (ID 50mm–2000mm)
Shipping: 48-hour dispatch from regional hubs (EU, Asia, Americas)
Large Orders: Dedicated project managers streamline 500+ unit shipments

Beyond the Bearing: Lifetime Support

We partner with you through every phase:

Free Load Analysis: Optimize bearing selection for your equipment
On-Site Installation: Engineer-guided mounting to prevent misalignment
Smart Monitoring: IoT-enabled sensors (optional) for real-time health tracking

FAQ

1. How do your bearings handle 500°C in steel mills?

Our high-temp series uses ceramic-coated cages and MoS2 lubrication, resisting thermal expansion while maintaining <0.002mm contact point deviation.

2. Can you customize bearings for mining crushers?

Yes. We adjust raceway curvature, seal types, and cage materials to handle 300kN+ shock loads and abrasive dust.

3. How is 15-day custom production possible?

Modular manufacturing pre-machines components, reducing φ3000mm bearing lead times by 30%.

4. What's checked during quality inspections?

Vibration (≤35dB), lifespan (L10 ≥50k hours), thermal tolerance (±0.0015mm/°C), and 8+ other parameters.

5. Do you stock common sizes?

Yes. 1,000+ standard models ship in 48 hours. Urgent orders? Expedited air freight available.

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Contact Us

Need a 4 Point Angular Contact Ball Bearing that outlasts your equipment?

[Get Your Free Load Calculation] | [Request Custom Quote in 15 Days]

Contact our engineers: sales@inno-bearing.com

d 10~75mm
Overall Dimensions						Rated Load		Limiting Rotational Speed		Bearing Designation		Mounting Dimensions			Weight
d	D	B	T	rmin	r1	Dynamic Load C	Static Load C。	Grease	Oil	Current Model	Original Model	d1min	Damax	ramax	Weight
mm						kN		r/min				mm			kg
10	28	8	8	0.3	0.3	5.82	2.53	24000	30000	S7600	6700	12.4	25.6	0.3	0.0227
17	35	10	10	0.3	0.3	8.23	4.53	15000	20000	S71003	106103	19.4	32.6	0.3	0.0452
20	47	12	12	1.1	0.5	15.5	8.92	15000	19000	S70204X2	6704	27	40	1	0.103
25	62	17	20	1.1	0.6	27	15.6	11000	14500	SN7305X2/YA	26705	32	55	1	0.276
25	67	20.6	34	1	0.8	23.5	19.3	11000	14500	4605-2RS	186705	31	61	1	0.523
26	62	17	20	1.1	0.5	27	15.6	11000	14500	S76/26/YA	26905	33	55	1	0.281
32	72	24.5	30	1.1	0.5	32.8	20.5	18000	12000	SN76/32/YA	26706	39	65	1	0.454
30	72	19	19	1.1		38.5	38	6700	9000	QJS306	176306	37	65	1	0.418
35	59.482	14.5	14.5	1.1	0.5	21.4	14.9	8000	10000	LR7607	226707	42	53	1	0.105
35	80	29	33.5	1.5	0.5	40.2	24.7	9000	11000	SN72307X2/YA	26707	44	71	1.5	0.561
53	84	16.15	20	1.1	0.6	17.4	14.7	7300	9200	46/53/YA	996911K1	60	77	1	0.44
63	102	23	27	2	1	31.5	21.6	6000	8000	B76/63/YA	26913	73	92	2	0.707
65	102	16.5	21.5	1.1	1.1	26.9	21.7	6000	8000		996713	72	95	1	0.569
65	140	33	33	2.1	2.1	118	132	3800	5300	QJ313	176313	77	128	2.1	2.7
70	125	24	24	1.5		51.8	43.1	3200	4300	QJS214	276214	79	114	1.5	1.31
75	160	37	37	2.1	2.1	163	204	3400	4800	QJ315N2	176315	87	148	2.1	4.04
d 80～180mm
Overall Dimensions						Rated Load		Limiting Rotational Speed		Bearing Designation		Mounting Dimensions			Weight
d	D	B	T	rmin	r1	Dynamic Load C	Static Load C。	Grease	Oil	Current Model	Original Model	d1min	Damax	ramax	Weight
mm						kN		r/min				mm			kg
80	140	21	26.5	2	1	51	48	3500	4400	S7216X2/YA	26216	90	130	2	1.33
81	107	17	17	0.5	0.5	16.4	24.6			LY-Q017		83.5	104.5	0.5	0.312
90	140	24	24	1.5		59.1	56.6	6000	7600	QJ1018	1176118	99	131	2	1.47
90	190	43	43	3		193	259	2400	3400	QJ318	176318	104	176	2.5	6.51
91	117	20	20	0.5	0.5	17	26.9			LY-Q018		93.5	114.5	0.5	0.346
100	180	34	34	21	2.1	152	215	2800	3800	QJ220N2		112	168	2.1	4.22
120	165	34	34	1.1	0.8	85.4	131	1400	2000	3924D	3356924	127	158	1	2.51
	215	40	40	2.1	2.1	209	318	2400	3200	QJ224N2		132	203	2.1	7.04
	260	55	55	3	3	263	365	1600	2200	QJF324	116324	134	246	2.5	15.6
140	210	33	33	2	2	206	273	3200	4000	QJF1028	176128	150	200	2	4.33
	250	42	42	3	3	252	436	2000	2800	QJ228N2		154	236	2.5	10.1
	300	62	62	4	4	361	646	1700	2400	QJ328		158	382	3
150	225	35	35	2.1	2.1	169	298	3000	3700	QJF1030	176130	162	213	2.1	5.16
160	220	45	45	2	1	125	208	1000	1500	3932D	3356932	170	210	2	5.41
160	290	48	48	3	3	286	533	1700	2400	QJ232		174	276	2.5	16
170	230	45	45	2	1	128	220	950	1450	3934D	3356934	180	220	2	5.9
	260	42	42	2.1	2.1	221	409	1800	2400	QJF1034		182	248	2.1	8.18
	310	52	52	4	4	382	742	2000	1500	QJ234N2	176234K	188	292	3	18.107
180	280	46	46	2.1	2.1	246	481	1300	1800	Qj1036	176136	192	268	2.1	11.4
d 180～1060mm
Overall Dimensions						Rated Load		Limiting Rotational Speed		Bearing Designation		Mounting Dimensions			Weight
d	D	B	T	rmin	r1	Dynamic Load C	Static Load C。	Grease	Oil	Current Model	Original Model	d1min	Damax	ramax	Weight
mm						kN		r/min				mm			kg
180	280	46	46	2.1	2.1	246	481	1300	1800	QJ1036N2	176136K	192	268	2.1	11.4
190	260	33	33	2	2	125	177	2600	3200	QJ1938	1176938	200	250	2	6.02
220	300	60	60	2.5	1.2	219	392	1900	2400	3944D	3356944	234	286	2.1	13.1
220	340	56	56	3	3	306	653	1200	1700	QJ1044N2	176144	234	326	2.5	20.2
240	440	72	72	4	4	649	1200	1000	1500	QJF248M		258	222	3	51.6
260	368	48	48	2.1	2.1	298	676	1000	1400	QJF1952X2		272	356	2.1	16.9
280	420	65	65	4	4	410	1010	1400	1800	QJF1056	176156	298	402	3	34.3
280	389.5	65	65	4	4	433	803	900	1100	QJF1056X1		298	371	3	23.2
320	440	50	100	4	4	237	492			7664D		338	422	3
	480	74	74	4	4	447	587	1200	1500	QJF1064	176164	338	462	3	50
	580	92	92	5	5	946	2100	800	1100	QJF 264M		342	558	4	123
360	540	82	82	5	5	491	900	1000	1300	QJF1072	176172	382	518	4	71.5
1000	1380	190								QJ6/1000M				393
1060	1500	195								QJ6/1060MA/C9				393