Spherical Roller Bearings

Spherical roller bearings (SRB’s) are considered to be the workhorse of industrial bearings and find wide use in industry due to their incredible load-carrying capabilities.

SRB’s have 2 inclined rows of rollers running on a common spherical raceway in the outer ring. This geometry offers very high axial and radial load-carrying capability in a self-aligning format, allowing dynamic misalignments in the order of 1 to 2.5 degrees.

Features of SRBs include the following:

Steel, brass or polyamide cage designs
Parallel or tapered bore
Sealed and even split designs are available
Normal operating temperature limit of 120°C, with heat-stabilised bearings for higher-temperature applications

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Product Overview

Perfect for applications that bare very heavy radial and axial loads that are prone to misalignment and shaft deflection. Spherical roller bearings boast a low maintenance cost and long service life.

Available in both open and sealed designs with plastic, steel & brass cages. Spherical roller bearings can be found in a variety of applications that contend with continuous vibrations and high speeds.

Stocked in standard industrial sizes as well as special designs for shaker screen and vibratory applications

What are the Typical Uses for Spherical Roller Bearings?

Wind turbine
Continuous casters
Industrial generators
Extruders
Granulators

Dimensions

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The table below indicates popular sizes with their typical load capacity, speed ratings and geometrical constants required for calculation. It is neither definitive nor all encompassing. Variations between manufacturers and differing designs exist.

Spherical roller bearings are usually catalogued to 1400mm bore.

NBC technical staff will gladly assist with calculation, selection. mounting and lubrication advice for specific applications. Ask for advice!

The table below lists the popular sizes, dynamic and static capacity figures as we as limiting speeds for a broad range of SRB’s. These figures can vary between manufacturers.

	Bore	OD	Width	Dynamic	Static	Limiting speed		Weight	Calculation factors
	d	D	B	Cr	Cor	Grease	Oil	Weight	Calculation factors
	mm	mm	mm	KN	KN	rpm	rpm	kg	e	Y₁	Y₂	Y₀
22205	25	52	18	42.1	43.5	8100	11000	0.186	0.35	1.92	2.86	1.88
21305	25	62	17	44.9	43.7	5600	7400	0.267	0.30	2.26	3.37	2.21
22206	30	62	20	51.7	55	6800	9100	0.294	0.33	2.03	3.02	1.98
21306	30	72	19	58.3	60	4700	6300	0.406	0.28	2.37	3.53	2.32
22207	35	72	23	67	73.9	5900	7800	0.447	0.33	2.03	3.20	1.98
21307	35	80	21	70.7	73.3	4200	5600	0.547	0.28	2.40	3.58	2.35
22208	40	80	23	76.9	85	5200	6900	0.536	0.29	2.35	3.50	2.30
21308		90	23	87.6	92	3700	5000	0.751	0.27	2.49	3.70	2.43
22308		90	33	115	127	4000	5300	1.03	0.39	1.75	2.61	1.71
22209	45	85	23	80.5	91.9	4900	6500	0.597	0.27	2.50	3.72	2.44
21309		100	25	105	112	3300	4400	1.01	0.26	2.55	3.80	2.50
22309		100	36	146	168	3600	4800	1.43	0.39	1.71	2.54	1.67
22210	50	90	23	83.1	97.8	4500	6000	0.641	0.25	2.71	4.04	2.65
21310		110	27	121	129	3000	4000	1.3	0.26	2.61	3.88	2.55
22310		110	40	181	208	3200	4300	1.87	0.38	1.78	2.65	1.74
22211	55	100	25	102	119	4100	5400	0.849	0.26	2.64	3.93	2.58
21311		120	29	141	152	2800	3700	1.66	0.25	2.65	3.95	2.59
22311		120	43	213	248	3000	3900	2.43	0.37	1.80	2.69	1.76
22212	60	110	28	127	154	3700	4900	1.2	0.25	2.71	4.04	2.65
21312		130	31	165	175	2500	3400	1.99	0.26	2.64	3.93	2.58
22312		130	46	243	284	2700	3600	3.01	0.37	1.80	2.69	1.76
22213	65	120	31	151	188	3400	4600	1.61	0.27	2.49	3.71	2.43
21313		140	33	186	197	2300	3100	2.45	0.25	2.69	4.00	2.63
22313		140	48	251	291	2500	3400	3.53	0.35	1.92	2.86	1.88
22214	70	125	31	155	193	3200	4300	1.68	0.24	2.83	4.21	2.77
21314		150	35	206	223	2200	2900	2.98	0.25	2.74	4.08	2.68
22314		150	51	300	362	2400	3100	4.37	0.35	1.95	2.91	1.91
22215	75	130	31	161	204	3100	4100	1.77	0.25	2.74	4.08	2.68
21315		160	37	249	270	2100	2700	3.63	0.24	2.84	4.23	2.78
22315		160	55	351	437	2200	2900	5.5	0.36	1.87	2.79	1.83
22216	80	140	33	174	225	2900	3800	2.2	0.22	3.01	4.48	2.94
21316		170	39	272	306	1900	2600	4.29	0.24	2.84	4.23	2.78
22316		170	58	395	496	2100	2800	6.54	0.36	1.87	2.79	1.83
22217	85	150	36	216	277	2700	3600	2.73	0.23	2.95	4.40	2.89
21317		180	41	297	351	1800	2400	5.19	0.24	2.79	4.15	2.73
22317		180	60	431	539	2000	2600	7.42	0.34	2.01	3.00	1.97
22218	90	160	40	252	332	2500	3300	3.47	0.23	2.90	4.31	2.83
23218		160	52.4	316	453	1600	2200	4.64	0.33	2.07	3.09	2.03
21318		190	43	320	387	1700	2300	6.09	0.24	2.84	4.23	2.78
22318		190	64	486	623	1900	2500	8.87	0.34	1.98	2.94	1.93
22219	95	170	43	273	359	2400	3200	4.32	0.26	2.64	3.93	2.59
21319		200	45	351	444	1700	2200	7.09	0.23	2.90	4.30	2.80
22319		200	67	534	686	1800	2300	10.4	0.35	1.92	2.86	1.88
24020	100	150	50	242	425	1500	2000	3.15	0.30	2.23	3.32	2.18
24120		165	65	389	632	1300	1700	5.54	0.38	1.77	2.64	1.73
23120		165	52	326	490	1700	2200	4.39	0.31	2.21	3.29	2.16
22220		180	46	317	423	2200	3000	5.1	0.26	2.55	3.80	2.50
23220		180	60.3	405	589	1500	1900	6.81	0.33	2.03	3.02	1.98
21320		215	47	382	446	1600	2000	8.44	0.22	3.00	4.50	3.00
22320		215	73	613	799	1600	2200	13.3	0.35	1.91	2.85	1.87

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Downloads

NTN SNR - Spherical Roller Bearings

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For any enquiries regarding Spherical Roller Bearings, please complete our enquiry form, and a member of our technical team will respond promptly. Alternatively, you can reach out directly to one of our offices using the contact details here. Our specialists are ready to provide guidance and support tailored to your machinery and engineering needs.