Double Row Angular Contact Ball Bearing – Open Type

Double row angular contact ball bearings, open type, are precision components designed to accommodate high radial and axial loads in a wide range of applications. With two rows of balls arranged at an angle to the bearing axis, these bearings provide increased load-carrying capacity and improved stiffness compared to single row angular contact ball bearings. The open design allows for easy lubrication and maintenance. They are commonly used in industries such as machine tools, mining equipment, and construction machinery, where reliability, load capacity, and rotational precision are crucial.

Technial Specification

Table 1

Bearing Designation	Boundary Dimensions				Basic Load Rating (K N )		Limiting Speed(rpm)		Other dimension		Distance of working points	Shoulder Dimensions (mm)			Mass
Bearing Designation	(mm)				Open type		Grease	Oil	Other dimension		(mm)	Shoulder Dimensions (mm)			(kg)
OPEN	d	D	B	r1、2min	Cr	Cor	Grease	Oil	d1≈	D1≈	a	da(Min.)	Da（MAX.)	ra（MAX.)	Approx
3200A	10	30	14	0.6	7.41	4.3	16000	22000	17.7	23.6	18	15	25	0.6	0.051
3201A	12	32	15.9	0.6	10.1	5.6	15000	20000	19.1	26.5	20	17	27	0.6	0.058
3202A	15	35	15.9	0.6	11.2	6.8	12000	17000	22.1	29.5	22	20	30	0.6	0.066
3203A	17	40	17.5	0.6	14	8.65	10000	15000	25.2	33.6	25	22	35	0.6	0.096
3204A	20	47	20.6	1	18.6	12	9000	13000	29.6	39.5	30	26	41	1	0.16
3205A	25	52	20.6	1	20.3	14	8000	11000	34.6	44.5	33	31	46	1	0.18
3206A	30	62	23.8	1	28.1	20	7000	9500	41.4	53.2	38	36	56	1	0.29
3207A	35	72	27	1.1	37.1	27.5	6000	8000	48.1	61.9	45	42	65	1	0.44
3208A	40	80	30.2	1.1	44.9	33.5	5600	7500	47.8	72.1	49	47	73	1	0.58
3208E	40	80	30.2	1.1	48.4	48	5600	7500	47.8	72.1	49	47	73	1	0.64
3209A	45	85	30.2	1.1	47.5	38	5000	6700	52.8	77.1	52	52	78	1	0.63
3209E	45	85	30.2	1.1	50.1	53	5000	6700	52.8	77.1	52	52	78	1	0.69
3210A	50	90	30.2	1.1	47.5	39	4800	6300	57.8	82.1	56	57	83	1	0.66
3210E	50	90	30.2	1.1	52.8	58.5	4800	6300	57.8	82.1	56	57	83	1	0.74
3211	55	100	33.3	1.5	57.2	67	4300	5600	70.4	88.3	64	64	91	1.5	1.05
3212	60	110	36.5	1.5	72.1	85	3800	5000	78	98.3	71	69	101	1.5	1.4
3213	65	120	38.1	1.5	78.1	95	3600	4800	83.7	105	76	74	111	1.5	1.75
3214	70	125	39.7	1.5	76.5	98	3200	4300	90.6	111	81	79	116	1.5	1.9
3215	75	130	41.3	1.5	84.2	110	3200	4300	94.7	116	84	84	121	1.5	2.1
3216	80	140	44.4	2	101	134	2800	3800	102	127	91	90	130	2	2.65
3217	85	150	49.2	2	110	146	2600	3600	107	133	97	95	140	2	3.4
3218	90	160	52.4	2	128	173	2400	3400	115	143	104	100	150	2	4.15
3219	95	170	55.6	2.1	147	204	2200	3200	124	154	111	107	158	2	5
3220	100	180	60.3	2.1	157	220	2000	3000	129	160	118	112	168	2	6.1
3222	110	200	69.8	2.1	190	270	1900	2800	143	178	132	122	188	2	8.8
3302A	15	42	19	1	15.1	9.15	10000	15000	25.6	34.3	26	21	36	1	0.13
3303A	17	47	22.2	1	21.2	12.5	9500	14000	27.6	38.8	29	23	41	1	0.18
3304A	20	52	22.2	1.1	22.1	14.3	8500	12000	31.8	42.6	32	27	45	1	0.22
3305A	25	62	25.4	1.1	31.2	20.8	7500	10000	38.4	51.4	38	32	55	1	0.35
3306A	30	72	30.2	1.1	41	28.5	6300	8500	39.8	64.1	44	37	65	1	0.53
3306E	30	72	30.2	1.1	45.7	42.5	6300	8500	39.8	64.1	44	37	65	1	0.59
3307A	35	80	34.9	1.5	48.8	34	5600	7500	44.6	70.1	49	44	71	1.5	0.73
3307E	35	80	34.9	1.5	53.9	51	5600	7500	44.6	70.1	49	44	71	1.5	0.79
3308A	40	90	36.5	1.5	59.2	43	5000	6700	50.8	80.1	56	49	81	1.5	0.95
3308E	40	90	36.5	1.5	66	64	5000	6700	50.8	80.1	56	49	81	1.5	1.05
3309	45	100	39.7	1.5	72.1	73.5	4500	6000	63.8	86.3	64	54	91	1.5	1.4
3310	50	110	44.4	2	88	96.5	4000	5300	73.3	97	73	60	100	2	1.95
3311	55	120	49.2	2	95.2	108	3800	5000	81	110	80	65	110	2	2.55
3312	60	130	54	2.1	112	127	3400	4500	87.2	115	86	72	118	2	3.25
3313	65	140	58.7	2.1	128	150	3200	4300	92.5	122	94	77	128	2	4.1
3314	70	150	63.5	2.1	147	173	2800	3800	99.2	131	101	82	138	2	5.05
3315	75	160	68.3	2.1	157	186	2600	3600	106	139	107	87	148	2	6.15
3316	80	170	68.3	2.1	176	212	2400	3400	113	148	112	92	158	2	6.95
3317	85	180	73	3	194	240	2200	3200	120	157	119	99	166	2.5	8.3
3318	90	190	73	3	220	285	2000	3000	128	169	125	104	176	2.5	9.25
3319	95	200	77.8	3	238	315	1900	2800	135	178	133	109	186	2.5	11
3320	100	215	82.6	3	255	355	1800	2600	142	187	139	114	201	2.5	13.5
3322	110	240	92.1	3	292	425	1700	2400	155	205	153	124	226	2.5	19

Advantages

Increased Load-Carrying Capacity: Double row angular contact ball bearings have two rows of balls arranged at an angle, providing higher load-carrying capacity compared to single row bearings. This design enables them to handle both radial and axial loads effectively, making them suitable for applications with heavy loads or combined loads.
Improved Stiffness: The double row configuration of these bearings enhances their stiffness, resulting in improved stability and reduced deflection during operation. This increased rigidity allows for precise and accurate rotational motion, ensuring the desired performance and minimizing any unintended movement.
Versatility in Applications: Double row angular contact ball bearings find applications in various industries, including machine tools, mining equipment, construction machinery, and more. Their ability to handle high loads and provide improved stiffness makes them suitable for demanding applications that require reliable and precise motion control.
Open Design for Easy Lubrication and Maintenance: The open type design of these bearings allows for easy access to lubrication points, facilitating regular maintenance and ensuring proper lubrication to prolong the bearing’s lifespan. This feature also enables easy inspection and cleaning of the bearing assembly.
Higher Speed Capability: Double row angular contact ball bearings are engineered to withstand higher rotational speeds while maintaining stable and reliable operation. Their design minimizes friction and heat generation, allowing for efficient and smooth operation even at elevated speeds.
Durability and Longevity: These bearings are manufactured with high-quality materials and undergo rigorous testing to ensure durability and long-lasting performance. They are designed to withstand challenging operating conditions, including heavy loads, high speeds, and harsh environments, ensuring reliable performance over an extended period.