Double Row Deep Groove Ball Bearings

Double row deep groove ball bearings are highly versatile components used in various industrial applications. These bearings consist of two rows of balls separated by a deep groove, allowing them to accommodate higher radial loads and axial loads in both directions. With their unique design, double row deep groove ball bearings provide increased load-carrying capacity and improved rigidity compared to single row bearings. They are commonly used in applications requiring high precision, such as machine tools, industrial gearboxes, and pumps, where reliability and efficient load distribution are paramount.

Technial Specification

Table 1

Bearing Code	Boundary Dimensions				Basic Load Rating		Limiting Speed		Shoulder Dimensions			Mass
	(mm)				(kN)		(rpm)		(mm)			(kg)
									da	Da	ra	Approx
	d	D	B	r	Cr	Cor	Grease	Oil	(min.)	(max.)	(max.)
	d	D	B	(min.)	Cr	Cor	Grease	Oil
4200	10	30	14	0.6	7.7	5.9	15000	20000	14	26	0.6	0.057
4201	12	32	14	0.6	7.75	6.15	14000	18000	16	28	0.6	0.062
4202	15	35	14	0.6	9.75	9	12000	16000	19	31	0.6	0.071
4203	17	40	16	0.6	11.7	10.4	11000	14000	21	36	0.6	0.106
4204	20	47	18	1	16.4	16	9000	12000	25	42	1	0.165
4205	25	52	18	1	16.3	16.9	7500	9900	30	47	1	0.189
4206	30	62	20	1	22	24.7	6400	8500	35	57	1	0.298
4207	35	72	23	1.1	26.4	30.7	5600	7400	41.5	65.5	1	0.46
4208	40	80	23	1.1	33.7	42.4	4700	6300	46.5	73.5	1	0.558
4209	45	85	23	1.1	31.9	43.9	4600	6100	51.5	78.5	1	0.605
4210	50	90	23	1.1	31.4	44.6	4200	5600	56.5	83.5	1	0.651
4211	55	100	25	1.5	37.2	54.1	3800	5000	63	92	1.5	0.882
4212	60	110	28	1.5	47.9	67.6	3500	4700	68	102	1.5	1.2
4213	65	120	31	1.5	54.7	78.5	3200	4300	73	112	1.5	1.59
4214	70	125	31	1.5	62.1	89.8	3100	4100	78	117	1.5	1.68
4215	75	130	31	1.5	61.6	90.7	2900	3900	83	122	1.5	1.77
4302	15	42	17	1	13.1	11.7	11000	14000	20	37	1	0.123
4303	17	47	19	1	16.5	15	9400	13000	22	42	1	0.171
4304	20	52	21	1.1	19.5	17	8300	11000	26.5	45.5	1	0.227
4305	25	62	24	1.1	26.3	25.7	6700	9000	31.5	55.5	1	0.365
4306	30	72	27	1.1	35.5	35.9	5700	7600	36.5	65.5	1	0.542
4307	35	80	31	1.5	40.6	41.8	5200	7000	43	72	1.5	0.752
4308	40	90	33	1.5	46	48.8	4600	6100	48	82	1.5	1.01
4309	45	100	36	1.5	57.6	62.4	4100	5500	53	92	1.5	1.35
4310	50	110	40	2	70.4	77.7	3700	5000	59	101	2	1.8
4311	55	120	43	2	84.2	94.4	3400	4600	64	111	2	2.29
4312	60	130	46	2.1	99.2	113	3100	4200	71	119	2	2.87
4313	65	140	48	2.1	107	124	2900	3900	76	129	2	3.46
4314	70	150	51	2.1	115	136	2700	3600	81	139	2	4.21
4315	75	160	55	2.1	132	158	2500	3400	86	149	2	5.15

Advantages

Increased Load-Carrying Capacity: Double row deep groove ball bearings have two rows of balls, which provide higher load-carrying capacity compared to single row bearings. This enables them to handle higher radial loads and axial loads in both directions, making them suitable for applications with demanding load requirements.
Improved Rigidity: The presence of two rows of balls enhances the rigidity of these bearings. This increased rigidity helps to maintain precise alignment and reduces the risk of deflection or misalignment under heavy loads, ensuring reliable and efficient operation.
Efficient Load Distribution: The deep groove design of these bearings allows for efficient load distribution across the two rows of balls. This helps to minimize localized stress and wear, promoting longer bearing life and reducing the risk of premature failure.
Versatile Applications: Double row deep groove ball bearings find applications in various industries, including machine tools, industrial gearboxes, pumps, and more. Their ability to handle higher loads and provide improved rigidity makes them suitable for precision equipment and machinery where reliability and performance are crucial.
Enhanced Speed Capability: These bearings are designed to operate at higher speeds while maintaining stability. The double row configuration helps to reduce heat generation and friction, enabling them to withstand higher rotational speeds without compromising performance.
Easy Installation and Maintenance: Double row deep groove ball bearings are typically designed for easy installation and maintenance. They are available in various sizes and designs, allowing for flexibility in different applications. Additionally, their standardized dimensions make replacement and interchangeability convenient.