Name: Double Row Angular Contact Ball Bearings
Rating: 5 (99 reviews)

Double Row Angular Contact Ball Bearings

SYSTEM DESCRIPTION:

Design and Structural Features
The design of this double row angular contact ball bearing series is essentially equivalent to two single-row angular contact ball bearings arranged back-to-back. A key advantage of this design is that it provides a high load-carrying capacity within a significantly narrower width. These bearings are capable of supporting radial loads as well as axial loads in both directions, offering high-rigidity support for mechanical shaft systems.

Flexible Configurations and Specifications

Multiple Sealing Options: To accommodate various environmental protection needs, the product is available in three configurations: Open, Shielded (ZZ) with metal shields, and Sealed (2RS) with rubber seals. Sealed versions are designed to effectively retain lubrication grease and prevent the ingress of external contaminants.
Wide Range of Sizes: A comprehensive selection of metric specifications is available, including the 3200, 3300, 5200, and 5300 series. Bore diameters (d) range from 10mm to 80mm, with individual weights ranging from a lightweight 0.052kg to a robust 4.89kg, satisfying diverse installation requirements from precision instruments to heavy-duty industrial machinery.

Material Options and Corrosion Resistance
Depending on the specific operating environment—such as exposure to moisture, high temperatures, or corrosive agents—several high-performance stainless steel options are available:

AISI 440C: Provides higher resistance to rust and corrosion than standard 52100 chrome bearing steel while maintaining high hardness; note that this material possesses magnetic properties.
AISI 304: A widely used corrosion- and heat-resistant steel that is nonmagnetic, making it suitable for corrosive environments where 440C is not applicable.
AISI 316L: This molybdenum-bearing stainless steel offers superior overall corrosion resistance compared to Grade 304, particularly showing higher resistance to pitting and crevice corrosion in chloride environments.

Brand Packaging and Quality Delivery
All products are delivered in standard NSJ brand packaging. Options include tube packing, single-box independent packaging, or industrial bulk packing to ensure the product remains safe and clean during transport and storage.

TECHNICAL DRAWING:

Angular contact ball bearings have inner and outer ring raceways that are displaced relative to each other in the direction of the bearing axis. This means that these bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.The axial load carrying capacity of angular contact ball bearings increases as the contact angle increases. The contact angle is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane, along which the combined load is transmitted from one raceway to another, and a line perpendicular to the bearing axis.

Metric types			Dimension （mm）				point of space （mm)	Dimensions of installation (mm)				Weight
Metric types			Dimension （mm）				point of space （mm)	da		Da	ra	Weight
Open	Shielded	Sealed	d	D	B	r	(Open) a	(min)	(max)	(min)	(max)	Kg
3200	∕	∕	10	30	14.3	0.6	19.5	14.5	∕	25.5	0.6	0.052
3201	∕	∕	12	32	15.9	0.6	21.7	16.5	∕	27.5	0.6	0.063
3202	∕	∕	15	35	15.9	0.6	23.6	19.5	∕	30.5	0.6	0.072
3302	∕	∕	15	42	19	1	27.6	20.5	∕	36.5	1	0.132
3203	∕	∕	17	40	17.5	0.6	26.6	21.5	∕	35.5	0.6	0.1
5203	5203ZZ	5203 2RS		40	17.5	0.6	20	21.5	23.5	35.5	0.6	0.091
3303	∕	∕		47	22.2	1	31	22.5	∕	41.5	1	0.192
3204	∕	∕	20	47	20.6	1	31.5	25.5	∕	41.5	1	0.17
5204	5204ZZ	5204 2RS		47	20.6	1	23.5	25.5	26.6	41.5	1	0.12
3304	∕	∕		52	22.2	1.1	33.8	27	∕	45	1	0.23
5304	5304ZZ	5304 2RS		52	22.2	1.1	25.9	27	28.3	45	1	0.23
3205	∕	∕	25	52	20.6	1	34.4	30.5	∕	46.5	1	0.19
5205	5205ZZ	5205 ZZ		52	20.6	1	26.1	30.5	32.3	46.5	1	0.19
3305	∕	∕		62	25.4	1.1	40.5	32	∕	55	1	0.369
5305	5305ZZ	5305 2RS		62	25.4	1.1	31.1	32	33.4	55	1	0.34
3206	∕	∕	30	62	23.8	1	40.7	35.5	∕	56.5	1	0.32
5206	5206ZZ	5206 2RS		62	23.8	1	30.8	35.5	38.6	56.5	1	0.29
3306	∕	∕		72	30.2	1.1	47.2	37	∕	65	1	0.585
5306	5306ZZ	5306 2RS		72	30.2	1.1	36.2	37	41.3	65	1	0.51
3207	∕	∕	35	72	27	1.1	46.9	42.5	∕	65	1	0.48
5207	5207ZZ	5207 2RS		72	27	1.1	36.1	42.5	43.9	65	1	0.43
3307	∕	∕		80	34.9	1.5	53.4	43.5	∕	71.5	1.5	0.816
5307	5307ZZ	5307 2RS		80	34.9	1.5	41	43.5	45.5	71.5	1.5	0.79
3208	∕	∕	40	80	30.2	1.1	52.6	47	∕	73	1	0.65
5208	5208ZZ	5208 2RS		80	30.2	1.1	39.2	47	49.5	73	1	0.57
3308	∕	∕		90	36.5	1.5	58.9	48.5	∕	81.5	1.5	1.07
5308	5208ZZ	5208 2RS		90	36.5	1.5	44.9	48.5	52.1	81.5	1.5	1.05
3209	∕	∕	45	85	30.2	1.1	56.3	52	∕	78	1	0.71
5209	5209ZZ	5209 2RS		85	30.2	1.1	42.2	52	55.3	78	1	0.62
3309	∕	∕		100	39.7	1.5	65.6	53.5	∕	91.5	1.5	1.42
5309	5309ZZ	5309 2RS		100	39.7	1.5	51	53.5	58.2	91.5	1.5	1.42
3210	∕	∕	50	90	30.2	1.1	58.8	57	∕	83	1	0.76
5210	5210ZZ	5210 2RS		90	30.2	1.1	44.5	57	58.9	83	1	0.67
3310	∕	∕		110	44.4	2	71.7	60	∕	100	2	1.95
5310	5310ZZ	5310 2RS		110	44.4	2	56.6	60	64.4	100	2	1.93
3211	∕	∕	55	100	33.3	1.5	65	63.5	∕	91.5	1.5	1.05
5211	5211ZZ	5211 2RS		100	33.3	1.5	50.2	63.5	66.2	91.5	1.5	0.96
3311	∕	∕		120	49.2	2	79.3	65	∕	110	2	2.53
5311	5311ZZ	5311 2RS		120	49.2	2	61.6	65	71.8	110	2	2.3
3213	∕	∕	60	110	36.5	1.5	71.3	68.5	∕	101.5	1.5	1.4
5212	5212ZZ	5212 2RS		110	36.5	1.5	53.8	68.5	74.1	101.5	1.5	1.36
3312	∕	∕		130	54	2.1	87.4	72	∕	118	2	3.24
5312	5312ZZ	5312 2RS		130	54	2.1	67.2	72	79.2	118	2	3.16
3213	∕	∕	65	120	38.1	1.5	76.8	73.5	∕	111.5	1.5	1.75
5213	5213ZZ	5213 2RS		120	38.1	1.5	58.8	73.5	79	111.5	1.5	1.66
3313	∕	∕		140	58.7	2.1	92.7	77	∕	128	2	4.08
5313	5313ZZ	5313 2RS		140	58.7	2.1	70.9	77	85.9	128	2	3.91
3214	∕	∕	70	125	39.7	1.5	80.7	78.5	∕	116.5	1.5	1.92
5214	5214ZZ	5214 2RS		125	39.7	1.5	61.4	78.5	83.5	116.5	1.5	1.81
3314	∕	∕		150	63.5	2.1	99.7	82	∕	138	2	5.04
5314	5314ZZ	5314 2RS		150	63.5	2.1	76	82	92.9	138	2	4.89
3215	∕	∕	75	130	41.3	1.5	84.7	83.5	∕	121.5	1.5	2.1
3216	∕	∕	80	140	44.4	2	90.7	90	∕	130	2	2.64

Company Profile

Ningbo Sanya Bearing Co., Ltd. is a professional China Double Row Angular Contact Ball Bearings Manufacturers and Double Row Angular Contact Ball Bearings Factory.We established in 1994 stands right at the prime location of the Yangtze River Delta. Specialized in the production of high-quality deep groove ball bearings and insert bearings. It has emerged as a modern company integrating product development, design, manufacturing, sales and service. It can produce bearings with an inner diameter of 3mm to 100mm and customize various non-standard Custom Series 6000 Two Contact Seals Deep Groove Ball Bearing with highly-automated equipment, stable quality, and complete testing methods ensuring the quality of its products. With the vigorous development of the foreign trade department, our business in bearing production and sales in 2018 far exceeded 20 million US dollars, and the products were sold in more than 50 countries and regions.

The company has established a modernized enterprise management system, pooling talents in various fields to make the company more humane, informatized and international with the ISO9001 quality management system being introduced to the production process to enhance its competitiveness. In 2017, the ISO/TS16949 quality management system was also introduced to seek further development in richer application field.

Taking "integrity; service; cooperation; win-win " as the core values, and "customer, order primacy" as its working philosophy, adhering to the vision of becoming China's bearing supplier, while satisfying the customers and helping employees achieve their dreams, it is constantly heading towards the goal of "get the world move with Chinese Bearings ".