Double Row Angular contact ball bearing – shields type ZZ

Double row angular contact ball bearings with shields, specifically the ZZ type, are high-performance components designed for applications requiring high radial and axial loads with additional protection against contamination. The ZZ shielding design incorporates metal shields on both sides of the bearing, providing a physical barrier against dust, debris, and other contaminants. These bearings offer reliable performance, enhanced durability, and extended service life, making them suitable for industries such as automotive, industrial machinery, and construction equipment.

Technial Specification

Table 1

Bearing Designation	Boundary Dimensions				Basic Load Rating		Limiting Speed	Other dimension		Distance of working points	Shoulder Dimensions (mm)				Mass
Bearing Designation	(mm)				( KN )		(rpm)	Other dimension		(mm)	Shoulder Dimensions (mm)				(kg)
ZZ	d	D	B	r1、2min	Cr	Cor	(rpm)	d1≈	D1≈	a	da(Min.)	da(Max)	Da(Max)	ra(Max)	Approx
3200A-ZZ	10	30	14	0.6	7.41	4.3	16000	17.7	25	18	15		25	0.6	0.051
3201A-ZZ	12	32	15.9	0.6	10.1	5.6	15000	19.1	27.7	20	17	0	27.7	0.6	0.058
3202A-ZZ	15	35	15.9	0.6	11.2	6.8	12000	22.1	30.7	22	20	0	30.7	0.6	0.066
3203A-ZZ	17	40	17.5	0.6	14	8.65	10000	25.2	35	25	22	0	35	0.6	0.096
3204A-ZZ	20	47	20.6	1	18.6	12	9000	29.6	40.9	30	26	0	41	1	0.16
3205A-ZZ	25	52	20.6	1	20.3	14	8000	34.6	45.9	33	31	0	46	1	0.18
3206A-ZZ	30	62	23.8	1	28.1	20	7000	41.4	55.2	38	36	0	56	1	0.29
3207A-ZZ	35	72	27	1.1	37.1	27.5	6000	48.1	63.9	45	42	0	65	1	0.44
3208A-ZZ	40	80	30.2	1.1	44.9	33.5	5600	47.8	72.1	49	47	47.5	73	1	0.58
3208E-ZZ	40	80	30.2	1.1	48.4	48	5600	47.8	72.1	49	47	47.5	73	1	0.64
3209A-ZZ	45	85	30.2	1.1	47.5	38	5000	52.8	77.1	52	52	52.5	78	1	0.63
3209E-ZZ	45	85	30.2	1.1	50.1	53	5000	52.8	77.1	52	52	52.5	78	1	0.69
3210A-ZZ	50	90	30.2	1.1	47.5	39	4800	57.8	82.1	56	57	57.5	83	1	0.66
3210E-ZZ	50	90	30.2	1.1	52.8	58.5	4800	57.8	82.1	56	57	57.5	83	1	0.74
3302A-ZZ	15	42	19	1	15.1	9.15	10000	25.6	35.7	26	21	0	36	1	0.13
3303A-ZZ	17	47	22.2	1	21.2	12.5	9500	27.6	40.2	29	23	0	41	1	0.18
3304A-ZZ	20	52	22.2	1.1	22.1	14.3	8500	31.8	44	32	27	0	45	1	0.22
3305A-ZZ	25	62	25.4	1.1	31.2	20.8	7500	38.4	53.4	38	32	0	55	1	0.35
3306A-ZZ	30	72	30.2	1.1	41	28.5	6300	39..8	64.1	44	37	39.5	65	1	0.53
3306E-ZZ	30	72	30.2	1.1	45.7	42.5	6300	39.8	64.1	44	37	39.5	65	1	0.59
3307A-ZZ	35	80	34.9	1.5	48.8	34	5600	44.6	70.1	49	44	44.5	71	1.5	0.73
3307E-ZZ	35	80	34.9	1.5	53.9	51	5600	44.6	70.1	49	44	44.5	71	1.5	0.79
3308A-ZZ	40	90	36.5	1.5	59.2	43	5000	50.8	80.1	56	49	50.5	81	1.5	0.95
3308E-ZZ	40	90	36.5	1.5	66	64	5000	50.8	80.1	56	49	50.5	81	1.5	1.05

Advantages

Contamination Protection: The ZZ shielding design features metal shields on both sides of the bearing, acting as a physical barrier against contaminants such as dust, debris, and moisture. These shields help to prevent the entry of harmful particles into the bearing, ensuring reliable performance and reducing the risk of premature failure.
Reliable Performance: Double row angular contact ball bearings with ZZ shields are designed to handle high radial and axial loads. They provide excellent load-carrying capacity and can accommodate both radial and axial forces simultaneously. This makes them suitable for applications where reliable performance and durability are crucial, such as automotive drivetrains, industrial machinery, and construction equipment.
Enhanced Durability: The ZZ shields provide an additional layer of protection for the bearing, helping to retain lubrication and keep contaminants out. This improves the bearing’s overall durability, reduces friction, and minimizes wear and tear, resulting in extended service life and reduced maintenance requirements.
Versatility: Double row angular contact ball bearings with ZZ shields are versatile components that can be used in a wide range of applications. Their ability to handle both radial and axial loads, combined with effective shielding, makes them suitable for various industries, including automotive, industrial machinery, and construction.
Reduced Downtime: The ZZ shielding design helps to minimize the risk of bearing failure caused by contamination. By preventing the entry of dust, debris, and moisture, these bearings can operate for longer periods without requiring frequent cleaning or maintenance. This contributes to reduced downtime and increased productivity in demanding applications.
Cost-Effectiveness: Double row angular contact ball bearings with ZZ shields provide cost-effective solutions without compromising on performance or reliability. They offer a balance between durability, protection against contamination, and affordability, making them a preferred choice in industries where cost considerations are important.