Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of deep groove ball bearing 6204zz in China. As we have world-leading production equipment and strong manufacturing capabilities, we warmly welcome you to buy bulk high quality bearings at competitive price from our factory.

Single Row Deep Groove Ball Bearing 6204-ZZ

Specifications

Bearing Type:	Radial ball bearing 6204-ZZ for electric motor
Dimensions (dxDxB):	204712mm (6204)
Material:	Chrome steel GCr15, SAE52100, SUJ2
Seals:	Metal shield on both side
Retainer:	Steel
Grease:	Normal grease
Speed:	16,000 rpm with grease, 18000 rpm with oil
Radial Internal clearance:	C0/C3/C4
Vibration:	ZV1, ZV2, ZV3, ZV4
Precision:	Standard Precision P0, P6, P5
Lubrication:	Standard Lubrication
Heat Stabilization:	Temperatures from -20°C up to 120 °C
Special Treatment:	No Special Treatment
Brand:	HXB or OEM brand
Also know as:	6204ZZ, 6204-2Z

Noise testing standard

Bearing Diameter	SO901-1(dB)
	Z1	Z2	Z3	Z4
㎜	≤	≤	≤	≤
3	34	32	28	23
4	34	32	28	23
5	36	34	30	25
6	36	34	30	25
7	38	35	31	26
8	38	35	31	26
9	40	36	32	27
10	42	38	33	28
12	43	39	34	29
15	44	40	35	30
17	44	40	35	30
20	45	41	36	31
25	46	42	38	33
30	47	43	39	35
35	49	45	41	36
40	51	46	42	38

Vibration Limits for Deep Groove Ball Bearings (Bore Diameter 3mm–60mm)

Bore Diameter d (mm)	V3 (Vibration Velocity, μm/s)												V4 (Vibration Acceleration Peak, μm/s)
	Z1			Z2			Z3			Z4			Z1			Z2			Z3			Z4
	Low Freq	Mid Freq	High Freq	Low Freq	Mid Freq	High Freq	Low Freq	Mid Freq	High Freq	Low Freq	Mid Freq	High Freq	Low Freq	Mid Freq	High Freq	Low Freq	Mid Freq	High Freq	Low Freq	Mid Freq	High Freq	Low Freq	Mid Freq	High Freq
3	80	44	44	60	35	32	48	26	22	31	15	10	28	15	10	10	10	100	60	60	90	45	45	45
4	110	70	60	80	48	48	60	32	30	35	18	12	32	18	12	11	11	115	85	85	100	50	50	50
5	110	70	74	80	48	48	60	36	30	35	21	18	32	18	12	11	11	115	85	70	100	50	50	50
6	96	96	92	68	54	54	58	36	44	25	18	32	38	12	12	145	95	90	120	55	55	55
7	130	90	80	90	66	54	72	48	40	44	28	24	38	12	12	145	115	95	120	55	55	55
8	130	96	92	90	72	48	72	48	44	24	38	12	12	145	115	95	120	65	65	70
9	160	120	80	90	70	50	50	35	30	45	14	18	150	120	95	130	65	65	70
10	160	120	100	85	70	60	60	50	35	30	52	18	18	180	140	105	85	85	70
12	210	150	120	150	110	85	85	65	55	40	55	25	25	215	180	140	110	115	115
17	210	150	150	150	100	90	90	75	60	45	58	25	25	215	180	140	105	115	115
20	260	190	180	125	100	100	75	60	60	45	60	32	28	285	215	215	145	155
25	260	190	150	125	100	100	75	60	60	45	60	32	28	285	215	215	145	155
28	290	150	180	125	130	90	75	60	65	35	40	235	215	170	190
30	300	240	190	150	150	130	100	90	75	60	70	35	40	360	290	250	170	190
32	300	240	190	150	150	130	100	90	75	60	70	35	40	360	290	250	170	215
35	360	260	200	180	160	150	110	100	90	75	85	42	50	400	330	280	200	240
40	360	260	200	180	160	150	110	100	90	75	85	42	50	400	330	280	200	240
45	420	330	240	200	180	160	125	110	100	82	95	70	60	480	430	340	335	335
50	420	330	240	200	180	160	125	110	100	82	95	70	60	480	430	340	335	335
55	480	360	330	220	240	210	180	200	145	110	110	93	70	520	530	625	360	385
60	560	440	320	240	240	200	180	200	145	110	110	100	80	520	530	625	360	385

Features

Precision & Smooth Operation

Standard ISO P0 dimensional tolerance, consistent rotational smoothness for regular motor operation

Uniformly ground raceways and graded steel balls to reduce running vibration and operating noise

Optimized radial internal clearance (C2/C3) to accommodate thermal expansion of motor shafts

Heat & Wear Resistance

High-hardness GCr15 bearing steel with through-hardening treatment for long fatigue service life

Multipurpose lithium base grease with wide temperature adaptability for continuous motor running

Low-friction stamped steel cages to minimize heat buildup under medium rotating speeds

Dust & Moisture Protection

ZZ metal double shields for dry, dust-laden industrial environments

2RS rubber contact seals for workshops with humidity, mist and fine particles

Tight seal lip design to prevent grease leakage and block external contaminants

Anti-Electric Corrosion Optional

Custom insulated coating on outer ring to mitigate electric pitting in VFD variable frequency motors

Low-conductivity grease additive reduces stray current damage to rolling contact surfaces

Assembly & Cost Advantages

Universal standard metric sizes, fully compatible with most general motor shaft and housing bores

Single-row compact structure, easy press-fit installation without complex preload adjustment

Cost-effective mass production design suitable for mass assembly of standard motors

Applications

Deep groove ball bearings 6204ZZ are widely used in general mechanical equipment from Electric Motors to Washing machines, Belt Drives, Compressors, Pumps, Turbines, Printing And Textile Machines, Automotive, Conveyors, Light-duty Industrial Applications, Engines, Small Spindles, Food processing, Power Transmission.

HXB Introduction

Established in 1995, as a leading ball bearing manufacturer in China, HXB offers more than 1,000 kinds of ball bearing to fulfill our customers' needs. With excellent production team and technical team, we can supply high quality products consistently.

Our production capacity:

Deep groove ball bearings: 34 production lines, 30,000,000pcs per year
Angular contact ball bearings: 14 production lines, 3,000,000pcs per year

Advantages

∗ 30 years of dedicated development

HXB was founded in 1995, with nearly 30 years of dedicated development, HXB now operates6 subsidiaries.

∗ 2 high-tech R&D centers

∗ 2 modern manufacturing factories - Hangzhou Yijia Precision Bearing Co., Ltd. and Zhejiang Ruiyang Bearing Technology Co., Ltd.

∗ Supported by advanced digital MES and SPC management systems

∗ IATF16949:2016, ISO9001:2015 and ISO14001 certifications

∗ High-end equipment and high-quality material

About HXB

1. Hangzhou Factory - YJB

Founded in June 2007, YJB is located in Hangzhou. As a subsidiary of HXB Group, we are a national high-tech enterprise and provincial science & technology enterprise specializing in R&D and manufacturing of high-precision, high-speed, advanced, special and professional bearings.

Core Capabilities & Intelligent Manufacturing

Product Size: Inner diameter Φ3–Φ300mm
Precision Classes: P2, P4 (ultra-precision grades)

Main Products

Precision Spindle Bearings
Angular Contact Ball Bearings

Servo Motor Bearings
Vacuum Pump Bearings
Ball Screw Support Bearings

2. Huzhou Factory

In 2021, the deep groove ball bearing factory relocated from Hangzhou to Huzhou. It operate in a 10,000㎡ production facility with a team of 75 employees, focused on the R&D, and manufacturing of high-performance deep groove ball bearings.

We maintain a professional engineering and quality system to ensure stable precision and reliability.

Engineering Team: 4 bearing design & process engineers, accounting for 5% of staff.

Quality Team: 15 quality personnel, including 2 quality engineers, 20% of staff, covering incoming inspection, in-process control and final testing.

Product Range

Series: 6000–6024, 6200–6214, 6300–6314, 6800–6824, 6900–6924

Features: High rigidity, low noise; suitable for grease lubrication or oil-mist lubrication.

6 Series X4YA-2RS (Double-lip seal) & APT Retainer Series

Features: High & low temperature resistance, superior sealing, high load capacity, long service life.

Application: New energy vehicle transmission systems.

Certificates

Exhibition

FAQ

Q1: What makes EMQ bearings longer lasting?

1. Ultra-low friction finishing reduces wear and heat, slowing grease aging;

2. High-precision component consistency ensures even force distribution;

3. Special motor grease provides excellent oxidation and high-temperature resistance;

4. Strict clean production prevents internal impurities and pitting failure.

Q2: Service life improvement compared with ordinary bearings?

Under standard industrial motor operating conditions, EMQ bearings achieve 30%–50% longer service life and lower failure rates, greatly reducing motor maintenance and replacement costs.

Q3: Are EMQ bearings high-temperature resistant?

Yes. Equipped with wide-temperature long-life grease, EMQ bearings resist oxidation and grease failure under continuous motor temperature rise, maintaining stable low-friction operation for long-term running.

Q4: What motors suit EMQ bearings?

1. YE2/YE3 standard asynchronous motors;

2. YVF VFD variable-frequency motors;

3. 24/7 continuous-running fan, pump and conveyor motors;

4. Low-noise automated industrial motors;

5. Mass-production motors requiring low failure rate.

Q5: ZZ vs 2RS, how to choose?

EMQ-ZZ: Dry, clean indoor environments, fan motors, high-speed light-load use (low friction, low heat);

EMQ-2RS: Humid, dusty, outdoor and pump equipment (excellent dustproof and waterproof sealing).

Bearing Number	Boundary Dimensions (mm)				Load Rating (KN)		Limiting Speed (rpm)		Weight (kg)
Bearing Number	d	D	B	rmin	Cr	Cor	Grease	Oil	Weight (kg)
6000	10	26	8	0.3	4.55	1.96	29000	34000	0.019
6200		30	9	0.6	5.10	2.39	25000	30000	0.032
6300		35	11	0.6	8.20	3.50	23000	27000	0.052
6001	12	28	8	0.3	5.10	2.39	26000	30000	0.022
6201		32	10	0.6	6.10	2.75	22000	26000	0.035
6301		37	12	1.0	9.70	4.20	20000	24000	0.051
6002	15	32	9	0.3	5.60	2.84	22000	26000	0.031
6202		35	11	0.6	7.75	3.60	19000	23000	0.045
6302		42	13	1.0	11.40	5.45	17000	21000	0.080
6003	17	35	10	0.3	6.80	3.35	20000	24000	0.040
6203		40	12	0.6	9.60	4.60	18000	21000	0.064
6303		47	14	1.0	13.50	6.55	16000	19000	0.109
6004	20	42	12	0.6	9.40	5.05	18000	21000	0.068
6204		47	14	1.0	12.80	6.65	16000	18000	0.103
6304		52	15	1.1	15.90	7.90	14000	17000	0.142
6005	25	47	12	0.6	10.10	5.85	15000	18000	0.078
6205		52	15	1.0	14.00	7.85	13000	15000	0.127
6305		62	17	1.1	21.20	10.90	12000	14000	0.219
6006	30	55	13	1.0	13.20	8.30	13000	15000	0.110
6206		62	16	1.0	19.50	11.30	11000	13000	0.200
6306		72	19	1.1	26.70	15.00	10000	12000	0.349
6007	35	62	14	1.0	16.00	10.30	12000	14000	0.148
6207		72	17	1.1	25.70	15.30	9800	11000	0.288
6307		80	21	1.5	33.50	19.10	8800	10000	0.455
6008	40	68	15	1.0	16.80	11.50	10000	12000	0.185
6208		80	18	1.1	29.10	17.80	8700	10000	0.368
6308		90	23	1.5	40.50	24.00	7800	92000	0.639
6009	45	75	16	1.0	21.00	15.10	9200	11000	0.230
6209		85	19	1.1	32.50	20.40	7800	9200	0.414
6309		100	25	1.5	53.00	32.00	7000	8200	0.837
6010	50	80	16	1.0	21.80	16.60	8400	9800	0.258
6210		90	20	1.1	35.00	23.20	7100	8300	0.463
6310		110	27	2.0	62.00	38.50	6400	7500	1.082
6011	55	90	18	1.1	28.30	21.20	7700	9000	0.383
6211		100	21	1.5	43.50	29.20	6400	7600	0.603
6311		120	29	2.0	71.50	45.00	5800	6800	1.355
6012	60	95	18	1.1	29.50	23.20	7000	8300	0.391
6212		110	22	1.5	52.50	36.00	6000	7000	0.780
6312		130	31	2.1	82.00	52.00	5400	6300	1.710
6013	65	100	18	1.1	30.5	25.2	6500	7700	0.41
6213		120	23	1.5	57.5	40	5500	6500	0.957
6313		140	33	2.1	92.5	60	4900	5800	2.1