Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of deep groove ball bearing 61902-2rs 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 Bearings 61902-2RS 6902-2RS
Specifications
|
Bearing Type: |
Ball bearing 61902-2RS 6902-2RS |
|
|
Dimensions (dxDxB): |
15*28*7mm | |
|
Material: |
Chrome steel GCr15, SAE52100, SUJ2 | |
|
Seals: |
Rubber seals on both side | |
|
Retainer: |
Steel |
|
|
Grease: |
Normal grease |
|
| Speed: | 13,000 rpm with grease, 15000 rpm with oil | |
|
Radial Internal clearance: |
C0/C3/C4 |
|
|
Vibration: |
ZV1, ZV2, ZV3, ZV4 | |
|
Precision: |
Standard Precision P0, P6, P5 | |
| Lubrication: | Standard Lubrication | |
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Heat Stabilization: |
Temperatures from -20°C up to 120 °C | |
| Special Treatment: | No Special Treatment | |
|
Brand: |
HXB or OEM brand |
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|
Also know as: |
6902-2RS1, 6902LLU |
|
Bearing Number |
Boundary Dimensions (mm) |
Load Rating (KN) |
Limiting Speed (rpm) |
Weight (kg) |
|||||
|
d |
D |
B |
rmin |
Cr |
Cor |
Grease |
Oil |
||
|
6800 |
10 |
19 |
5 |
0.3 |
1.83 |
0.925 |
32000 |
38000 |
0.005 |
|
6900 |
22 |
6 |
0.3 |
2.70 |
1.27 |
30000 |
36000 |
0.011 |
|
|
6801 |
12 |
21 |
5 |
0.3 |
1.92 |
1.04 |
29000 |
35000 |
0.007 |
|
6901 |
24 |
6 |
0.3 |
2.89 |
1.46 |
27000 |
32000 |
0.013 |
|
|
6802 |
15 |
24 |
5 |
0.3 |
2.08 |
1.26 |
26000 |
31000 |
0.008 |
|
6902 |
28 |
7 |
0.3 |
4.10 |
2.06 |
24000 |
28000 |
0.018 |
|
|
6803 |
17 |
26 |
5 |
0.3 |
2.81 |
1.72 |
24000 |
28000 |
0.008 |
|
6903 |
30 |
7 |
0.3 |
4.65 |
2.58 |
22000 |
26000 |
0.002 |
|
|
6804 |
20 |
32 |
7 |
0.3 |
4.00 |
2.47 |
21000 |
25000 |
0.020 |
|
6904 |
37 |
9 |
0.3 |
6.40 |
3.70 |
19000 |
23000 |
0.040 |
|
|
6805 |
25 |
37 |
7 |
0.3 |
4.30 |
2.95 |
18000 |
21000 |
0.022 |
|
6905 |
42 |
9 |
0.3 |
7.05 |
4.55 |
16000 |
19000 |
0.050 |
|
|
6806 |
30 |
42 |
7 |
0.3 |
4.70 |
3.65 |
15000 |
18000 |
0.110 |
|
6906 |
47 |
9 |
0.3 |
7.25 |
5.00 |
14000 |
17000 |
0.200 |
|
The 619 series belongs to ultra-thin section deep groove ball bearings, featuring an extremely slim outer ring and inner ring structure with a much narrower width and lighter weight compared with standard 6000, 6200 and 6300 series bearings of the same bore size. Different from standard series that prioritize load capacity and impact resistance, the 619 series is specially optimized for space-saving, lightweight and low-profile installation, forming a unique performance positioning in the deep groove ball bearing family.
In contrast, the 619 series sacrifices partial heavy-load performance to achieve minimum radial occupation space, making it irreplaceable in limited-installation scenarios. It retains the basic advantages of deep groove ball bearings, including bidirectional axial load capacity, low noise and smooth high-speed operation, while presenting more flexible and slender structural characteristics.
Its thin-wall design effectively reduces the overall weight of mechanical equipment and lowers rotational inertia, which helps improve equipment operating efficiency and response sensitivity. Available in open, shielded and sealed types, the series can adapt to different lubrication and environmental protection requirements.
Applications
Thanks to its ultra-thin and lightweight advantages, the 619 series thin-section bearings are exclusively applied to precision light-load equipment with strict space limitations, which cannot be replaced by bulky 6000, 6200 and 6300 standard bearings. It is widely used in fields requiring slim structure, high precision and low inertia operation.
Typical application scenarios cover precision automation equipment, 3C electronic processing machinery, miniature precision motors, industrial robotic joint shafts, optical instruments, medical equipment, precision instrumentation and lightweight transmission mechanisms. In these scenarios, the installation space is extremely compact, and the equipment does not require heavy-load bearing capacity, but demands high rotational precision, low vibration and lightweight structure. Standard 6000/6200/6300 series bearings are too thick and heavy to meet assembly requirements, while 619 series thin-wall bearings perfectly solve the conflict between precision rotation and limited installation space.
In summary, 619 series serves light-load, high-precision, space-restricted scenarios, while 6000/6200/6300 series dominate conventional and medium-heavy load general mechanical scenarios, forming a clear and complementary product application system.
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.
After more than 20 years of development, HXB's main products involves deep groove ball bearings, angular contact ball bearings, high precision spindle bearings, etc. Our bearings are wildly used in electric motors, machinery tool spindle, CNC, NEVs and other fields.
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
Application fields: electric motors, pumps, textile machine, household appliance, machine tool spindle, CNC machine, healthcare industry, intelligence manufacturing etc.
Advantages
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)
- Annual Capacity: 3 million sets of precision bearings in a lean & intelligent factory
- Equipment Investment: Over RMB 3 million in world-leading precision testing instruments
- Digital Transformation: with full deployment of MESYS bearing design platform, ERP, MES, WMS, SPC real-time quality monitoring and OA systems, building a benchmark smart manufacturing plant.
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: Why choose 619 series instead of 6000/6200/6300 series?
A1: Customers should choose 619 series when the equipment has strict limitations on installation space and overall weight. Standard 6000/6200/6300 bearings are too bulky to be assembled in slim, compact mechanical structures. The 619 series perfectly solves the space occupation problem while maintaining high rotational accuracy and stable high-speed operation, which cannot be replaced by any standard thick-section bearings.
Q2: What application scenarios are exclusive for 619 series, and not suitable for standard series?
A2: 619 series is uniquely applied to high-precision, light-load, space-constrained slim equipment, including 3C precision equipment, robotic joints, optical instruments, medical devices, miniature precision motors and precision instrumentation. These scenarios do not require heavy load capacity, but pursue ultra-light weight, low inertia and compact structure. Standard 6000/6200/6300 series are more suitable for conventional industrial machinery, fans, pumps and general transmission equipment with sufficient installation space and medium-heavy load demands.
Q3: Does the thin-wall design of 619 series bring any usage limitations compared with standard series?
A3: Yes. Due to the ultra-thin wall structure, the 619 series has lower rigidity and load-bearing limit than 6000, 6200 and 6300 series. It is not suitable for working conditions with heavy load, vibration impact and long-term high-load operation. It is a professional precision bearing for light-load and high-precision scenarios, while standard series are designed for universal and heavy-duty industrial applications.
Q4: What are the key usage limitations and forbidden working conditions for 619 series thin-section bearings?
A4: The 619 series features a slim thin-wall structure, which comes with specific application limitations for professional scenario matching. This bearing is designed for continuous, stable, and light-load operation. It cannot withstand sudden shock loads, heavy radial pressure, or long-term overloaded operation. Additionally, it is not applicable for equipment with severe mechanical vibration, alternating impact force, or high-torque operating conditions. To ensure stable precision and long service life, 619 series bearings must be used in well-calibrated, steady, and clean light-duty precision systems, avoiding any overloading or impact working environments.
Q5: Are there any differences in speed and precision performance between 619 series and standard series?
A5: The 619 series has better high-speed stability and lower rotational inertia. Its slender structure reduces operating friction and equipment operating weight, delivering more sensitive operation response and lower noise. Compared with standard bearings that focus on load resistance, 619 series is more prominent in precision rotation and high-speed lightweight operation, meeting the high-precision operation requirements of sophisticated equipment.
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