Deep Groove Ball Bearings 61904-2Z

Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of deep groove ball bearings 61904-2z 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 61904-2Z 6904-ZZ

The 6904ZZ is a high-precision thin-section deep groove ball bearing designed with an ultra-slim wall structure and compact outer dimension. Equipped with double metal shields, this bearing features excellent dustproof performance and stable closed protection, making it suitable for long-term continuous operation in ordinary industrial environments without complex sealing accessories.

Boasting ultra-light weight and minimal rotational inertia, the 6904ZZ delivers extremely smooth and sensitive rotational operation with low friction, low noise and high rotational accuracy. Its optimized thin-wall structural design effectively reduces the overall assembly volume and equipment weight, helping mechanical devices achieve more flexible and energy-efficient operation. The bearing maintains outstanding dimensional stability and running uniformity under standard operating conditions, supporting stable high-speed rotation for a long service cycle.

With standard deep groove raceway structure, the 6904ZZ can bear both radial load and moderate bidirectional axial load, ensuring balanced and reliable bearing capacity for light-duty precision transmission systems. The pre-installed internal high-quality grease enables long-lifespan lubrication with no frequent maintenance required, realizing plug-and-play and low-maintenance operation.

The 6904ZZ thin-section shielded bearing is specially developed for precision light-load equipment with limited installation space and strict lightweight requirements. It is widely applied in slim-structured precision machinery that demands high rotational stability and sensitive dynamic response.

Typical application scenarios include miniature precision motors, 3C electronic automated processing equipment, precision optical instruments, medical miniature transmission devices, lightweight robotic joint components, precision instrumentation and small-sized automated transmission mechanisms. It perfectly adapts to steady, high-speed and light-load operating environments, providing reliable and durable bearing support for high-precision compact mechanical systems.

3D printing equipment, small 3-axis CNC milling spindles, miniature servo motors and brushless drive motors, low-power industrial blower and fan units, portable electric power tools, automated conveyor idler components, lightweight robotic joint actuators, precision camera gimbal stabilization systems, dental and miniature medical transmission devices, as well as high-precision instrument rotating shafts. It perfectly adapts to steady, high-speed and light-load operating environments, providing reliable and durable bearing support for high-precision compact mechanical systems.

HXB has a set of more than 10 years of technical optimization precipitation, with the international advanced development concept of the development process, with the ability of design analysis, engineering production, test evaluation and technical management.

It has dozens of national patents. The technicians are proficient in using computer aided design software. PLM system is being progressively implemented.

Experimental Testing / Testing Ability

HXB has a comprehensive laboratory (including durability, physical and chemical, high and low temperature cycle, enamel-wire laboratory, performance, gear, magnetic observation room), with dozens of various equipment and instruments, with the ability to test and verify the performance of new products and components such as magneto, starter motor, generator electronic products. We will support you in selecting the best spindle bearings for your application.

∗ 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

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.

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.