Jiangsu Yinghong Transmission Technology Co., Ltd.
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SF69 Series SUS440 Stainless Steel Flanged Bearings

The F69 series consists of typical thin-walled, deep-groove ball bearings with flanges, featuring an optimized geometry that delivers an exceptional weight-to-performance ratio. In applications such as drones, handheld electronic devices, and portable medical instruments, this lightweight design effectively reduces the device's overall weight, thereby extending operating time or enhancing maneuverability.

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Bearing Features

Thanks to their relatively small rolling elements and balanced structural design, F69 series bearings generate minimal centrifugal force during high-speed rotation. This allows them to easily handle high-speed requirements—reaching tens of thousands of revolutions per minute—while maintaining low noise and vibration levels. The integrated flange design eliminates the need for complex installation steps involving retaining rings; during automated assembly, the flange serves as a reference surface, ensuring consistent alignment of all bearings within the device. Furthermore, the use of SUS440 material—which is non-magnetic (or weakly magnetic)—gives these bearings a distinct advantage in precision electronic environments sensitive to magnetic fields.

Technical Specifications

Bearing Reference Boundary Diameters Basic Dynamic Basic Static Limiting Speeds
Flange Open Shield d
mm		 D
mm		 Df
mm		 B
mm		 Bf
mm		 B1
mm		 Bf1
mm		 rsmin
mm		 Cr(kN) Cor(kN) Grease Oil
F SF691 - 1 4 5 1.6 0.5 - - 0.1 0.137 0.039 13.2 14.8
F SF692 ZZ 2 6 7.5 2.3 0.6 3 0.8 0.15 0.333 0.098 8.3 9.3
F SF693 ZZ 3 8 9.5 3 0.7 4 0.9 0.15 0.559 0.176 6 6.7
F SF694 ZZ 4 11 12.5 4 1 4 1 0.15 0.96 0.353 4.4 4.9
F SF695 ZZ 5 13 15 4 1 4 1 0.2 1.08 0.431 3.7 4.1
F SF696 ZZ 6 15 17 5 1.2 5 1.2 0.2 1.34 0.519 3.1 3.5
F SF697 ZZ 7 17 19 5 1.2 5 1.2 0.3 1.61 0.715 2.8 3.1
F SF698 ZZ 8 19 22 6 1.5 6 1.5 0.3 2.23 0.921 2.4 2.7
F SF699 ZZ 9 20 23 6 1.5 6 1.5 0.3 2.47 1.08 2.3 2.6

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Jiangsu Yinghong Transmission Technology Co., Ltd.

About Us

Jiangsu Yinghong Transmission Technology Co., Ltd. (YHU) was established in 2024 through the joint investment of Dongguan Yinghong, Linqing Boshuo, and Yancheng Jiwei. As China SF69 Series SUS440 Stainless Steel Flanged Bearings Suppliers and Custom SF69 Series SUS440 Stainless Steel Flanged Bearings Factory, specializing in the research, development, manufacturing, and service of transmission products, we leverage extensive industry experience and strong technical expertise to provide reliable, energy-efficient transmission solutions for customers worldwide.
The company covers more than 70 mu of land and operates nearly 10,000 square meters of manufacturing facilities. As a professional manufacturer of precision special bearings in China, we have introduced advanced Japanese precision manufacturing technology and equipped our facility with automated production lines and high-precision testing equipment. A comprehensive quality management system ensures consistent product quality and reliable performance.
As a National High-Tech Enterprise, Yinghong holds multiple invention and utility model patents and has obtained internationally recognized certifications including IATF 16949, RoHS, CE, and SGS. These certifications enable us to meet diverse customer requirements and provide effective solutions for demanding applications and complex technical challenges.
We specialize in the production of high-precision deep groove ball bearings and custom non-standard bearings under our registered trademark, “YHU”. Our main products include bearing steel bearings, stainless steel bearings, ceramic bearings, and plastic bearings.
YHU bearings are designed to deliver low noise, low vibration, low friction, high precision, great sealing performance, and high-speed operation. They also offer self-lubrication, corrosion resistance, rust resistance, acid and alkali resistance, chemical resistance, electrical insulation, non-magnetic properties, high-temperature resistance, low-temperature adaptability, and long service life, making them suitable for demanding operating environments.
Our bearings and bearing assemblies are widely used in electric motors, power tools, pneumatic tools, robotics, drones, household appliances, precision instruments, semiconductor equipment, medical devices, marine equipment, aerospace applications, financial equipment, textile machinery, fishing equipment, and a wide range of specialized industrial equipment.

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