KET FR1 / FR1ZZS Inch Miniature Flanged Ball Bearing (1.397x4.762x2.779mm) - High-Speed Precision Micro Bearing

Product Overview
Engineered for compact and high-speed industrial applications, the KET FR1 Inch Flange Bearing delivers exceptional performance and reliability. Manufactured by Ningbo Kexiang Bearing Technology Co., Ltd. (KET), this miniature flanged ball bearing is specifically designed to provide high rigidity and secure positioning in assemblies where radial installation space is strictly limited.

Whether you are developing advanced UAVs, brushless micro motors, robotics, or precision machine tools, the FR1 series ensures smooth operation and minimal friction. Supplying top-tier B2B manufacturers across Europe, Central Asia, and globally, we ship directly from our automated ISO9001-certified facility in Ningbo, China.

Key Specifications

• Model Options: FR1 (Open) / FR1ZZS (Shielded)

• Inner Diameter (d): 1.397 mm

• Outer Diameter (D): 4.762 mm

• Flange Outer Diameter (D1): 5.944 mm

• Width/Height (B): 1.984 mm (Open) / 2.779 mm (Shielded)

• Flange Width: 0.584 mm (Open) / 0.787 mm (Shielded)

• Basic Dynamic Load (Cr): 231 N

• Basic Static Load (Cor): 66 N

• Limiting Speed: 90,000 RPM (Grease) / 110,000 RPM (Oil)

Primary B2B Applications

• Aerospace: Unmanned Aerial Vehicles (UAVs) & Drones

• Electromechanical: Micro Motors & Brushless Motors

• Industrial Automation: Robotics & Precision Machine Tools

• Scientific & Medical: Precision Testing Instruments & Imaging Equipment

Strategic Manufacturing Partner Qualifications

• Internationally Certified Quality Systems: We operate strictly under rigorous global quality management frameworks, proudly holding dual ISO9001 certifications and the stringent automotive industry standard IATF16949.

• Recognized Engineering Innovation: Our continuous investment in engineering R&D is officially validated by our recognition as a High-Tech Enterprise and a Technology-Based SME in Zhejiang Province.

• Global Material Safety Compliance: We exclusively utilize premium raw materials that meet strict international safety directives. Our products pass comprehensive third-party SGS laboratory testing for SVHC and RoHS compliance.

• Uncompromised Quality Control: 100% precision-tested utilizing state-of-the-art roundness instruments and automatic noise testing equipment prior to global shipment.

Contact Us for Global Wholesale & Bulk Purchasing

Optimize your supply chain costs without compromising on extreme speed and precise axial positioning. Contact our international business development department today for B2B quotes, comprehensive technical datasheets, or to request free evaluation samples.