KET FR1-4 / FR1-4ZZS Inch Miniature Flanged Ball Bearing (1.984x6.350x3.571mm) - High-Speed Precision Micro Bearing

Product Overview
Engineered for compact and high-speed industrial applications, the KET FR1-4 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, or robotics, the FR1-4 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.

Key Specifications

• Model Options: FR1-4 (Open) / FR1-4ZZS (Shielded)

• Inner Diameter (d): 1.984 mm

• Outer Diameter (D): 6.350 mm

• Flange Outer Diameter (D1): 7.518 mm

• Width/Height: 2.380 mm (Open) / 3.571 mm (Shielded)

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

• Basic Dynamic Load (Cr): 310 N

• Basic Static Load (Cor): 108 N

• Limiting Speed: 67,000 RPM (Grease) / 80,000 RPM (Oil)

Why Choose KET Bearings?
As a trusted B2B bearing manufacturer established in 2008, KET utilizes advanced automated assembly lines and rigorous roundness and noise testing to ensure superior quality. The integrated flange on the FR1 series allows for precise axial location against housing faces, eliminating the need for internal housing shoulders and reducing your overall manufacturing costs.

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.