KET Premium FR3 / FR3ZZ Inch Flange Miniature Bearing | High-Speed Precision Components

Source wholesale KET FR3 and FR3ZZ inch flange bearings directly from the manufacturer. Engineered for micro motors, UAVs, and precision robotics. ISO9001 certified quality with B2B shipping available across Europe, Russia, and global markets.

Product Description:

Overview Elevate your manufacturing standards with the KET FR3 (Open) and FR3ZZ (Shielded) Inch Flange Miniature Bearings. Produced by Ningbo Kexiang Bearing Technology Co., Ltd., these precision components are specifically engineered to provide exceptional rotational accuracy, high load capacity, and stable performance in demanding mechanical environments.

The FR3 series is a vital component for advanced robotics, micro motors, medical instruments, and telecommunication devices, ensuring low friction and long-lasting durability.

Key Features & Industrial Advantages

• Integrated Flange Design: The solid flanged outer ring allows for straightforward axial positioning directly into the housing, which significantly reduces assembly time and eliminates the need for separate thrust washers.

• High Limiting Speeds: Designed to operate smoothly at extreme velocities, capable of reaching up to 53,000 RPM with oil lubrication, making them ideal for high-speed brushless motors and UAV applications.

• Dual Configuration Options: Available in an Open type (FR3) for enclosed oil-bath environments, and a Shielded type (FR3ZZ) to effectively retain grease lubrication while blocking industrial contaminants.

• Consistent Reliability: Manufactured under strict quality management protocols to ensure uniform dimensional tolerances and dependable load ratings for international production lines.

Technical Specifications All structural parameters are verified against the official Ningbo Kexiang Bearing Technology Co., Ltd..pdf technical specifications:

• Model: FR3 (Open) / FR3ZZ (Shielded)

• Inner Diameter (d): 4.762 mm

• Outer Diameter (D): 12.700 mm

• Flange Outer Diameter (D1): 14.351 mm

• Width - Open & Shielded (B/B1): 4.978 mm

• Flange Width - Open & Shielded (C/C1): 1.067 mm

• Chamfer (r): 0.3 mm

• Basic Dynamic Load Rating (Cr): 1300 N

• Basic Static Load Rating (Cor): 485 N

• Limiting Speed (Grease): 43,000 RPM

• Limiting Speed (Oil): 53,000 RPM

Primary B2B Applications

The KET FR3 flange bearing series is trusted by engineers globally for integration into:

• Drone (UAV) motors and automated robotic joints

• High-precision medical and dental equipment

• Telecommunication devices and testing machinery

• Smart household appliances and electric power tools

Global Supply & B2B Wholesale

As a leading factory-direct supplier, KET Bearings provides robust supply chain management and reliable fulfillment for wholesale distributors and manufacturing hubs worldwide. Whether your production facilities are located in European industrial centers, the expanding Russian markets, or Central Asian manufacturing zones, we offer scalable bulk ordering, custom OEM/ODM packaging, and dedicated logistical support to keep your assembly lines moving seamlessly.

Contact our B2B sales team today to request a quote, access technical 3D CAD files, or discuss custom non-standard bearing modifications tailored to your specific project.