KET Premium FR166 / FR166ZZ Inch Flange Miniature Bearing | Precision High-Speed Motor Bearing

Source high-quality KET FR166 and FR166ZZ inch flange bearings for industrial manufacturing. Engineered for micro motors, robotics, and high-speed equipment. ISO9001 certified. Global B2B shipping available.

Product Description:

Overview Optimize your industrial assemblies with the KET FR166 (Open) and FR166ZZ (Shielded) Inch Flange Miniature Bearings. Manufactured by Ningbo Kexiang Bearing Technology Co., Ltd., these bearings are designed to provide superior rotational accuracy and high limiting speeds for demanding applications.

The FR166 series is an essential component for telecommunications, medical equipment, and advanced robotic systems, delivering low-friction performance that extends the operational lifespan of your precision machinery.

Key Features & Industrial Advantages

• Integrated Flange Design: The flanged outer ring allows for secure, direct axial positioning within the housing, streamlining the assembly process and eliminating the need for extra thrust washers.

• High-Speed Durability: Capable of sustaining limiting speeds up to 60,000 RPM (with oil lubrication), ensuring stable performance in continuous, high-cycle operations.

• Environmental Adaptability: Choose the Open configuration (FR166) for enclosed, oil-lubricated systems, or the Shielded configuration (FR166ZZ) to effectively retain grease and block industrial dust.

• Certified Precision: Manufactured under rigorous quality control protocols to ensure dimensional accuracy and reliable load ratings for global industrial standards.

Technical Specifications All specifications are strictly verified against the Ningbo Kexiang Bearing Technology Co., Ltd..pdf technical manual:

• Model: FR166 (Open) / FR166ZZ (Shielded)

• Inner Diameter (d): 4.762 mm

• Outer Diameter (D): 9.525 mm

• Flange Outer Diameter (D1): 10.719 mm

• Width - Open & Shielded (B/B1): 3.175 mm

• Flange Width - Open (C): 0.584 mm

• Flange Width - Shielded (C1): 0.787 mm

• Basic Dynamic Load Rating (Cr): 710 N

• Basic Static Load Rating (Cor): 270 N

• Limiting Speed (Grease): 50,000 RPM

• Limiting Speed (Oil): 60,000 RPM

Primary Applications

The KET FR166 series is highly recommended for cross-border B2B procurement in the following sectors:

• UAV mechanisms and brushless motor assemblies

• Precision testing equipment and medical instruments

• Automated robotic joints and smart home appliances

• Power tools and precision office machinery

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.