Premium KET FR155 Inch Flange Bearing | 3.967x7.938x2.779mm Precision Miniature Bearing for Micro-Motors & Robotics

Source wholesale KET FR155 Inch Flange Bearings directly from the manufacturer. High-speed, precision-engineered for UAVs, motors, and robotics. Fast B2B shipping available for European, Russian, and Central Asian distributors.

Product Description:

Overview

Engineered for uncompromising precision and durability, the KET FR155 Inch Flange Bearing is a top-tier solution for highly demanding industrial applications. Manufactured by Ningbo Kexiang Bearing Technology Co., Ltd., this miniature flange bearing is designed to simplify mounting while providing exceptional radial support in confined spaces. Trusted by major international B2B distributors and original equipment manufacturers, the FR155 is the ultimate choice for next-generation UAVs (drones), micro-motors, smart household appliances, and advanced robotics.

Key Features & Advantages

• Simplified Installation: The integrated outer ring flange allows for precise axial positioning directly against housing walls, eliminating the need for complex retaining rings.

• High-Speed Performance: Optimized for low friction, ensuring smooth operation and minimizing heat generation even at extreme rotational speeds.

• Premium Material Grade: Constructed from advanced bearing steel for maximum wear resistance, extending the operational lifespan of your mechanical assemblies.

• Global B2B Ready: Packaged and certified for seamless cross-border wholesale distribution, perfectly suited to meet the compliance and quality standards of international logistics networks.

Technical Specifications

• Brand: KET

• Model Number: FR155 (Open Type) / FR155ZZS (Shielded Type)

• Inner Diameter (d): 3.967 mm

• Outer Diameter (D): 7.938 mm

• Flange Outer Diameter (D1): 9.119 mm

• Width / Height (Open Type): 2.779 mm

• Width / Height (Shielded Type): 3.175 mm

• Basic Dynamic Load Rating (Cr): 360 N

• Basic Static Load Rating (Cor): 149 N

• Limiting Speed: Up to 63,000 RPM with oil lubrication (53,000 RPM with grease lubrication)

Ideal Application Industries

• UAV and Drone Propulsion Motors

• Precision Robotics and Haptic Devices

• Telecommunication and Office Equipment

• Automotive Accessories and Variable Speed Devices

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.