KET FR2-5 / FR2-5ZZ Precision Miniature Inch Flange Bearing | 1/8" x 5/16" | Industrial B2B Supply

Wholesale KET FR2-5 and FR2-5ZZ miniature inch flange bearings direct from the manufacturer. ISO9001 certified precision bearings for motors, RC models, and medical instruments. Global B2B shipping available.

Product Overview

Engineered for superior precision and durability, the KET FR2-5 Miniature Inch Flange Bearing is manufactured by Ningbo Kexiang Bearing Technology Co., Ltd. Designed with an integrated outer ring flange, this bearing ensures exact axial alignment and simplifies the mounting process in compact mechanical assemblies, eliminating the need for separate retaining rings.

Available in both open (FR2-5) and shielded (FR2-5ZZ) configurations, these bearings are rigorously tested using advanced roundness and automatic noise testing equipment to guarantee ultra-quiet, high-speed performance. With an ISO9001-certified production process, KET guarantees reliable, factory-direct quality for your most demanding industrial applications.

Key Features & B2B Advantages

• Integrated Flange: Allows for secure seating and precise positioning against housing shoulders.

• High-Velocity Performance: Capable of operating at speeds up to 67,000 RPM with oil lubrication, ensuring stability in high-speed micro motors.

• Shielding Options: Choose the FR2-5ZZ shielded variant for enhanced protection against dust and particulate contamination, extending the bearing's fatigue life.

• Quality Assurance: Subjected to rigorous vibration and noise grading (Z1-Z4, V1-V4 available) to ensure smooth mechanical operation.

Technical Specifications

• Brand: KET

• Model: FR2-5 (Open) / FR2-5ZZ (Shielded)

• Inner Diameter (d): 3.175 mm

• Outer Diameter (D): 7.938 mm

• Flange Outer Diameter (D1): 9.119 mm

• Width (Open - B): 2.779 mm

• Width (Shielded - B1): 3.571 mm

• Flange Width (Open - C1): 0.584 mm

• Flange Width (Shielded - C2): 0.787 mm

• Chamfer (r): 0.1 mm

• Basic Dynamic Load Rating (Cr): 560 N

• Basic Static Load Rating (Cor): 179 N

• Limiting Speed (Grease): 60,000 RPM

• Limiting Speed (Oil): 67,000 RPM

Primary Applications

The compact size and high reliability of the FR2-5 series make it the standard choice for:

• Micro Motors and Robotics

• Telecommunication and Office Equipment

• Precision Medical and Dental Instruments

• High-End RC Models and Drones

• Financial Instruments (e.g., ATM machines, cash counters)

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.