Inch FR-Series Manufacturers

Inch FR-Series Flanged Bearings – Precision, Compact, and Built for High-Volume Production

As a professional Wholesale Inch FR-Series Factory, Jiangsu Yinghong Transmission Technology Co., Ltd. (YHU) manufactures a complete range of inch-dimensioned flanged ball bearings in bearing steel. These bearings combine a deep groove ball bearing with an integral flange on the outer ring, allowing direct bolt-on mounting without a separate housing. Our FR-Series is designed for applications where space is tight, alignment is critical, and reliability is non-negotiable.

Leveraging Japanese precision manufacturing technology and automated production lines, we produce these bearings with consistent geometry, low noise, and long service life. Whether you need standard inch sizes or custom flange configurations, our factory in China delivers high-quality components for global OEMs and distributors.

Product Range and Series Overview

Our Inch FR-Series includes a wide selection of bore sizes and flange diameters, all manufactured from high-carbon chromium bearing steel (equivalent to GCr15 or 52100). The range covers miniature and small-inch bearings, with options for open, shielded (ZZ), or sealed (2RS) configurations. Below is a summary of the available series:

All series are available with C3 clearance or custom preload, and we can supply with grease or oil lubrication as per your specification. For non-standard inch sizes or special flange geometries, our engineering team will work from your drawing to produce a tailored solution.

Application Fit and Industry Use

Inch FR-Series bearings are ideal for applications where a compact, self-contained bearing with a mounting flange is required. The flange eliminates the need for a separate housing, reducing assembly time and overall weight. Common applications include:

• Electric motors and small gearboxes
• Power tools and pneumatic tools
• Robotics and automation equipment
• Drones and remote-controlled devices
• Household appliances and precision instruments
• Semiconductor manufacturing equipment
• Medical devices and dental handpieces
• Textile machinery and fishing equipment

Because these bearings are manufactured from bearing steel, they offer high hardness, wear resistance, and excellent fatigue life. The deep groove raceway supports both radial and moderate axial loads, making them versatile for many rotating assemblies.

Engineering Value and Manufacturing Precision

Our production process incorporates Japanese precision manufacturing techniques, ensuring tight tolerances on bore, outer diameter, and flange squareness. Each bearing is assembled in a clean environment and undergoes rigorous inspection for noise, vibration, and dimensional accuracy. We achieve low noise levels (20–25 dB) and low friction, which is critical for high-speed applications.

We also offer customization of internal clearance, cage material (steel or polymer), and sealing type. For corrosive environments, we can supply stainless steel versions, but the standard FR-Series is bearing steel. Our engineering team can optimize the bearing design for specific load, speed, and temperature conditions.

Quality Assurance and Compliance

YHU operates under a comprehensive quality management system certified to IATF 16949, RoHS, CE, and SGS standards. We perform 100% inspection on critical dimensions and sample testing on noise, vibration, and seal integrity. Our factory is equipped with high-precision testing instruments, and we maintain traceability from raw material to finished product.

For customers requiring documented quality evidence, we provide material certificates, inspection reports, and test data upon request. Our goal is to ensure that every batch meets your specifications and performs reliably in the field.

Customization and OEM/ODM Support

We understand that standard catalog items may not always fit your design. As a Flanged Bearings manufacturer, we offer full customization services for the Inch FR-Series. This includes:

• Custom bore sizes and flange dimensions
• Special materials (e.g., stainless steel, ceramic balls)
• Modified internal clearance or preload
• Custom seals, shields, and lubricants
• Laser marking and packaging per your requirements

Our R&D team can work from your drawings, samples, or even a concept to develop a prototype and then scale to mass production. We provide full-process service from design to after-sales support.

Information We Use to Configure Your Solution

To prepare an accurate quotation and technical proposal, please provide the following details:

• Bearing series or part number (e.g., FR1-4, FR155)
• Required bore, outer diameter, and flange dimensions (inch or mm)
• Operating speed, load, and temperature range
• Sealing preference (open, ZZ, 2RS) and lubrication type
• Expected annual quantity and packaging requirements
• Any special testing or certification needs

With this information, we can recommend the optimal configuration, confirm lead times, and provide a competitive factory-direct price.

Related Product Lines

Beyond the Inch FR-Series, we manufacture a full range of Bearing Steel Flanged Bearings including metric MF-Series and thin-wall F-Series. For non-flanged applications, our Deep Groove Ball Bearings cover inch R-Series and metric miniature series. All products are manufactured under the same quality system.

Frequently Asked Questions