Wholesale Flange Series Minature Ball Bearing

Flange Series Miniature Ball Bearings: Precision in Compact Packages

Shanghai Yinin Bearing & Transmission Company is a Wholesale Flange Series Minature Ball Bearing manufacturer and supplier with over two decades of bearing expertise. Since 1999, we have evolved from representing Chinese bearing makers to operating our own manufacturing facilities, including Jiangsu Dahua Bearing Manufacturing Co., Ltd. Our flange series miniature ball bearings are engineered for applications where space is tight, precision is non-negotiable, and reliable rotation is critical.

We supply three distinct series—metric, inch, and extended—each designed to meet specific dimensional and performance requirements. Whether you need a standard metric size for a medical device or an inch-series bearing for aerospace actuation, our range covers bore sizes from as small as 1 mm up to 10 mm, with outer diameters up to 30 mm. Our factory in Jiangsu Province produces these bearings with strict quality control, ensuring consistent geometry, low noise, and long service life.

Our Flange Series Range

Flange series miniature ball bearings feature an integral flange on the outer ring, which simplifies housing design and axial location. We offer three sub-families:

Application Fit and Engineering Value

Flange series miniature ball bearings are ideal for rotating shafts where axial space is limited and a simple, secure mounting is required. The flange eliminates the need for a separate shoulder or snap ring, reducing assembly time and part count. We understand that each application has unique demands—whether it's high speed, low torque, or resistance to corrosion.

Our engineering team works with you to select the right bearing based on load, speed, and environmental factors. For example, in medical devices like surgical handpieces, we recommend stainless steel bearings with special lubricants for sterilization resistance. In automation equipment, we often supply sealed bearings with low-friction grease to minimize maintenance. We also support custom non-standard bearings, as our integrated design and production capabilities allow us to modify dimensions, materials, or lubrication to fit your exact specification.

Materials and Quality Assurance

We manufacture our flange series bearings from high-carbon chrome steel (GCR15) or AISI 440C stainless steel, depending on the application. Chrome steel offers high hardness and fatigue life, while stainless steel provides corrosion resistance for washdown or medical environments. Our quality system includes inspection after each manufacturing process, and finished bearings undergo full inspection according to customer requirements and international standards. We use precision testing instruments in our R&D laboratory to verify dimensional accuracy, radial clearance, and noise levels.

Configuration Options and Customization

We offer several configuration choices to match your assembly and performance needs:

• Shields and Seals: Open, metal shields (ZZ), or rubber seals (2RS) to protect against contamination.
• Lubrication: Standard grease, low-temperature grease, high-speed oil, or food-grade lubricant.
• Cages: Steel or polymer cages for reduced noise and weight.
• Materials: Chrome steel or stainless steel rings and balls.
• Precision Grades: ABEC-1, ABEC-3, ABEC-5, or ABEC-7 as required.

For high-volume orders, we can also design custom flanges, non-standard bore sizes, or special tolerances. Our MOQ is as low as 100 pieces for standard items, allowing you to test prototypes before committing to full production.

Integration and Installation Support

Flange series bearings are designed for simple press-fit installation into a housing with a counterbore. The flange provides accurate axial location, and we can supply technical drawings and mounting recommendations to ensure correct fit. Our team can advise on shaft and housing tolerances, recommended fits, and lubrication methods to maximize bearing life. We also offer training for your assembly staff on proper handling and installation techniques to prevent damage.

Quality Assurance and Testing

Every batch of flange series bearings undergoes rigorous testing before shipment. We perform dimensional checks using calibrated instruments, noise testing to ensure smooth operation, and visual inspection for surface defects. For critical applications, we can provide material certificates, dimensional reports, and test data upon request. Our quality management system aligns with international standards, and we are committed to continuous improvement through our QC center.

Information We Use to Configure Your Solution

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

• Bearing series (metric, inch, or extended) and part number if known.
• Bore diameter, outer diameter, and width (or flange dimensions).
• Required material (chrome steel or stainless steel).
• Operating load (radial and axial) and speed (RPM).
• Environmental conditions (temperature, humidity, corrosive exposure).
• Desired precision grade and any special tolerances.
• Shield/seal type and lubrication preference.
• Estimated annual quantity and target delivery schedule.

With this information, we can recommend the optimal bearing design, provide performance data, and confirm lead times. Our sales team responds within 12 hours on working days.

Packaging and Delivery

We package bearings individually in anti-corrosion paper or plastic tubes, then in cartons suitable for export. Standard in-stock items ship within 3 working days, while custom orders typically require 2-4 weeks depending on complexity. We export worldwide, with major markets in the USA, Europe, and Asia, and we handle all export documentation.

Frequently Asked Questions

What is the difference between metric and inch flange series bearings?

Metric series bearings have dimensions in millimeters and are the global standard for most new designs. Inch series bearings use imperial dimensions and are often required for replacement in older equipment or for North American specifications. We stock both to serve a wide range of industries.

Can you provide stainless steel flange bearings for medical or food applications?

Yes, we offer AISI 440C stainless steel bearings that resist corrosion and can withstand sterilization processes. We can also supply food-grade lubricants that meet FDA requirements for incidental food contact.

What is the minimum order quantity for flange series bearings?

Our standard MOQ is 100 pieces for in-stock sizes. For custom or non-standard bearings, the MOQ may be higher depending on the complexity and tooling requirements. We work with you to find a cost-effective quantity for your project.

How do you ensure the quality of your bearings?

We perform inspections at each stage of production, from raw material to finished product. Final bearings are tested for dimensions, noise, and visual defects. We can provide inspection reports and certificates of conformance with each shipment.

Do you offer custom flange designs or non-standard sizes?

Yes, our engineering team can design and manufacture custom flange bearings to your exact specifications. We have experience with non-standard bore sizes, special widths, and unique flange configurations. Contact us with your requirements.