SUS420 Flange Bearings Manufacturers

Product Range and Positioning

We manufacture SUS420 flange bearings as a dedicated product family within our stainless steel flanged bearing line. The flange is integral to the outer ring, with mounting holes drilled to specification, allowing direct bolt-on installation. This design simplifies assembly, reduces component count, and ensures consistent axial positioning in your equipment.

Our available series are selected to cover the most common miniature and small-bore configurations:

• SF60 series – compact radial section, ideal for limited envelope designs.
• SF63 series – slightly larger bore, balanced load capacity and speed.
• SF69 series – extra-thin section, weight-sensitive applications.
• SF62 and SF68 series – intermediate sizes for design flexibility.

All series are available in open, shielded (ZZ), or sealed (2RS) configurations, with a choice of grease type and fill level to match your operating temperature and speed requirements.

Application Fit and Process Integration

SUS420 flange bearings are used across a wide range of industries where stainless steel is required for hygiene, corrosion resistance, or magnetic properties. Common applications include:

• Medical and dental handpieces – high-speed, low-noise operation.
• Food and beverage processing equipment – washdown environments.
• Semiconductor manufacturing – cleanroom compatibility.
• Robotics and automation – precise positioning in compact joints.
• Textile machinery – resistance to moisture and chemicals.
• Instrumentation and precision tools – low friction and high accuracy.

The flange design allows direct mounting onto a machined plate, which is particularly advantageous in multi-bearing assemblies where alignment is critical. We can supply bearings with pre-drilled flange holes to match your bolt pattern, or provide them without holes for custom drilling.

Material and Performance Characteristics

SUS420 is a martensitic stainless steel that offers a good balance of hardness and corrosion resistance. After heat treatment, it achieves a surface hardness suitable for bearing raceways, while maintaining sufficient toughness for dynamic loads. Our SUS420 flange bearings are manufactured with:

• Raceways ground and honed to achieve low noise and vibration levels.
• Balls made from SUS420 or equivalent stainless steel, with consistent sphericity.
• Cages available in stainless steel, PTFE, or PEEK depending on speed and chemical exposure.
• Seals and shields designed to retain lubricant and exclude contaminants.

These bearings operate reliably in temperatures from -40°C to +150°C with standard grease, and can be extended to higher ranges with specialty lubricants. They offer excellent resistance to water, mild acids, and alkalis, making them suitable for washdown and outdoor applications.

Engineering and Customization

We understand that standard off-the-shelf bearings do not always fit the application. Our engineering team supports customization of the following parameters:

• Bore diameter, outer diameter, and width modifications.
• Flange dimensions, hole pattern, and counterbore depth.
• Internal clearance (C2, CN, C3) to suit interference fits or temperature gradients.
• Lubrication type, fill quantity, and food-grade or low-outgassing options.
• Sealing solutions – contact, non-contact, or custom lip seals.

We also offer prototype development and small-batch production for new designs. Our in-house tooling and flexible production lines allow us to respond quickly to design changes without excessive lead times.

Quality Assurance and Compliance

Our factory operates under a comprehensive quality management system certified to IATF 16949, with additional compliance to RoHS, CE, and SGS testing standards. Every batch of SUS420 flange bearings undergoes dimensional inspection, noise and vibration testing, and visual examination before shipment. We maintain traceability from raw material to finished product, and can provide material certificates and inspection reports on request.

Our production facility is equipped with automated grinding lines and high-precision measuring instruments, ensuring consistent geometry and surface finish across large volumes. We also perform 100% sorting for critical dimensions on request.

Information We Use to Configure Your Solution

To prepare an accurate quotation and technical proposal, we need the following project details. The more complete the information, the faster we can respond with a suitable configuration.

If you have a drawing or sample, we can reverse-engineer and produce a matching bearing. Our team will work with you to confirm tolerances, fits, and performance targets before mass production.

Installation, Maintenance, and Support

Our SUS420 flange bearings are designed for straightforward installation. The flange provides a positive stop, and the mounting holes allow secure fastening. We recommend using a press or a soft-faced hammer to seat the bearing against the flange face, avoiding direct impact on the seal or shield.

For maintenance, the sealed versions are lubricated for life, while open or shielded versions may require periodic re-lubrication depending on speed and contamination levels. We provide detailed handling and installation instructions with each shipment, and our technical team is available for post-sale support, including failure analysis and bearing selection guidance.

Frequently Asked Questions

For more information about our full range of stainless steel flanged bearings or to discuss your specific project, contact our engineering team. We are ready to provide a tailored solution.