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Premium DU Flanged Washers (SF-1 Series): High-Performance PTFE Lined Steel Solutions
Maximize the efficiency of your mechanical assemblies with our SF-1 Series DU Flanged Washers. Unlike standard homogeneous metal washers that require constant lubrication, our SF-1 composite series is engineered with a sophisticated multi-layer structure. By integrating a low-friction PTFE liner with a high-strength steel backing, these washers solve the common industry challenges of surface galling and high maintenance costs in dry-running applications.
Why Choose SF-1 DU Flanged Washers?
The primary advantage of the SF-1 series is its Self-Lubricating Material Synergism. Through advanced sintering technology, these washers provide:
- Exceptional Dry Running: Specifically designed for operation without oil, featuring an ultra-low coefficient of friction and minimal wear rate.
- Superior Surface Protection: During the initial break-in period, the washer creates a transfer film that coats the mating metal surface, forming an oxide-type solid lubricant film to prevent shaft damage.
- Dimensional Stability: Exhibits high chemical resistance and significantly lower water absorption compared to nylon or plastic alternatives, preventing swelling in humid or submerged environments.
Advanced Four-Layer Composite Engineering
Our DU flanged washers utilize a precision-bonded structure to ensure high load-carrying capacity and thermal efficiency:
- PTFE/Fibre Overlay (0.01 ~0.03mm): Provides the essential initial transfer film for smooth, maintenance-free sliding.
- Sintered Bronze Interlayer (0.20 ~0.35mm): Acts as a high-strength reservoir for the PTFE mixture and provides maximum thermal conductivity to dissipate heat.
- Low-Carbon Steel Backing: The structural core that delivers exceptionally high static and dynamic load-carrying capacity.
- Copper/Tin Plating (0.002mm): A specialized exterior treatment that ensures excellent corrosion resistance for the entire component.
Typical Applications
The SF-1 material is the global standard for "trouble-free" performance across diverse industries:
- Automotive & Heavy Duty: Power steering cylinders, disc brake calipers, shock absorbers, and agricultural machinery like tractors and combines.
- Hydraulics & Fluid Power: Gear pumps, axial piston pumps, butterfly valves, and valve trunnions.
- Business Automation: High-cycle components for photocopy machines, computer printers, and mail processing systems.
- Home Appliances: Precision movement in air conditioners, refrigerators, washing machines, and sewing machines.
Technical Specifications & Customization
|
Treatment / Type |
Best For |
Functional Benefit |
|
Standard Steel Backing |
High-Load Systems |
Exceptional structural rigidity and heat dissipation. |
|
PTFE/Fibre Mixture |
Maintenance-Free |
Eliminates the need for grease while maintaining low friction. |
|
Copper/Tin Plating |
Anti-Oxidation |
Provides a protective barrier against environmental corrosion. |
|
Sintered Bronze |
Heat Management |
Rapidly moves heat away from the sliding surface to the steel back. |
|
Flanged Configuration |
Complex Motion |
Handles both radial and axial thrust in rotary or oscillating movements. |
Expert Guidance & Technical Support
If you have questions regarding the load limits of the SF-1 series or require specific data sheets for DU Flanged Washers, our team is here to assist. We provide both standard and customized sizes to fit your specific engineering requirements. Please submit your inquiry via our website contact form or email us directly at [email protected] for a detailed technical consultation.
