Product Description: Flat Spring Washers (Conical Disc Springs)

Product Summary

Our Flat Spring Washers, also known as conical disc springs or Belleville washers, deliver high spring force within a compact axial space. Unlike standard flat washers, these conical-shaped components actively maintain bolt preload under vibration, thermal expansion, and material settling. They stack easily to achieve custom deflection and load characteristics. Manufactured from spring steel or stainless steel with various finishes, they provide reliable bolted joint security for demanding industrial applications.

Technical Specifications

Product Applications

Flanged Joints in High-Temperature Service rely on these washers to compensate for thermal expansion and gasket creep.

1. Petrochemical refinery flange connections with cyclic temperature changes

2. Steam line flanges where heat cycles cause bolt elongation

3. Exhaust system joints in heavy-duty vehicles

4. Heat exchanger bolted covers maintaining seal compression

5. Boiler manway and handhole closures

6. High pressure gas pipeline flanges under thermal transients

Heavy Machinery and Equipment use Flat Spring Washers to absorb shock and maintain assembly integrity.

1. Mining crusher and vibrating screen mounting bolts

2. Compressor and pump housing fasteners

3. Wind turbine tower and hub bolted ring connections

4. Railroad rail fastening systems

5. Agricultural equipment subjected to field vibrations

6. Construction machinery engine mounts

Electrical and Power Applications benefit from consistent pressure across bolted connections.

1. Bus bar and electrical panel connections preventing loose terminals

2. Transformer tank cover bolts compensating for oil temperature changes

3. Switchgear and circuit breaker mounting

4. Solar panel frame fasteners exposed to wind vibration

5. Generator stator bolted joints

6. Battery terminal connections

Valve and Actuator Assemblies demand preload retention under dynamic pressure cycles.

1. Control valve body bonnet bolts

2. Actuator yoke and bracket connections

3. Safety relief valve flange bolts

4. Hydraulic manifold mounting

5. Pneumatic cylinder end cap fasteners

6. Pressure regulator assemblies

Automotive and Transportation applications require vibration-resistant fastening in confined spaces.

1. Transmission clutch pack spring washers

2. Engine timing chain tensioner bolts

3. Differential bearing preload adjustment

4. Brake caliper mounting brackets

5. Suspension component fasteners

6. Exhaust manifold studs and nuts

Product Advantages

Select Flat Spring Washers for active joint security and long-term reliability without complex systems.

1. Space Efficient: Achieves high spring force within very low axial height compared to coil springs

2. Vibration Proof: Absorbs dynamic loads and prevents nut loosening from machinery operation

3. Thermal Compensation: Maintains bolt preload when temperature changes cause material expansion or contraction

4. No Re-Torquing Needed: Eliminates repeated tightening after gasket settling or bolt relaxation

5. Customizable Performance: Stack in parallel to increase load, in series to increase deflection, or combine both

6. Predictable Spring Rate: Progressive load curve matches increasing bolt stretch under pressure

7. Material Versatility: Available in carbon or stainless steel with corrosion-resistant coatings for any environment

8. Easy Installation: Directly replaces flat washers without special tools or training

9. Long Service Life: Engineered for millions of cycles without fatigue failure

10. Cost Effective: Low cost per joint compared to hydraulic tensioning or complex spring systems

11. FAQ

    1. Are you trading company or manufacturer ?
    We are manufacturer ,You can see the certification.
    2. How long is your delivery time?
    Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
    3. Do you provide samples ? is it free or extra ?
    Yes, we could offer the sample for free charge but need pay the cost of freight.
    4. What is your terms of payment ?
    Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.