China Spring Washer Manufacturer, Supplier, Factory

What is a Spring Washer?

A spring washer, also known as a disc spring or Belleville washer, is a type of fastener designed to provide a flexible preload and maintain tension in bolted assemblies. These conical-shaped washers compress under load, acting like a spring to absorb shock, reduce vibration, and prevent loosening due to thermal expansion or dynamic forces. They are crucial components in countless mechanical systems, from automotive and aerospace to heavy machinery and consumer electronics, ensuring the long-term reliability and safety of fastened joints.

Key Features and Benefits of Our Spring Washers

• Superior Vibration Dampening: Our washers are engineered to absorb and dissipate vibrational energy, effectively preventing nuts and bolts from loosening over time.
• Constant Tension Maintenance: The spring action maintains a consistent clamp force, compensating for material settling, gasket creep, or thermal cycling.
• High Load Capacity: Despite their compact size, our spring washers can support significant static and dynamic loads.
• Corrosion Resistance: Available in various materials and coatings to withstand harsh environmental conditions.
• Reusability: Manufactured from high-grade materials that allow for multiple uses without significant loss of spring properties.

Detailed Product Specifications

Our spring washers are manufactured to international standards, including DIN 6796 and ANSI B18.21.1, ensuring consistent quality and performance. Below is a detailed breakdown of our product specifications.

Standard Material and Coating Options

Standard Size Chart (Based on DIN 6796)

Applications and Industries

Spring washers are versatile components used to solve fastening challenges across a wide spectrum of industries. Their primary function is to prevent self-loosening of fasteners subjected to vibration and thermal fluctuations.

• Automotive: Engine mounts, transmission systems, suspension components, and brake assemblies.
• Aerospace: Critical airframe structures, engine components, and avionics systems where reliability is paramount.
• Heavy Machinery: Construction equipment, agricultural machinery, and industrial presses.
• Electronics: Securing components on PCBs and within enclosures that are subject to shock or vibration.
• Energy Sector: Wind turbines, oil and gas drilling equipment, and power generation systems.

Technical Design Considerations

When selecting a spring washer for your application, several key factors must be considered to ensure optimal performance and longevity. The load-deflection characteristics are critical. A single washer provides a specific spring rate, but stacking them in parallel increases the load capacity, while stacking in series increases deflection. It is vital to calculate the required preload and the working deflection range to prevent the washer from being flattened ("bottoming out"), which would nullify its spring function. Proper surface finish and flatness of the mating surfaces are also essential to ensure uniform load distribution and prevent premature failure. For highly corrosive environments, material selection becomes the primary concern, often necessitating stainless steel or specialized alloys like Inconel.