Single Coil Spring Washers, also known as Split Lock Washers, are mechanical components used to prevent loosening of fasteners due to vibration or torque. These washers are designed with a split, or gap, in the ring, which exerts a spring-like force when compressed. This force increases the friction between the bolt or nut and the substrate, reducing the likelihood of the fastener loosening over time.
Key Features of Single Coil Spring Washers:
- Material:
- Carbon Steel or Stainless Steel: Single coil spring washers are typically made from high-strength carbon steel or stainless steel to provide durability and resistance to wear.
- Corrosion Resistance: They can be galvanized, zinc-plated, or made from stainless steel to resist corrosion, especially in harsh environments like railways or machinery exposed to moisture.
- Design:
- Coiled Shape: The washer is designed as a helical coil or split ring. When a load is applied, it compresses and provides a spring-like force that helps maintain tension.
- Split Opening: The split in the ring allows the washer to exert force against the nut or bolt head, increasing the friction and preventing rotation or loosening.
- Applications:
- Railway Systems: Single coil spring washers are used in railway track assemblies to secure bolts and nuts that experience high vibration and dynamic loads.
- Machinery and Equipment: In industrial machinery, these washers help prevent fasteners from loosening due to constant movement, torque, or vibration.
- Construction: Used in construction applications, particularly in areas subject to dynamic forces or environmental vibrations.
- Installation:
- Correct Positioning: The washer is placed between the fastener (bolt or nut) and the surface of the material. As the fastener is tightened, the washer compresses and exerts spring force.
- Increased Friction: The spring action of the washer increases the friction between the threads of the fastener and the material, helping to lock the fastener in place.
- Maintenance:
- Regular Checks: Since these washers are subjected to compression and stress, they should be checked regularly to ensure they are still providing sufficient locking force.
- Replacement: Over time, if the washer loses its spring action due to fatigue or deformation, it should be replaced to maintain the integrity of the fastening system.
