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Barrel Spring – Non-Linear Compression for Variable Loads
About the Product
Barrel springs, also known as convex springs or tapered springs, are characterized by a coil diameter that is larger in the middle and smaller at the ends. This unique barrel shape provides a progressive, non-linear load deflection. This means the spring's rate increases as it compresses, offering high stability and resisting the tendency to buckle, making it ideal for applications with variable or heavy loads in confined spaces.
- Provides a progressive, non-linear spring rate.
- High stability and excellent resistance to buckling (sideways bending).
- Designed to fit specific constrained mounting pockets or holes.
- Suitable for dynamic applications requiring controlled damping.
Barrel springs are often custom-engineered to precise specifications for automotive, aerospace, and heavy machinery where reliable load control and stability under high compression are essential. Their tapered form allows the spring to collapse neatly, saving crucial space at solid height.
Technical Specifications
Characteristics: Compression spring with a convex, barrel-shaped profile. The rate increases as coils are forced to touch.
Measurements: Wire Diameter: 0.8 mm – 15.0 mm. Mid-Diameter and End-Diameter are customized based on customer blueprint.
Configurations: Ends can be open or closed, with options for ground or non-ground finishing. Common materials include Chrome Vanadium and Stainless Steel.
Rate or Stiffness: Progressive, typically ranging from 15 N/mm (initial) up to 120 N/mm (final rate).
Service Life: Excellent fatigue life, suitable for applications requiring hundreds of thousands of cycles under proper loading.
Tolerances: Tight control over load at specified deflection and free height dimensions for precise fitting.
Applications: Automotive suspension systems, shock absorbers, heavy-duty valves, railway buffers, and machine tool safety mechanisms.
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