We manufacture and grind compression springs with a wire diameter of 0.15mm up to 30mm.  The most common compression spring is a straight cylindrical spring.  There are also conical, barrel, and hourglass compression springs, as well as constant and variable pitch.

 

🌀 Types of Compression Springs by Shape and Pitch:
 

1. Straight Cylindrical Compression Springs

This is the most common type of compression spring.

• Shape: Uniform diameter throughout the body.

• Pitch: Can be constant or variable.

• Use Case: General-purpose applications—automotive parts, electronics, machinery, etc.

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2. Conical Compression Springs

These springs have a tapered, cone-like shape, narrowing from one end to the other.

• Purpose: Designed to minimize solid height when fully compressed, as the coils nest into each other.

• Use Case: Battery compartments, electrical contacts, or where space-saving is essential.

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3. Barrel Compression Springs (Convex Shape)

Barrel springs are wider in the middle and taper toward both ends.

• Purpose: Improved buckling resistance and stability compared to straight springs.

• Use Case: Applications requiring long springs or large deflections without buckling—such as shock-absorbing systems.
   

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4. Hourglass Compression Springs (Concave Shape)

Opposite of barrel springs, these are narrowest at the center and widen at both ends.

• Purpose: Focuses stress and flexibility toward the center.

• Use Case: Specialty applications requiring central deflection or aesthetic form.

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📏 Types by Pitch

5. Constant Pitch Compression Springs

Each coil is wound at a uniform distance from the next.

• Load Curve: Linear—force increases proportionally with deflection.

• Use Case: Ideal for predictable, standard load-bearing applications.

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6. Variable Pitch Compression Springs

Coils are wound with varying spacing between turns.

• Load Curve: Non-linear—can be soft initially and become stiffer as more load is applied.

• Use Case: Situations requiring progressive resistance, like vehicle suspension systems or soft-close mechanisms.

 

Type	Shape/Feature	Key Advantage	Common Use
Straight Cylindrical	Uniform	Versatile, cost-effective	General industrial & OEM
Conical	Tapered cone	Compact solid height	Battery packs, electronics
Barrel (Convex)	Wide center	Anti-buckling, stable	Shock absorbers
Hourglass (Concave)	Narrow center	Targeted flexibility, aesthetics	Custom/mechanical design
Constant Pitch	Uniform spacing	Linear performance	Load-bearing parts
Variable Pitch	Uneven spacing	Progressive resistance	Suspension, dynamic systems