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.
 

🏭 Your Manufacturing Capabilities

SS Long produce and grind compression springs made from wire ranging 0.15 mm to 30 mm in diameter. This wide range allows you to serve industries from micro-mechanics and electronics (fine springs) to heavy machinery and industrial applications (large-diameter springs).
 

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🔧 Compression Springs – Overview:
 

Compression springs are open-coil helical springs that offer resistance to a compressive force. When a load is applied, they compress and absorb energy, returning to their original shape when the force is removed.

They are used in applications such as:

• Automotive suspensions

• Valves and actuators

• Medical devices

• Electronics (like buttons and connectors)

• Industrial machinery

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🌀 Types of Compression Springs:
 

1. Straight Cylindrical Springs

• Most common type

• Constant diameter from top to bottom

• Uniform coil pitch

• Easy to manufacture and grind

• Ideal for general-purpose use

 

2. Conical Compression Springs

• Tapered shape: large diameter at one end, smaller at the other

• Benefits:

  • Stability during compression (reduces buckling)

  • Can compress into a very short height (good for tight spaces)

• Used in battery contacts, electrical switches, and shock absorbers

 

3. Barrel Springs (Convex)

• Middle coils have larger diameter than the ends

• Shaped like a barrel

• Benefits:

  • Reduced solid height (space-saving)

  • More uniform stress distribution

  • Better lateral stability

 

4. Hourglass Springs (Concave)

• Narrower diameter in the center

• Opposite of barrel springs

• Benefits:

  • Centralized stress (can be helpful or harmful, depending on use)

  • Used where centering the load is essential

 

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⚙️ Pitch Variants:
 

🔁 Constant Pitch Springs

• The space between coils is uniform

• Predictable load-deflection behavior

• Standard and easiest to produce

 

📈 Variable Pitch Springs

• Coil spacing varies along the length

• Benefits:

  • Progressive load behavior (soft at first, firm later)

  • Can combine soft and hard compression in one spring

• Used in suspension systems, soft-close mechanisms, and vibration control

 

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🛠️ Grinding and Finishing:
 

Grinding the ends of compression springs:

• Provides flat and stable seating

• Improves load distribution

• Enhances safety and lifespan of the spring in dynamic applications