Compression Springs

Compression springs are open-coil helical springs that contain the highest potential energy when the component is compressed. They are used to resist applied compression forces or to store energy in push mode. As one of the most common spring configurations used by manufacturers for enhanced functionality, compression springs appear in a variety of industries including automotive, aerospace, general industrial, medical, and technology.

MW Components specializes in the design and production of custom and stock compression springs of multiple sizes and configurations. Our production capabilities are unmatched, ensuring multiple lengths, end and pitch configurations, materials, applied finishes, and optional certifications. We also stock many standard sizes (like 316 stainless steel springs), allowing us to offer same-day shipping for many products.

CADs for stock and standard compression springs are available in MW OnDemand.

Availability

Custom Yes Request a Quote
Stock & Standard Yes View Compression Springs
Helical compression spring illustration

Custom Compression Springs

We produce both standard and stock compression springs as well as custom sizes and styles, including variable pitch springs, among others.

MW’s capabilities are not limited to manufacturing. Our production and engineering experts will work with your team to design and produce the components you need using all of the tools at our disposal, including state-of-the-art software, specialized equipment, and a team of subject matter experts. We even offer prototyping and tooling assistance. No matter where you are in the design or production process, we have the knowledge, experience, and tools to bring your project to life.

Ready to get started? Request a quote.

Compression Spring Manufacturing

Compression springs are the most widely used spring category, found in many of the products you use every day, from electronics, pens, notebooks, and mattresses to industrial equipment, tools, and medical devices. They are designed to oppose compression and return to the uncompressed length when the applied force is eliminated, making their uses and application opportunities endless.

As a leading compression spring manufacturer, our springs are made on state-of-the-art CNC compression coiling equipment that uses vision and laser statistical process control systems to sort and adjust the free length. By investing in high-end coiling equipment, we are able to improve the compression spring quality and ensure that fewer springs are rejected for not meeting specifications.

After the coiling process, the compression spring has to be hardened or heat-treated to allow the steel to maintain its resilience. Our facilities have stress-relieving ovens for hot or cold wound springs which meet all national heat-treating standards.

Group of large compression springs

Century Spring: Stock Compression Springs

Our Century Spring location provides online ordering for stock compression springs, many of which are available for same-day shipping. We also offer standard and custom compression springs that can be tailored to fit your application. Explore our inventory and buy stock springs now, or contact us for a quote on a custom spring.

Buy Compression Springs Online
Century Spring logo

Materials

Compression springs can be manufactured from a variety of materials, though predominantly from carbon and stainless steels. Choosing the correct metal alloy for your application can involve a number of factors from ambient temperatures, corrosive environments, and even the normal weather patterns where the springs will be used.

Material

  • Carbon Steel
  • Chrome Silicon
  • Hastelloy®
  • Inconel®
  • Monel
  • Music Wire
  • Stainless Steels

Finishes

Our compression springs can be manufactured with a selection of commonly requested or specialty finishes and processes. Finishing processes may include grinding, shot peening, and heat setting. Finishes may include

Finish

  • Black Oxide
  • Passivation
  • Powder Coating & Color Coding
  • Rubber
  • Plating (Zinc, Nickel, Silver, Tin & Gold Electroplating)

Wire Types

Depending on the size of the material necessary to produce your solution, MW Components has the ability to manufacture helical compression springs from cold-coiled wire or hot-wound bar stock.

We can also configure your springs in either a left or right wind configuration to suit your specific application.

Wire Type & Diameter

  • Cold Coiled: 0.002″ – 0.75″
  • Hot Wound: 0.625″ – 3.00″

Ends

MW produces custom and stock compression springs with the below end types and can make recommendations based on your specific application.

Ends

  • Closed
  • Closed and Ground
  • Open

Compression Spring Applications

Compression springs are the most widely used spring category, found in many of the products you use every day, from electronics, pens, notebooks, and mattresses to industrial equipment, tools, and medical devices. They are designed to oppose compression and return to the uncompressed length when the applied force is eliminated, making their uses and application opportunities endless.

  • Electronics
  • Industrial Equipment
  • Tools
  • Medical Devices
  • Mattresses
  • Spiral-Bound Notebooks

Dimensions Measurement Guide

  1. Hold the base of the spring in one hand, and the calipers in the other hand.
  2. Place the calipers on the outside of the last coil, measuring the largest dimension. This is called the Outside Diameter (O.D.).
  3. Place the calipers on the wire in the center of the spring. This is called the Wire or Material Size. You should also measure the wire toward one end for comparison and accuracy.
  4. Place the calipers on the full length of the uncompressed spring. This is called Free Length.
  5. Count the total coils, beginning at one end, just next to where the wire has been cut. Be sure you count all coils, including any portion of a coil. (see diagram for example)
Compression spring dimension guide

Compression Spring Service Life

If critical force-versus-deflection linearity is required, only the center 60-80% of the available deflection range should be employed. Thus, reserve at least the first and last 15-20% of the range for potential spring-end and adjacent coil-contact effects. These effects can be largely ignored for the majority of spring applications.

The “Suggest Maximum Deflection” used in some areas of our part documentation, including our Century Spring catalog, reflects the recommended inches of travel to obtain a statistical service-life of approximately 100,000 cycles(deflections) with infrequent breakage. This can be realized if the spring in question is not subjected to shock loads, rapid cycling, temperature extremes, corrosion, or stress values above those recommended. If the spring is statically loaded (not cycling), a near-infinite life can be expected. Extended spring service life can be achieved through shot-peening. For custom compression springs, our expert engineering team can provide additional support.

Need a Large Order?

We can design and manufacture a component for your specific application in any quantity. For quantities over 1,000, please request a quote.

Request a Quote
Consumer products component manufacturing