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Grinding & Secondary Operations

Among the most overlooked yet critical aspects of spring design and selection are the secondary operations performed on the spring after the wire is formed into the helical coil.

Precision grinding is one of the most common secondary operations performed on wire form springs. Grinding is most commonly performed on the ends of springs to ensure that the surfaces are smooth and flat at mating surfaces. Additionally, removing material at the spring ends lowers the spring stress at these locations and increases the spring's load capacity. Grinding also produces parts with tight dimensional features, tolerances, and smooth surface finishes, as may be required for certain applications.

In addition to grinding, other secondary finishing operations, such as tumbling, trimming,  chamfering, and buffing, are all additional secondary operations that can improve a spring's dimension flatness and surface finish. Furthermore, additional secondary operation offerings, such as shot peening, plating, and passivation, can add strength and fatigue resistance to your spring, even in the most demanding applications.

Custom Grinding Services

Century Spring offers best-in-class spring manufacturing technologies, bringing precision and quality to all aspects of spring design. These capabilities enable us to deliver durable, reliable products across many custom sizes and styles.

Specifically, we offer many custom grind profile options and allow you to specify and shop by parameter, such as the squareness of the spring, surface roughness, and/or your desired grind amount (e.g., 75% of the circumference). Precision grinding is a typical secondary process on compression and tapered spring ends. End grinding allows them to sit squarely on the application’s load-bearing surface, increasing the spring's stability under load. Improving the spring’s stability in application increases the operational life.

We also offer many other customizable secondary operations, such as buffing and tumbling across our spring and wire form product catalogs. You can gain a sense of available secondary operations by shopping our stock spring catalog:

Industries Served

Your design application determines the type of secondary processes required. Regardless of the application, we have a secondary operation to enhance and optimize your spring performance in the most demanding loading and environments.

For example, many automotive and aerospace components, such as engine valves and suspension springs, feature springs with precision ground ends. Ground-end springs are also used in medical devices such as orthopedic implants and surgical instruments. In such applications, the ground ends provide excellent contact with mating components.

Additionally, these applications routinely employ surface treatments such as shot peening and passivation, which can add corrosion resistance and increase your spring’s fatigue life under cyclic loading conditions.

For more information on application-specific springs and secondary operations, check out our Industry Pages:

Why Choose Century Spring

Our Commitment to Quality and Service

 

Manufacturing

Century Spring is a quality-first, ISO 9001 and AS9100D certified, industry-leading spring supplier specializing in stock and custom springs. We are the most trusted name in spring manufacturing, offering products and expertise to serve all secondary processing needs, including CNC grinding services.

Our dedicated custom spring development and customer support teams help you navigate critical design criteria such as size, material, surface finish, and end type to find your application's optimal spring solution.

Our experienced product engineers, knowledgeable product quality team, and skilled manufacturing personnel always deliver the highest quality products to you faster than our domestic and international competitors. Our springs are always made in the USA.

We offer rapid delivery on over 40,000+ in-stock designs available to ship today. We are committed to getting products to you as quickly as possible because we understand your design scheduling constraints.

Visit us today to discover how our commitment to quality and customer satisfaction vastly improves your product design process! 

What Our Customers Are Saying

“Terrific customer service agents who are willing to research and find the answer if they don't know. Nice email updates and quick product delivery.”

Scott Merrill, Precision Designs

“I am surprised that a big company like yours would work with us little guys. And Thank You because we don't have another source for springs.”

Darrel Toombs, D & D Auto Parts

“The website works really well, that is very important to me to find what I need quickly and accurately.”

Andy Olsen, SAM Medical

Get In Touch

Contact Information

 

Contact Us directly today, and let our experts resolve all your technical and sales questions. We can also guide you through all our available secondary operations for each spring type and material.

If you need immediate assistance, you can always speak directly with our team on our dedicated customer service line at 800-237-5225.

Request a Quote


We can also help you evaluate custom secondary operations and determine whether a custom spring design better suits your application. 

Simply Request a Custom Quotation so we can partner with you to customize a spring design for your unique application.

Once we hear from you, our design team will follow up with a quote for a custom solution and be happy to answer any follow-up questions you may have. 

Ready to Get Started?

Click the button below to request a quote and start your journey with Century Spring.