Engineers also need to consider the conditions that a spring will be operating under when it is fitted to a final product. Read More…
Leading Manufacturers
R & L Spring Company
Lake Geneva, WI | 262-249-7854R&L Spring Company manufactures custom spring and wire formed components for industries such as powersports, automotive, medical devices, and general industrial. Products include compression, extension, and torsion springs, as well as rings, wire forms, fourslide components, and long coils. Wire diameters available from .001" to .750" in both shaped wires and flat stocks. Their experienced team is able to meet the most demanding parts specifications. IATF16949 and ISO9001 certified.

All-Rite Spring Company
Spring Grove, IL | 815-675-1350All-Rite Spring Company specializes in quick-turn design, prototype, and manufacture of springs and wires of all shapes, sizes, and material types. Typical applications are: Automotive, Agricultural, Consumer Appliance, Industrial, Safety Critical, and other High Functional Value and/or Life Cycle.

Apex Spring & Stamping Corporation
Grand Rapids, MI | 616-591-9524Apex Spring & Stamping is a certified minority owned company that manufacturers springs, stampings, wire forms, clips, and fasteners. Our core industries include automotive, office furniture, medical, recreational, consumer goods, and appliances. We also specialize in value added assembly and prototyping. Our engineering team will ensure your part is both functional and cost-effective. IATF 16949 Certified.

Coiling Technologies, Inc.
Houston, TX | 713-849-4000Coiling Technologies, Inc. has the experience and expertise to design and engineer the custom springs to meet your specific requirements. We are a leading manufacturer of high-tech, specialized springs and we are committed to providing quality products with fast lead times. Our automated process allows us to produce the reliable springs you need.

Sterling Spring Corp.
Chicago, IL | 800-969-7884Sterling Spring has offered high-quality springs since 1953. Our product line includes compression springs, coil springs, torsion springs, extension springs and industrial springs. We offer just-in-time delivery and cost-effective prices, regardless of your ordering volume.

Diamond Wire Spring Company
Glenshaw, PA | 412-684-1201Diamond Wire Spring Company is a designer and manufacturer of precision springs. We have over 75 years of experience in stock and custom springs. Our founding principles of providing quality products and strong, personalized customer service help us earn the trust of our customers. We have more than 11,000 different springs available. We serve many industries including power and energy, agriculture and rail, and many others. Call us today!

Pa-Ted Spring Co., LLC
Bristol, CT | 860-582-6368Our springs are made of a variety of materials and can be used in many different applications. Pa-Ted manufactures custom designed springs for the automotive, electrical, medical, landscaping, pool covers, and original equipment manufacturers industries, and uses materials such steel, beryllium copper, music wire, brass, titanium, tungsten wire, oil tempered wire, and resistance wire. Call us for wire forms today!

If the spring is located in the engine bay of a car, it may be exposed to dirt and a wide range of temperatures. If the spring is installed on a trampoline, it needs to be able to bear the impact of repeated jumping. Variables like this will be determining factors when considering the kinds of material, configuration, and size for the spring design.
When designing a spring, engineers also have to consider the production tools that will be available and the scale of manufacturing in the production plant. Materials need to be chosen not only for their durability but also for their cost effectiveness. When a custom spring is designed, manufacturers will typically create one or several prototypes to make sure that their factory equipment is being used efficiently and to have a working model that can be tested in a final product.
Once all of the kinks in the production process are worked out, the custom spring is created in whatever quantity has been ordered. Obviously the cost goes down if a large number of springs are produced, and manufacturers will have a minimum number that have to be ordered to make production profitable from a business standpoint.
Before spring design can begin, engineers must be supplied with the specifications for the project and an assembly drawing to show them how the spring will be used with other components. This tells them what role the functionality of the spring plays and what size constraints they will have to design it to work under.
The diameter of these springs could vary greatly depending on the application, from as small as 1mm to as large as several inches. If a jewelry company is going to release a new lineup of wrist watches, for example, they will require extremely tiny springs that can fit within a watch's small body.