What is the Difference between Torsion & Extension Springs?

The most common type of helical coil spring is a compression spring.  In a compression spring, increasing load reduces the height of the spring.  The spring releases this absorbed energy as it returns to its free length. There are two other types of important helical coil spring types that help in other mechanical situations.  These

Types of Coil Spring Ends

When it comes to buying coil springs, whether for automotive suspensions, or a more industrial application, not all coils are the same. Aside from how coil springs are made (hot or cold wound) the other important factor to consider is what type of end your coil will have. There are four main types of coil ends, close

How Coil Springs Are Made

Springs come in a wide variety of sizes and configurations depending on their desired use.  Some of the types of springs include leaf springs, Belleville washer springs, clock springs, constant force springs, and helical coil springs.  Duer/Carolina Coil specializes in manufacturing helical coil springs from high-quality U.S. steels. The most common types of coil springs

Not All Automotive Springs are the Same

Duer/Carolina Coil has over 120 years experience making coil springs for industrial, agricultural, valve and suspension applications. Over the last 20 years, Duer/Carolina Coil has made heavy duty coil springs for a variety of military vehicles. Duer/Carolina Coil’s coil springs have been on HUMVEEs, MTVRs, MRAPs and a variety of emergency transport vehicles. We are