Custom Spring Engineering & Manufacturing

Building life-saving medical technology requires quality precision springs.

With years of experience and outstanding service, John Evans’ Sons is a world class manufacturing partner for the aerospace industry.

John Evans’ Sons manufactures custom components and provides standard springs for military contractors, OEMs, and the Department of Defense.

As the world leader in constant force spring technology,John Evans’ Sons (est. 1850) has produced well over 100 million high performance window balance products.

John Evans’ is a custom manufacturer of constant force brush spring assemblies and spiral torsion brush springs for various size electric motors.

From life-saving robotic assisted surgical platforms to automated industrial assembly to un-manned interplanetary exploration, robotics technology requires quality precision springs.

John Evans’ Sons offers both constant force and variable force springs to optimize the customer experience with your display design.

John Evans’ boasts over 50 years’ experience producing spiral and helical torsion springs.

For over 30 years, John Evans’ Sons has been the leader in spring reel elevator door technology.

High-quality components are important to keep HVAC equipment like blowers, heat exchangers, dampers secured and functional.