Custom Springs for Fire Dampers

John Evans’ Sons has specialized in spring innovation and manufacturing since the days of horse-drawn buggies, producing reliable, powerful springs and spring-based assemblies for industries as varied as medical devices, aerospace, robotics, and window manufacturing. Our extensive in-house capabilities include the production of numerous types of springs as well as customized solutions to meet our […]

Benefits of Working with a Custom Spring Manufacturer

For engineers designing new products, procuring specialized components for the device remains a consistent hurdle. Numerous industries, from automotive and aerospace to medical and construction, need custom-made springs for specialized applications. Stock springs can be ideal for short-turn-around times, but they aren’t made to suit your device’s specifications. To this end, a custom spring manufacturer […]

Spring Materials: Which is Best for Your Application?

Springs are manufactured with different materials and finishes based on factors such as application, project requirements, and operating environments. Spring quality is crucial, and material or finish can have an impact on performance. With so many materials on the market, here is what you need to know about choosing the best spring materials for your […]

Constant Force Springs Mounting Methods

When you think of a spring, what first comes to mind is probably a helically wound spring consisting of a coiled wire of a given diameter. Constant force springs look a little different in that they typically consist of flat metal strips that have been pre-tensioned. Manufacturers can coil constant force springs with the same […]

John Evans’ Sons’ Design Goes To Mars!

NASA LAUNCHES MARS 2020 PERSEVERANCE ROVER JULY 30 Our Engineering Dept. & Sales Dept. have worked with NASA’s Jet Propulsion Laboratory since September 2018 on this design. The springs were created in our Constant Force Dept. Perseverance will cruise through space for nearly seven months, aiming to land in Mars’s Jezero crater on February 18, 2021. Physical facts: 2,260 […]

Reducing Vibration with Helical Vibration Isolators

Shock and vibration are common challenges for mechanical and electronic equipment. Conditions like loose components, misaligned shafts, device wear and tear, abrupt machine starts and stops, and imbalance created by heavy loads can cause vibration. Let’s not forget about external factors that can cause vibration, like explosive blasts or extreme weather. Even the smallest shock […]

Constant Force Springs Design Guide

There are many mechanical components to choose from for your device or application when it comes to constant force spring design. If your device requires a spring, consider constant force springs. These are a type of extension spring. They do not obey Hooke’s law, so their force remains constant, even when deflected. Because of their […]

Types of Springs and Common Applications

Since 1850, John Evans’ Sons has manufactured springs for many unique devices and applications. We’ve manufactured suspension components for the Mars Rover Curiosity, counterbalancing mechanisms for M1A1 Abrams Tanks, and more. It’s common for us to manufacture a custom spring assembly for our clients’ proprietary devices, but we also have a selection of stock springs that […]

Considerations When Choosing a Medical Device Spring Manufacturer

Buyers and engineers who are familiar with the RFQ process prioritize cost and lead time when selecting a components manufacturer for their medical device project. While these are important considerations, there are other capabilities you should look for in a manufacturer. These considerations can have a direct effect on project cost and timeline. Here are […]

John Evans’ Sons Announces Products for MD&M West

The medical industry requires products that perform with accuracy and precision. John Evans’ Sons is proud to provide those products to the medical manufacturing community. We’re excited to attend MD&M West, where we will be showcasing constant force springs, spiral torsion springs, and spring reels. Springs are more economical and precise than motors, making them […]