Compression vs. Torsion vs. Tension Springs: How to Choose the Right Type for Your Application

Every spring does one of three jobs: it pushes, it pulls, or it twists. Picking the wrong one rarely shows up on the drawing — it shows up months later as a mechanism that binds, a part that fatigues early, or an assembly that never quite holds its position. Here's how to tell which type your application actually needs.

THREE SPRING TYPES, THREE JOBS

• Compression springs. Store energy when squeezed and push back to resist or absorb a closing force. Common in suspensions, valves, mattresses, and switch mechanisms — anywhere two surfaces need to be held apart or a load needs cushioning.
• Tension (extension) springs. Store energy when stretched and pull back to resist a separating force. Built with hooks or loops at each end, they're used in trampolines, garage doors, retractable mechanisms, and toggle assemblies.
• Torsion springs. Store energy when twisted around their axis and exert a rotational (torque) force. Found in hinges, clothespins, counterbalance mechanisms, and clipboard-style clamps — anywhere a part needs to rotate back to position.

HOW TO CHOOSE THE RIGHT TYPE

• Direction of force. Start with the motion you need to resist — being pushed together, pulled apart, or rotated — before looking at wire size or material.
• Space constraints. Compression springs need axial clearance to fully close; torsion springs need radial clearance to swing their legs without interference.
• Cyclic life requirements. High-cycle applications (like automotive or consumer electronics) need the spring type and material matched to expected fatigue life, not just static load.
• End configuration. Tension and torsion springs need hooks, loops, or legs designed to interface with your specific assembly — this is often where off-the-shelf options fall short.

WHY THIS MATTERS

The cost of a wrong spring type is rarely the part itself — it's the redesign cycle, the delayed launch, and the field failures that follow. Sending us your motion requirement alongside the drawing lets our engineering team confirm you're specifying the right type before tooling is cut.

Published by the Seyunda Team · 2026