Compression Spring Various Size 6-12mm Outer Dia & 10-50mm Length Pressure Large

Measure the bore or spring seat inner diameter in your assembly — the spring OD should be 0.5–1mm smaller than the bore for a sliding fit, or match the guide rod OD plus clearance. For free length, select a spring that is 20–30% longer than your desired compressed working length to ensure adequate preload and travel.

Spring rate depends on wire diameter, outer diameter, free length, and number of active coils. Because this listing spans multiple size combinations, the spring rate varies by variant. If you need a specific rate (N/mm or lbf/in), please contact us with your size selection and we can provide guidance.

These springs are made from uncoated spring steel, which provides good mechanical performance but limited corrosion resistance in wet or humid environments. For outdoor or high-moisture applications, consider applying a light coat of machine oil or selecting stainless steel springs for your project.

Maximum load capacity varies by size variant (OD and free length). Larger OD and shorter free length combinations generally yield higher spring rates and load capacities. For load-critical applications, contact us with your specific variant selection and operating deflection for a load estimate.

Yes. The 6–12mm OD range covers the most common spring seat sizes found in FDM extruder assemblies, CNC tool holders, and linear motion preload mechanisms. Select the OD that matches your spring pocket and a free length that provides the desired preload at your working compression depth.

These compression springs are well-suited for light-duty robotics applications such as end-effector compliance, gripper return mechanisms, and joint preloading. For high-cycle or precision force-control applications, verify the spring rate and fatigue life against your cycle count requirements before committing to a design.

All three pack sizes contain identical springs of the selected size variant — the only difference is quantity. The 10-piece pack is ideal for prototyping or single-machine repairs. The 30-piece pack suits small production runs or maintenance kits. The 50-piece pack offers the best per-unit value for larger builds or stocking spare parts.