Mould Springs Compression Spring Light/Medium/Heavy Loading Length 25mm~175mm

Match the color to your required spring force: Yellow-TF for the lightest loads (smaller loading), Blue-TL for light loading, Red-TM for medium loading, Green-TH for heavy loading, and Brown-TB for super heavy loading. Consult your mold or die design specification for the required spring force at working deflection, then select the color that meets that requirement at your chosen free length.

Select a free length that, when compressed to your working stroke, stays within the spring's rated deflection range (typically 20–40% of free length for mould springs). Measure your spring pocket depth and add your required working stroke to determine the minimum free length needed. Available lengths run from 25 mm to 175 mm in this listing.

All springs in this listing have a standardized 22 mm outer diameter (~0.87 in), designed to fit standard 22 mm OD spring pockets used in injection molds and stamping dies. If your pocket is a different diameter, please contact us to confirm compatibility before ordering.

Yes. The 22 mm OD is a widely used standard dimension in injection mold and progressive die design. These springs are intended as direct replacements or new installations in pockets machined to this standard. Always verify your pocket diameter and depth against the spring's OD and selected free length before installation.

These mould springs are suitable for typical toolroom and production environments. For applications involving coolant exposure, high humidity, or chemical contact, contact us to confirm the material specification meets your environmental requirements before ordering.

Yes. Mould springs with a 22 mm OD are commonly used in both injection molds (for stripper plate and ejector return) and stamping/progressive dies (for lifters, strippers, and punch return). Select the load rating and free length appropriate for your specific die or mold design requirements.

Multi-cavity molds and multi-station dies typically require multiple springs of the same specification. Ordering a 3-pack or 5-pack reduces per-unit cost and ensures you have matched springs on hand for balanced loading across all cavities or stations. It also provides spares for maintenance without a separate reorder.