OD 14mm ID 7mm Compression Spring Mould Die Spring Light Heavy Duty Spring Steel

Match the duty rating to your required spring force and deflection. TF Yellow (Extra Light) suits low-load, high-travel applications. TL Blue (Light) and TM Red (Medium) cover general tooling and moderate loads. TH Green (Heavy) and TB Brown (Super Heavy) are for high-force clamping, stripping, or guide applications. If you know your required load at a specific deflection, compare it against the spring rate for each grade at your chosen free length.

Select a free length that gives you the required working stroke plus a safety margin — typically the free length should be at least 1.5× your maximum deflection. For example, if your tool requires 30 mm of travel, a 50 mm or 60 mm free length spring is a conservative starting point. Always verify against the spring's maximum deflection specification for the chosen duty grade.

Yes. These compression die springs follow ISO 10243 die spring conventions for OD 14 mm / ID 7 mm, making them dimensionally compatible with standard mould and die tooling designed to that specification. Always confirm the duty grade colour code matches your original spring before substituting.

Yes. OD 14 mm / ID 7 mm die springs are commonly used as stripper plate return springs, ejector plate springs, and core pull springs in injection mould tooling. Select the duty grade based on the clamping or stripping force required by your mould design.

These springs are manufactured from spring steel. Spring steel offers good mechanical properties for cyclic loading but has moderate corrosion resistance. For environments with moisture, coolant exposure, or chemical contact, consider applying a light oil coating for storage and use, or contact us to confirm if a surface-treated variant is available for your application.

Order 1 pc if you need a single replacement spring or are prototyping a new tool design. The 4-pack is cost-effective for production tooling where multiple springs of the same spec are installed symmetrically (e.g., four corners of a stripper plate), or for stocking a spare set alongside installed springs.

A die spring is a type of compression spring specifically engineered to tighter dimensional tolerances, higher load capacities per unit length, and greater fatigue life than standard compression springs. Die springs are wound with rectangular or square wire cross-sections (in many grades) to maximise the amount of material in the coil, resulting in higher spring rates and longer service life under repeated cycling — making them the preferred choice for mould and stamping tooling.

Yes. The consistent OD/ID dimensions and colour-coded duty grades make these die springs suitable for robotic end-effectors, linear actuators, compliant mechanisms, and fixture clamping systems where a predictable spring force is required. Select the duty grade and free length that matches your required preload and working stroke.