Inch Round Wire Die Spring 30% Deflection

This die spring variant is used inside injection molding and forming tooling assemblies where a controlled return force is required. In automotive connector or terminal production, it can support stable die actuation by providing predictable compliance, helping the tool return repeatably over long production runs.

• Wire forming and die applications: The 30% allowable deflection ratio is suited for cycles where consistent force across travel is more critical than maximum stiffness.
• Die return systems: Inch configuration matches common die spring housings, simplifying installation and tuning for die rebound behavior.
• Heavy-load tooling: Round wire construction helps maintain predictable spring response under load, supporting uniform forming geometry.

Its inch sizing and specified 30% deflection behavior make it a practical choice when die components must maintain alignment and return-to-position accuracy across repeated shots.

The provided data specifies dimension and deflection performance (30% allowable deflection) but does not list the steel grade, hardness (HRC), heat-treatment state, or surface treatment. Therefore, material-specific claims such as “quenched and tempered to X HRC” or “nitrided for wear resistance” cannot be stated from the current metadata.

For die spring applications, engineers typically select alloy spring steels and apply heat treatment to balance wear resistance and toughness. In general, higher strength grades offer better resistance to load-related deformation but may reduce toughness if improperly tempered.

• Available variant comparison: Only the geometric configurations (D, d, L) and the 30% deflection criterion are confirmed here; material grade options are not included in the input specifications.
• Heat treatment: Not specified in the provided product information.

Use the listed geometry ranges to match the spring to the die housing and working space. Start with the outer diameter (D): choose from 3/8", 1/2", or 5/8" to fit the spring cavity or pocket without interference.

• Check inner diameter (d): select 3/16", 9/32", or 11/32" to clear the guide rod or central tooling features.
• Select installed working length (L): choose L = 1 to 12 in based on the available stack height and the required free-to-loaded travel.

Because the spring is rated for an allowable deflection ratio of 30%, confirm that the expected deflection during cycling remains within that limit for stable force behavior. Tolerance and fit guidance (e.g., recommended running clearance) is not provided in the input data; if your die includes a specific clearance requirement, verify fit against your housing dimensions and any assembly drawings from your supplier.