Inch Standard Chrome Silicon Medium Duty Die Spring 40% Deflection

This medium-duty coil die spring is used in inch-based injection molding and pressing tooling where a controlled return force and predictable deflection are essential. The 40% deflection setting makes it suitable for stop-and-go motions such as actuation and retraction in stripper systems, slide-related components, and die-set internals that must recover consistently cycle after cycle.

• Automotive and industrial connector housings: In multi-cavity press stations, springs tuned for ~40% allowable deflection help stabilize closure/load characteristics, reducing variability in stripper return and improving dimensional consistency across runs.
• Consumer electronics housings: For thin-walled parts that require precise die-set behavior, the chrome silicon alloy supports reliable elastic response under repeated forming cycles.
• General in-mold ejector/stripper mechanisms: Its medium duty profile is well suited when you need controlled load without the extreme compliance of light-duty springs.

Built from a chrome silicon alloy, this die spring is engineered for high elastic strength and stable performance under repeated loading. Chrome silicon steels are selected for their balance of wear resistance and toughness, supporting reliable force recovery in tooling environments where springs see constant compression and release.

The exact hardness (HRC) and specific heat-treat condition are not provided in the supplied specifications; however, chrome silicon die springs are typically manufactured by forming to size and then undergoing standard spring heat treatment (e.g., quench and temper or equivalent spring tempering) to achieve the required elastic properties and dimensional stability.

• Strength vs. toughness trade-off: Higher hardness generally improves wear and fatigue life, while adequate tempering maintains toughness to resist cracking.
• Wear behavior: Alloying improves resistance to surface degradation from repeated cyclic contact.

Select the spring by matching its key dimensions to the mechanical space and deflection path in your die-set. Use the provided ranges: outer diameter D = 1 ~ 5 in, length L = 1 ~ 12 in, and inner diameter d = 1 ~ 11 in.

1) Confirm the available envelope in the die: the spring OD (D) must fit within surrounding guides and cavities. 2) Ensure the guide/mandrel clearance by verifying the ID (d) clears the mating component with the intended working space. 3) Set the installed free/loaded length so the working compression corresponds to the spring’s intended ~40% allowable deflection ratio, avoiding under- or over-compression.

• Tolerance/fit: The data provided lists dimensional ranges only; confirm the final tolerance requirements with your spring supplier drawing for proper fit and alignment.
• Configurable sizing: D, d, and L are variable within the stated ranges to suit different die designs.