Inch Medium Heavy Duty Die Spring 35% Deflection Chrome Silicon

Die springs in inch-format injection and stamping tooling are used to cushion the press and maintain stable shut height under repeated cycles. This 35% allowable-deflection spring is well suited for medium-load die cushioning, where consistent load response is critical for part repeatability.

• Automotive component tooling: Helps absorb small variations in die closure force during forming or insert placement, reducing shock loads and promoting uniform operation.
• Industrial housing and bracket dies: The medium heavy duty spring rate supports controlled cushioning, helping maintain reliable press conditions over long production runs.
• High-mix production dies with frequent changeovers: The optimized 35% deflection allowance supports predictable spring behavior within its design stroke range.

Chrome silicon steel is chosen for resilience, making this variant a practical option where durability and stable cushioning are required in inch die spring assemblies.

This die spring uses chrome silicon steel, a spring alloy commonly selected for its strong elastic recovery and good fatigue resistance in cyclic press applications. The key performance goal is reliable load response while resisting permanent set under repeated compression.

• Hardness / wear resistance: While exact HRC is not provided in the supplied specification, chrome silicon die spring steels are typically specified for a hardness state that supports high fatigue life and adequate surface wear resistance.
• Toughness trade-off: Increasing hardness improves resistance to deformation, but can reduce toughness; the intended “medium heavy duty” behavior is balanced to maintain cushioning stability within the 35% allowable deflection.
• Heat treatment: Spring alloys like this are generally quenched and tempered to achieve the required spring temper and dimensional stability.

If you are comparing alternatives, steels optimized for maximum hardness may offer higher wear resistance but can be more sensitive to shock; chrome silicon is commonly selected for its overall fatigue-resilience balance.

Select the die spring dimensions to match the available space in your inch die spring assembly while staying within the spring’s designed deflection capability.

• Outer diameter (D): Choose from 1 ~ 5 in to fit the surrounding guide/seat clearance and prevent interference during compression.
• Length (L): Select 1 ~ 12 in based on installed height and the available free length in the mold/die stack.
• Max. compressed length: Verify the 0.5 ~ 6.94 in max. comp. length against your required closed-die position to ensure you do not exceed allowable stroke.
• Rod diameter: For assemblies using a rod/guide, confirm 1 ~ 11 in rod diameter compatibility with your guide hardware.

Because tolerances are not specified here, finalize by checking fit-up drawings for seat/guides and confirming that your planned deflection remains within the 35% allowable deflection design intent for predictable cushioning.