DieMax XL™ Medium Duty Die Spring 37.5% Deflection

This medium-duty die spring is used in inch-based injection and forming tooling where controlled cushioning is needed during opening/closing, ejector travel, or press die return. Its 37.5% deflection design helps maintain more consistent load characteristics as stroke conditions change.

• Automotive and industrial forming tooling: supports die segments and helps absorb impact energy, reducing vibration transfer to locating components.
• Die cushioning in press systems: the medium duty rating balances deflection and load stability for repeat cycles, helping protect critical surfaces from shock loading.
• General industrial mechanisms: when vibration damping and dependable compression/tension support are required, the chrome silicon spring construction supports fatigue resistance under duty cycles.

The chrome silicon variant is suited for these applications because it is engineered to resist fatigue degradation while providing stable cushioning behavior across the operating deflection range.

This spring uses chrome silicon spring steel (Chrome Silicon) selected for reliable fatigue resistance in cyclic compression and tension. Chrome silicon grades are commonly chosen for their ability to maintain spring force stability and resist loss of temper under repeated loading.

For performance, the steel is typically manufactured through bar/coil forming followed by a heat treatment such as quenching and tempering to achieve the required spring hardness and elasticity. Exact hardness values are not provided in the available data; in practice, die spring specifications often target high hardness with a controlled temper to balance wear resistance and toughness.

• Wear resistance: good for resisting surface damage under normal tooling contact conditions.
• Toughness trade-off: higher hardness improves fatigue life, while excessive hardness without proper temper can reduce toughness.
• Alternatives: compared with lower-alloy or carbon spring steels, chrome silicon generally offers stronger spring-force retention and better fatigue performance for medium-duty vibration damping.

Correct dimensioning is critical to achieve the intended spring force at the working deflection. Use the provided ranges to match the spring to your die cushioning or return stack-up: Outer Diameter (D) = 1 ~ 5 in, Length (L) = 1 ~ 12 in, and Inner Diameter (d) = 1 ~ 11 in.

• Match outer diameter (D): verify the OD clears surrounding die hardware and doesn’t interfere with guide elements or pockets.
• Match inner diameter (d): ensure d provides clearance over shafts/locators and maintains alignment in the die assembly.
• Match free/installed length (L): select L based on available cavity/core space and the required compressed or tensioned position in the assembly.

Because tolerances are not specified in the provided data, engineers should confirm fit by reviewing end-seat contact and alignment requirements for the die. When selecting, consider the working deflection target (not just physical fit) to keep load characteristics within the die’s design window.