Heavy Load Urethane Pillar Springs Through Hole

These heavy-load urethane pillar springs are designed for injection molding and forming tooling where repeatable compression under high cycle loads is critical. The through-hole pillar layout is ideal for secure mounting through die or press plates, helping maintain pillar alignment during long-term operation.

In automotive connector and housing molds, they can be used as part of die cushioning or spacing systems that must resist drift over thousands of cycles. The AX/CX urethane formulation with Shore A90 supports stable deflection control, improving consistency of clamp height and pack behavior.

For packaging and consumer product molding lines running at elevated frequency, the solid pillar geometry supports uniform compression and reduces variability between cycles. Their heavy-load capability makes them suitable for repetitive, high-load operations where metal springs may contribute to noise or require tighter mechanical alignment.

• Die cushions / press plate spacing for controlled motion under load
• Injection molding sub-systems needing predictable deflection response

This product uses an AX/CX urethane pillar spring formulation designed for heavy-load performance with a specified Shore A90 support level. Urethane elastomers provide high resilience and controlled deflection, which is valuable when tooling motion must remain consistent across repeated compression cycles.

Unlike hardened steels, urethane pillar springs do not undergo quenching, tempering, or nitriding. Instead, the manufacturing process relies on polymer formulation and controlled molding/casting of the pillar shape to achieve stable stiffness and dimensional reliability.

• Hardness (Shore A90): balances stiffness for load-bearing with elastomer toughness to sustain compression cycles.
• Wear resistance trade-off: higher hardness generally improves resistance to deformation, while maintaining enough elasticity to avoid brittle cracking.
• AX/CX options: select between material variants to better match your stiffness and cycle requirement profile.

Correct sizing starts with matching the pillar’s outer diameter (D) and length (L) to the mechanical space and required compression travel in your mold assembly. Use the provided ranges: D = 8 to 100 mm and L = 10 to 200 mm.

For a through-hole mounting, ensure the die/press plate design includes a compatible through opening (Hole/Counterbore is specified as Hole). Choose D so the pillar fits the intended guide or mounting bore without excessive clearance that could increase misalignment.

• Length (L): set to cover the full stacked height between opposing tooling surfaces at your target compression condition.
• Outer diameter (D): match to surrounding pocket/guide constraints while preserving assembly clearance.
• Tolerance & fit: because the urethane pillar is elastomeric, small variations typically affect compression behavior more than rigid fit; confirm that the cavity around D supports stable alignment during load.

If you need specific stiffness, select the appropriate AX/CX urethane variant while keeping D and L within the stated limits.