Heavy Load Urethane Pillars (AEX, CEX Series)

Heavy load urethane pillars in the AEX/CEX range are used in injection mold and press tool builds where a controlled “spring back” is required without metal spring fatigue. The pillar geometry supports straight-line guidance and stable load transfer, helping maintain repeatable positioning of the associated moving components.

• Automotive fixture and die stations: Select these pillars to stabilize heavy clamping or die-set movements where deflection consistency over time is critical. Shore A90 urethane supports demanding load levels while keeping behavior predictable across varying assembly layouts.
• Packaging and thin-wall molding tooling: Use configured pillar springs to maintain alignment for ejector-related or moving sub-plates, reducing misalignment risk during cycling.
• Assembly layouts with through-hole or solid mounting: The available hole/counterbore option (including “Hole” or “None”) allows integration into both through-hole and solid mount designs, improving fit with existing mold base machining.

These urethane pillar springs are manufactured from Shore A90 urethane, selected for heavy-load support and stable deflection behavior. The higher Shore A durometer improves load-bearing capability and wear resistance compared with softer urethane grades, while reducing elastic travel for a given geometry.

• Hardness / property target: Shore A90 provides a balance of stiffness and resilience for demanding die and press applications.
• Wear and toughness trade-off: As durometer increases, the material typically becomes less deformable (lower damping and deflection range) but better resists flattening under sustained load.
• Heat treatment: No metal heat-treatment steps (e.g., quench & temper, nitriding) are specified for this urethane variant; performance is achieved through the urethane compound formulation and molding process.

To select the correct urethane pillar dimensions, match the pillar length (L) and outer diameter (D) to the stroke/clearance and load path in your mold tooling. This series supports L = 10–200 mm and D = 8–60 mm, enabling installation across compact and long-support applications.

• Match length to stack-up: Choose L so the pillar supports the required separation and remains within the desired compression range across the tool’s operating cycle.
• Match diameter to load distribution: Select D based on the contact/guide area and expected load level to keep deflection stable.
• Consider mounting feature: The hole/counterbore parameter is configurable as Hole or None. Ensure your mold base machining aligns with the chosen mounting method.
• Tolerance/fit: Follow the supplier’s intended fit between the pillar and the mounting interface; choose the mounting option (hole vs. none) that best maintains positional stability in your assembly.