Precision-Cast Formathane Urethane Rods (Metric)

Precision-cast urethane rods are used as spring-like cushion elements inside injection mold tooling wherever controlled deflection and vibration damping are required. In automotive connector and housing molds, these rods can support ejection systems and assist in maintaining stable, repeatable motion under intermittent mechanical shock.

• Load-matched cushioning: very high load (PO-652 Tan) and high load (CU-290 Yellow) variants help resist impact while limiting rebound.
• Low rebound behavior: very low load (PO-670 Black) can be selected when softer support is needed for finer components and gentler cycling.

For medical device part molds and precision covers, urethane rod cushioning helps reduce transmitted vibration to reduce chatter and improve consistency during cycling. The pillar-style form and urethane formulations support controlled deflection, making the metric rod stock practical for equipment protection and long service life when loads vary across production runs.

These Formathane urethane rods are made from cast urethane formulations selected by urethane type to tune load capacity and damping behavior: PO-652 (Very high load, Tan), CU-290 (High load, Yellow), PO-650 (Medium load, Red), and PO-670 (Very low load, Black). The material approach is formulation-driven—different grades target controlled deflection and low rebound characteristics rather than relying on steel heat treatment.

• Heat treatment: no steel quench/temper or nitriding is specified; the rods are precision-cast to achieve the required geometry and performance.
• Hardness & trade-offs: higher-load grades generally provide greater stiffness and wear resistance under heavy cycling, while very-low-load grades prioritize softer support and sensitive cushioning.
• Manufacturing process: precision casting of metric rod stock enables consistent pillar-style profiles for repeatable installation and predictable compression behavior.

Select the rod dimensions by matching the required cushioning stroke and bearing area to the rod’s outside diameter and length. The available metric lengths are L = 500 mm or L = 1000 mm, and the outside diameter range is 8 ~ 100 mm.

• Diameter selection: use smaller diameters within 8 ~ 100 mm for lower effective stiffness, and larger diameters for higher load-bearing support.
• Length selection: choose 500 mm or 1000 mm based on the required axial coverage or cutting allowances for your spring support function.
• Grade alignment: pair the load requirement with urethane type—PO-652 (Very high load), CU-290 (High load), PO-650 (Medium load), or PO-670 (Very low load).

For proper fit, confirm that the rod outside diameter will fit the available tooling envelope and that installation features allow for controlled deflection. Tolerance values are not provided in the dataset, so use your supplier drawing/inspection report for final clearance checks.