Urethane Springs — Round Type
Cylindrical polyurethane springs in heavy duty, economy, low repulsion, and porous foam grades. Solid, through-hole, counterbore, and configurable-length options. Direct drop-in replacement for metal die springs.
Products in This Category
Heavy Duty Urethane Springs Pillar Shape | Shore A90 | MISUMI | MISUMI
Heavy Duty Urethane Springs with pillar shape for heavy loads (Shore A90). Choose hole or no-hole versions for stable force in tooling assemblies.
Inch Formathane Urethane Rods - Low Repulsion Springs | DANLY IEM | DANLY IEM
Inch Formathane Urethane Rods - Low Repulsion Springs for vibration damping and load cushioning. DANLY IEM urethane supports shock absorption—request a quote.
Heavy Duty Urethane Pillar Springs - A Series, Through Hole | MISUMI Support | MISUMI
Heavy Duty Urethane Pillar Springs - A Series, Through Hole. Shore A90 for heavy loads and up to 25% elongation during use. Contact us to request a quote.
E Series Heavy Duty Urethane Springs - Pillar Type Through Hole | Fast Lead Times | MISUMI
E Series heavy duty urethane springs with pillar shape and through hole design for load-bearing applications. Shore A90 urethane for stable performance. Request a quote.
Formathane Urethane Springs (Inch) Low Repulsion Shock Absorption | DANLY-IEM | DANLY IEM
Formathane urethane springs in inch sizes use low repulsion urethanes for reliable shock absorption and stable elasticity across light to heavy loads. Request a quote.
Heavy Duty Formathane Urethane Springs & Tube Stock (Inch) | DANLY IEM | Shock Absorption | DANLY IEM
Heavy Duty Formathane Urethane Springs & Tube Stock (Inch) by DANLY IEM dampen vibration for reliable shock absorption and stability in industrial tooling. Request a quote.
Formathane Medium Duty Urethane Springs & Tube Stock - Inch | DANLY IEM | DANLY IEM
Formathane Medium Duty Urethane Springs & Tube Stock - Inch for industrial vibration damping and shock absorption. DANLY IEM durability—request a quote.
DANLY IEM Formathane Metric Urethane Pillar Springs | Reliable Shock Absorption | DANLY IEM
Metric Formathane urethane pillar springs by DANLY IEM provide dependable shock absorption by minimizing vibration and impact forces. Contact us for availability.
Inch Marshmellow Die Springs - Urethane Springs for Heavy Loads | Lamina | Lamina
Inch Marshmellow Die Springs from Lamina use shore A90 urethane for heavy loads. Pillar-style support with hole/counterbore helps reduce wear—request a quote.
Precision-Cast Formathane Urethane Rods (Metric) | DANLY IEM | Reliable Cushioning | DANLY IEM
Precision-Cast Formathane Urethane Rods (Metric) by DANLY IEM provide dependable shock absorption for industrial loads. Explore rod stock and cushioning support.
CE/LAE Steel? Heavy-Load Urethane Springs - Pillar Shape Long Type | Economy | MISUMI | MISUMI
Economy Urethane Springs with pillar shape (CE/LAE types) for long loading support. Heavy-load urethane material improves stability under compression.
Porous Urethane Foam for High-Deflection PA Series Pillar Through Hole | Custom Load Range | MISUMI
Porous Urethane Foam for High-Deflection PA Series with pillar shape and through hole design. High-deflection urethane for controlled compression. Request a quote.
Marshmellow Die Springs - Metric Urethane Springs | Lamina | Lamina
Marshmellow Die Springs Metric Urethane Springs for heavy-load mold support. Urethane Springs with Shore A 90, pillar form and counterbore for stable setup.
AZ Type Heavy Duty Urethane Springs Pillars - Counterbore | MISUMI Advantage | MISUMI
AZ type heavy duty urethane springs pillars with counterbore for secure mounting. Built for heavy loads and stable deflection. Request a quote.
AE Type Heavy-Load Urethane Pillars Through Hole | Economy Urethane Rods | MISUMI | MISUMI
AE type heavy-load urethane pillars through hole for molding and industrial fixtures. Shore A90 urethane with a pillar shape for stable support under load. Contact MISUMI.
AN Series Low Repulsion Urethane Pillar Springs (Through Hole) | Fast Lead Times | MISUMI
AN Series low repulsion urethane pillar springs with through hole construction for stable return in tooling. AN type for controlled deflection—request a quote.
AZX Type Heavy Load Urethane Pillar Springs with Counterbore | Fast Lead Times | MISUMI
AZX type heavy load urethane pillar springs with counterbore for stable die return. Shore A90 heavy-duty urethane resists compression set—request a quote.
Heavy Load Urethane Pillar Springs Through Hole | AX/CX Series | Fast Lead Times | MISUMI
Heavy Load Urethane Pillar Springs Through Hole for demanding applications. AX/CX urethane formulation with Shore A90 support stable deflection control. Request a quote.
EX Series Heavy-Duty Urethane Pillar Springs - Through Hole | MISUMI Advantage | MISUMI
EX series heavy-duty urethane pillar springs with a through hole for load-bearing die cushioning. Urethane shore A90 supports stable performance. Request a quote.
EL Series Heavy Load Urethane Pillar Springs - Through Hole | Fast Delivery | MISUMI
EL Series heavy load urethane pillar springs for through-hole assemblies. Shore A90 urethanes offer load capacity for reliable return in tooling systems. Order now.
LAN Series Low Repulsion Urethane Pillar Springs | Shore A70, Through Hole Available | Fast Quotes | MISUMI
LAN Series Low Repulsion Urethane Pillar Springs for stable return in die and tooling. Shore A70 low repulsion urethane, through hole options. Request a quote.
Heavy Load Urethane Pillar Springs (AEX, CEX Series) | Long Configurable | MISUMI | MISUMI
Heavy Load Urethane Pillar Springs from MISUMI in the AEX / CEX series. Shore A90 urethane for stable heavy-load support in configurable lengths—request a quote.
Porous Urethane Foam High-Deflection Pillar Type (PLA Series) | MISUMI | MISUMI
Porous Urethane Foam High-Deflection Pillar Type (PLA Series) for load-bearing cushioning and improved deflection control in dies. Consult MISUMI.
AZNX Series Low Repulsion Urethane Springs Pillars, Counterbore | MISUMI Advantage | MISUMI
AZNX Series low repulsion urethane springs pillar type with counterbore holes. (Shore A70) Helps control movement and load response in tooling setups.
EX Series Heavy Duty Urethane Springs - Pillar Hourglass | Heavy Load | MISUMI | MISUMI
EX Series heavy duty urethane springs with pillar hourglass shape and shore A90 for heavy loads. Max elongation 30%—stable deflection for die return.
AZ Type Urethane Pillar Springs - Low Repulsion, Counterbore | MISUMI | MISUMI
AZ type urethane pillar springs with low repulsion urethanes (Shore A70) and counterbore type design for controlled compression. MISUMI.
Choose Your Urethane Grade & Configuration
Two decisions determine your product: (1) performance grade, then (2) physical configuration.
Maximum load capacity
→ EX, A, E, AX, AZ, AZX, C/LA series
Standard load, lower cost
→ AE, LAE, CEX series
Gentle force for delicate parts
→ AN, ANX, AZN, AZNX series
Max deflection (>50%)
→ PA, PLA series
Guide pin centering, most popular
→ EX, AE, ANX series
Maximum load-bearing surface
→ A, E, AN series
Self-centering in bore
→ AZ, AZN series
Non-standard lengths (1mm increments)
→ AX, EL, AEX, AZNX series
Configuration Comparison
| Criteria | Through Hole | Solid | Counterbore | Configurable |
|---|---|---|---|---|
| Guide pin support | Yes (pin through center) | No | Yes (self-locating recess) | Optional |
| Load-bearing area | Slightly reduced (hole area) | Maximum (full face) | Slightly reduced | Varies |
| Length options | Standard fixed lengths | Standard fixed lengths | Standard fixed lengths | Custom (1mm increments) |
| Best for | Guided spring pockets (most common) | Maximum load, simple install | Self-centering without guide pin | Non-standard die designs |
For detailed configuration selection guidance, see our What Is the Best Urethane Spring Configuration — Solid vs Through Hole vs Counterbore.
About Round Urethane Springs
Round urethane springs are the most versatile urethane spring form — they fit standard cylindrical spring bores and serve as direct drop-in replacements for metal die springs. Our 26-product range includes MISUMI heavy duty (EX/A/E/AX/AZ series), economy (AE/LAE/CEX), low repulsion (AN/ANX/AZN/AZNX), and porous foam (PA/PLA) grades, plus Lamina Marshmellow and DANLY Formathane precision-cast lines. Each grade is available in multiple configurations (solid, through-hole, counterbore, configurable length).
Frequently Asked Questions
Engineering Resources
How to Choose Between Heavy Duty, Economy, and Low Repulsion Urethane Springs
Decision framework for selecting the right performance grade for your stamping application.
What Is the Best Urethane Spring Configuration — Solid vs Through Hole vs Counterbore
Physical configuration comparison with installation and performance trade-offs.
Frequently Asked Questions
What is the difference between Heavy Duty, Economy, and Low Repulsion urethane spring series?+
Should I choose a solid, through-hole, or counterbore urethane spring?+
What is the maximum deflection allowed for Shore A90 urethane springs?+
Can I order custom-length urethane springs, and which series support it?+
Engineering Resources
How to Choose Between Heavy Duty, Economy, and Low Repulsion Urethane Springs
Decision framework for selecting the right performance grade for your stamping application.
What Is the Best Urethane Spring Configuration — Solid vs Through Hole vs Counterbore
Physical configuration comparison with installation and performance trade-offs.
Need a Custom Quote?
Specify your grade (Heavy Duty/Economy/Low Repulsion/Porous Foam), configuration (solid/through-hole/counterbore), OD, ID, and length. Configurable series allow custom lengths in 1mm increments.