Made of polyurethane, these balls offer outstanding mechanical properties, including a remarkable resistance to wear and impact, while maintaining optimal elasticity. They are ideal for applications that require greater durability in the face of environmental conditions. Thanks to our technical expertise over 40 years, Marteau- Lemarie ensures a stock available in France for quick delivery.
Physical characteristics of the polyurethane rubber ball
| Ownership | Value | Unit |
|---|---|---|
| Density | 1.15 | g/cm3 |
| Young Module | 100 | MPa |
| Thermal expansion coefficient | 180 (T=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 0.25 | W/m·K |
| Volume resistivity | >10^8 | D·m |
| Relative magnetic permeability | <~1 | — |
| Magnetic behaviour | Diamagnetic | — |
| Friction coefficient | 0.8 | — |
| Fracture extension | max 750 | % |
| Remanent compression | 11 | % |
Hardness and mechanical resistance of polyurethane rubber ball
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 50-95 | Shore A |
| Tensile failure load | 8-45 | MPa |
| Tensile failure load | 1,16-6,53 | psix10^3 |
| Exercise temperatures | -20/80 | ° C |
| Exercise temperatures | -20/176 | °F |
Available diameters and grades for polyurethane rubber ball
| Parameter | Value |
|---|---|
| Minimum diameter | 1 mm — 3/64′′′ |
| Maximum diameter | 152.4 mm — 6′′′ |
| Grades available | III |
Corrosion resistance of polyurethane rubber ball
Good contact resistance with nitrogen, oxygen, ozone, mineral oils and fats, aliphatic hydrocarbons, diesel. Attacked by hot water and water vapour, acids, alkalis.
Applications of polyurethane rubber ball
Special bearings, pneumatic pumps, applications that require good elastic properties combined with high tenacity.
Hardness available: 50-60/65-75/70-80/80-90/85-95 Shore A
