Vulklthan® (95±2 Shore A)
Vulklthan® (95±2 Shore A)
Vulklthan®: High-load polyurethane. Very high load capacity, low compression set, high tear, abrasion and impact resistance, long service life; also suitable for high speed, though it builds up more heat than Vogthan® at speed.
Typical Operating Conditions
- Typical equipment: mining monorail drive wheels, shield machine support wheels, stacker crane wheels, heavy transfer cars, heavy-duty friction drive wheels.
- Load and speed: heavy loads, also at higher running speeds, with stable traction.
- Duty: continuous running and frequent start-stop cycles; handles shock and impact loading.
Material Parameters
| Property | Test method | Unit | Typical value |
|---|---|---|---|
| Hardness | ASTM D 2240 | Shore A | 95±2 (95 A / 98 A) |
| Tensile strength | ASTM D 412 | MPa | 52 |
| Elongation at break | ASTM D 412 | % | 620 |
| 300% modulus | ASTM D 412 | MPa | 14.7 |
| Tear strength | ASTM D 624 | kN/m | 115 |
| Rebound resilience | ASTM D 2632 | % | 62 |
| DIN abrasion | DIN 53516 | mm³ | 31 |
| Compression set (100 °C × 22 h) | ASTM D 395 | % | 26 |
| Continuous service temperature | — | °C | −40 to +80 |
| Short-term peak temperature | — | °C | +120 |
Note: typical values measured on laboratory test specimens, for material selection only; whole-wheel performance depends on wheel diameter, tread thickness and operating conditions.