Under sleeper pads provide vibration protection, preserve the ballast under the tracks and improve track stability. They can be installed both in high-speed rail lines and in lines with high axle loads, as well as in existing standard gauge lines, during repairs and retrofitting.
The material of the USP shall be one of the following:
a) Polyurethane (PUR)
b) Natural rubber (NR)
c) Thermoplastic Elastomer (TPE)
Specifications of Under sleeper pads
| Elastomer thickness range | 7-20mm |
| Micro-Filament Fastening (MFF) thickness | 0.7mm |
| Density range | 710-1200kg/m2 |
| Geometry | Flat |
| Static bedding modules range | 0.08-0.25N/mm2 accordiing to DIN45673-6 |
| Dynamic bedding modules range (10Hz) | 0.08-0.32N/mm2 accordiing to DIN45673-6 |
| Pull-out strength | ＞0.5MPa according to DIN45673-6 |
GNEE RAIL has tested the most important under sleeper pad types in accordance with EN 16730. GNEE carried out some of the various tests on its in-house large-scale test rig. All specifications set out in both European and international rail standards have thus been met.
We also manufacture kinds of Railway Screw Spike, Clip and Clamp, High Tensile Bolt with Nut and Washer, Rail Base(Tie) Plate, Rail Fish Plate, Rail Shoulder, Rail Screw and Spike, Fish Bolt with Nut and Washer, Rail Dowel, Rubber and EVA Pad, Crane Rail and Light Rail, and Other rail fasteners parts.