GNEE rail pads are placed directly underneath the rail base. They ensure improved load distribution and simultaneously increase the elasticity of the ballasted track, which has a positive effect on the wear of the superstructure components and on ride comfort.
GNEE offers an exceptionally wide range of rail pads for every required stiffness – from heavy haul to urban applications.
Application of Rail Pads in Rail Fastening System
Rail pads for E-type rail fastening systems
Rail rubber pads used for E-type rail fastening systems are with the similar functions of the rail insulators to insulate the rail above it from the tie sleepers lied below it, for effective protection against vibration and structure-borne noise as well. The rail pad works together with e-clips, rail insulators/insulated gauge blocks and rail shoulders/embedded parts to form a whole set of E-type rail fastening system.
| Item included | Quantity | Material | Size | Remark |
|---|---|---|---|---|
| E clip | 2 | 60Si2MnA, 60Si2CrA | Dia. 16mm,18mm or 20mm (E1809, E2006,E2007,E2009,etc | Hardness: 44-48HRC |
| Toe Load: Dia.16mm: 500-700kgf; Dia.18mm:750-900kgf; Dia.20mm:1100-1400kgf | ||||
| Fatigue life: 5 millions cycles without breaking | ||||
| Standard: DIN17221, BS970, GB/T1222 | ||||
| Shoulder | 2 | QT500-7, QT450-10 | For UIC54, UIC60, 115RE, BS80lbs, BS100lbs, 50kg rail, 60kg rail, etc. | Note: Hardness of E-clip is 44-48HRC; Toe Load for E-clip is 500-700kgf (Dia.16mm); 750-900kgf(Dia.18mm); 1100-1400kgf(Dia.20mm); Fatigue life of E-clip is 5 millions cycles without breaking DIN17221, BS970, GB/T1222 qualified E-clip |
| Rail pad | 1 | HDPE, rubber or EVA | ||
| Insulator | 2 | Reinforced Nylon 66 (PA66) |
Rail pads for SKL rail fastening systems
A rail pad in a SKL rail fastening system is a small but crucial fastener part, working together with SKL clips, screw spikes, plastic dowels, guide plates and so on. The elastic rail pads we produce possess a defined stiffness and demonstrably increase the elasticity of the track superstructure. With a higher level of elasticity, it contributes towards quiet running of the rolling stock, to meet today's acoustic requirements on railway lines.
| SKL tension clip | Ss35 screw spike | Flat washer | Plastic dowel | Guide plate | Rail pad | |
|---|---|---|---|---|---|---|
| Pieces required | 2 | 2 | 2 | 2 | 2 | 1 |
| Material | 60Si2CrA, 60Si2CrA, 38Si7 | Grade 4.6: Q235; Grade 5.6: 35# Grade 8.8: 45# | Q235 | HDPE, Reinforced Nylon 66 (PA66) | Reinforced Nylon 66 (PA66) | EVA, or rubber |
| Size | skl1,skl3,skl12,skl14 | M24×150mm | Uls7 | For different sizes of screw spike | UIC54, UIC60, 50kg rail, 60kg rail, and other sizes as ordered | |
| NOTE | Hardness: 42-47HRC 5 millions cycles without breaking. Standard: DIN17221, GB/T1222 | Standard: ISO898-1, UIC864-1 and NF F500-50 | Standard: EN10025, EN10139 | To insert into concrete sleeper | Customized products available. | |
Rail pad material
HDPE
|
No. |
Technical Parameter |
Unit |
Technical Requirement |
Value |
|
1 |
Density |
g/cm3 |
0.95-0.98 |
0.95 |
|
2 |
Tensile Strength |
Mpa |
≥19 |
19 |
|
3 |
Elongation |
% |
>80 |
150 |
|
4 |
Melting Point |
℃ |
170-190 |
190 |
|
5 |
Insulation Resistance |
Ω |
≥1×1010 |
3.5 ×1010 |
|
6 |
Hardness |
A |
≥98 |
98(A) |
EVA: Polyethylene 80%, Vinyl Acetate 20%
|
No. |
Technical Parameter |
Unit |
Technical Requirement |
Value |
|
1 |
Density |
g/cm3 |
0.95-0.98 |
0.95 |
|
2 |
Tensile Strength |
Mpa |
≥15 |
16 |
|
3 |
Elongation |
% |
>500 |
550 |
|
4 |
Melting Point |
℃ |
170-190 |
170 |
|
5 |
Insulation Resistance |
Ω |
≥1×1010 |
5.0 ×1010 |
|
6 |
Hardness |
A |
≥90 |
92(A) |
Rubber
|
No. |
Technical Parameter |
Unit |
Value |
|
1 |
Stiffness |
KN |
90-130 |
|
2 |
Hardness Shore A |
℃ |
72-80degree |
|
3 |
Electronic Resistance |
Ω |
≥ 106 |
|
4 |
Tensile Strength before Aging |
Mpa |
≥12.5 |
|
5 |
Elongation before Aging |
% |
≥250 |
GNEE RAIL offers different kinds of railway fasteners to meet client's requirements, such as Elastic Rail Clip and Clamp, Rail Screw Spike, Plastic Dowel, High Tensile Track Bolt with Nut, Rail Base(Tie) Plate, Rail Fish Plate, Railway Shoulder(Insert), Fish Bolt, Railroad Rubber and EVA Pad, etc. Samples and drawings provided by customer, we will manufacture qualified products accordingly.
