In the rail fastening system for railroad tracks, the height adjustment is realized mainly by changing the thickness of the pad under the rail or inserting a height adjustment pad under the rail or tie plate. The rail height adjustment pad is an important application in ballastless track rail fasteners.
The commonly used material for height adjustment pads (or height adjustment plates) includes rubber, plastic such as HDPE (High-Density Polyethylene), and steel. The thickness of the height adjustment pad varies from 1mm to 20mm which depends on the specific place it’s been embedded and the material it’s used. Commonly seen thicknesses of the adjustment plates include 1mm, 2mm, 5mm, 8mm, 12mm, etc.
HDPE Rail Height Adjustment Pad For Sale
AGICO supplies height adjustment pads with standard specifications or according to the client’s requirements. Feel free to give us a call or email us.
| Product name | height adjustment pad |
| Application | Railway fastener system |
| Material | HDPE (High-Density Polyethylene) |
| Color | Black |
| Density g/cm3 | 0.94-0.96 |
| Melt flow rate | (MFR 190/2.16) 3.1-18g/10 min following DIN ISO 1133 |
| Tensile strength (Mpa) | 27.4 |
| Hardness (shore A) | Approx. 65 Shore-D following DIN 53505 |
| Volume resistivity | ＞108 Ohmcm tested according to DIN IEC 60093 / DIN IEC 60167 |
| Surface | Free of cracks and/or damages |
Rail height adjustment pad for WJ-7 rail fastener
WJ-7 rail fastening system mainly consists of T-bolt, lock nut, flat nut, elastic clip, insulating blocks, steel plate, under-rail pads, insulating cushion pads, heavy spring washers, flat pads, anchor bolts, and embedded casing. In addition, to adjust the height of the steel rail, it also includes a height adjustment pad under the rail or tie plate.
Specification of height adjustment plate for WJ-7 rail fasteners
The height adjustment range of WJ-7 rail fasteners is about 0-30mm.
| Height adjustment pad under rail | Height adjustment pad under tie plate |
|---|---|
| 1mm, 2mm, 5mm, 8mm | 5mm, 10mm |
Rail height adjustment pad for WJ-8 rail fastener
WJ-8 type fasteners mainly consist of screw spikes, flat washers, elastic clips, insulating blocks, regular baffles, under-rail pads, steel tie plates, elastic pads under the tie plates, and embedded sleeves tube. In addition, to adjust the height of the steel rail.
height adjustment plates are embedded under the rail (or the thickness of the rail pad is modified) and embedded under the steel tie plate.
Specification of height adjustment plate for WJ-8 rail fasteners
| The adjustment range of rail track (mm) | Adjustment pad under rail (mm) | Adjustment pad under tie plate (mm) |
|---|---|---|
| 0 | 0 | 0 |
| 1-10 | 1-10 | 0 |
| 11-20 | 1-10 | 10 |
| 21-30 | 1-10 | 20 |
Rail height adjustment pad for Vossloh300-1 rail fastener
The rail height adjustment pads for the Vossloh300-1 rail fastener can be made from plastic or steel. The plastic pad is of 6mm and 10mm thickness and is marked as Ap20-6 and Ap20-10. The steel adjustment plate is 20mm thick and with the mark of Ap20S.
According to the requirements of design, the high and low position adjustment range is -4mm to +56mm. It is realized by embedding AP20-6, Ap20-10Z plastic height adjustment pad, w692 tie plate, and Ap20S steel height adjustment pad.
-4mm to +2mm height adjustment by changing rail pads with different thickness
| Height adjustment range (mm) | Zw 692-x Rail Pad (2-8mm) | Screw Spike Ss36 230-280mm |
|---|---|---|
| +2 | 1×8mm | 2×230 |
| +1 | 1×7mm | 2×230 |
| 0-Standard design | 1×6mm | 2×230 |
| -1 | 1×5mm | 2×230 |
| -2 | 1×4mm | 2×230 |
| -3 | 1×3mm | 2×230 |
| -4 | 1×2mm |
+3mm to +22mm rail height adjustment by embedding HDPE height adjustment pad and changing rail pads
| Height adjustment range (mm) | HDPE height adjustment pad (6 or 10mm) AP20-x | Rail pad (2-8mm) Zw 692-x | Screw Spike Ss36 230-280mm |
|---|---|---|---|
| +22 | 2×10mm | 1×8mm | 2×250 |
| +21 | 2×10mm | 1×7mm | 2×250 |
| +20 | 2×10mm | 1×6mm | 2×250 |
| +19 | 2×10mm | 1×5mm | 2×250 |
| +18 | 1×10mm+1×6mm | 1×8mm | 2×240 |
| +17 | 1×10mm+1×6mm | 1×7mm | 2×240 |
| +16 | 1×10mm+1×6mm | 1×6mm | 2×240 |
| +15 | 1×10mm+1×6mm | 1×5mm | 2×240 |
| +14 | 2×6mm | 1×8mm | 2×240 |
| +13 | 2×6mm | 1×7mm | 2×240 |
| +12 | 1×10mm | 1×8mm | 2×240 |
| +11 | 1×10mm | 1×7mm | 2×240 |
| +10 | 1×10mm | 1×6mm | 2×240 |
| +9 | 1×10mm | 1×5mm | 2×240 |
| +8 | 1×6mm | 1×8mm | 2×230 |
| +7 | 1×6mm | 1×7mm | 2×230 |
| +6 | 1×6mm | 1×6mm | 2×230 |
| +5 | 1×6mm | 1×5mm | 2×230 |
| +4 | 1×6mm | 1×4mm | 2×230 |
| +3 | 1×6mm | 1×3mm | 2×230 |
+23mm to +56mm rail height adjustment by embedding HDPE height adjustment pad, steel height adjustment pad, and changing rail pads
| Height adjustment range (mm) | HDPE pad (6 or 10mm) AP20-x | Steel height adjustment pad 20mm AP20S | Rail pad (2-8mm) Zw 692-x | Screw Spike Ss36 230-280mm |
|---|---|---|---|---|
| +56 | 1×10mm+1×6mm | 2×20mm | 1×6mm | 2×280 |
| +55 | 1×10mm+1×6mm | 2×20mm | 1×5mm | 2×280 |
| +54 | 2×6mm | 2×20mm | 1×8mm | 2×280 |
| +53 | 2×6mm | 2×20mm | 1×7mm | 2×280 |
| +52 | 3×10mm | 1×20mm | 1×8mm | 2×280 |
| +51 | 3×10mm | 1×20mm | 1×7mm | 2×280 |
| +50 | 3×10mm | 1×20mm | 1×6mm | 2×280 |
| +49 | 3×10mm | 1×20mm | 1×5mm | 2×280 |
| +48 | 2×10mm+1×6mm | 1×20mm | 1×8mm | 2×270 |
| +47 | 2×10mm+1×6mm | 1×20mm | 1×7mm | 2×270 |
| +46 | 2×10mm+1×6mm | 1×20mm | 1×6mm | 2×270 |
| +45 | 2×10mm+1×6mm | 1×20mm | 1×5mm | 2×270 |
| +44 | 2×10mm+1×6mm | 1×20mm | 1×4mm | 2×270 |
| +43 | 2×10mm+1×6mm | 1×20mm | 1×3mm | 2×270 |
| +42 | 2×10mm | 1×20mm | 1×8mm | 2×270 |
| +41 | 2×10mm | 1×20mm | 1×7mm | 2×270 |
| +40 | 2×10mm | 1×20mm | 1×6mm | 2×270 |
| +39 | 2×10mm | 1×20mm | 1×5mm | 2×270 |
| +38 | 1×10mm+1×6mm | 1×20mm | 1×8mm | 2×260 |
| +37 | 1×10mm+1×6mm | 1×20mm | 1×7mm | 2×260 |
| +36 | 1×10mm+1×6mm | 1×20mm | 1×6mm | 2×260 |
| +35 | 1×10mm+1×6mm | 1×20mm | 1×5mm | 2×260 |
| +34 | 1×10mm+1×6mm | 1×20mm | 1×4mm | 2×260 |
| +33 | 1×10mm+1×6mm | 1×20mm | 1×3mm | 2×260 |
| +32 | 1×10mm | 1×20mm | 1×8mm | 2×260 |
| +31 | 1×10mm | 1×20mm | 1×7mm | 2×260 |
| +30 | 1×10mm | 1×20mm | 1×6mm | 2×260 |
| +29 | 1×10mm | 1×20mm | 1×5mm | 2×260 |
| +28 | 1×6mm | 1×20mm | 1×8mm | 2×250 |
| +27 | 1×6mm | 1×20mm | 1×7mm | 2×250 |
| +26 | 1×6mm | 1×20mm | 1×6mm | 2×250 |
| +25 | 1×6mm | 1×20mm | 1×5mm | 2×250 |
| +24 | 1×6mm | 1×20mm | 1×4mm | 2×250 |
| +23 | 1×6mm | 1×20mm | 1×3mm | 2×250 |
