Switches & Crossings Pads

Unlike standard plain line pads used in their millions, Switches and Crossings require many variations of pads to cater for the different sizes brought about by their different positions within crossovers etc.

The angle of the turnout / crossover will require totally different pads compared with the angles of other turnouts. The fastening system may also require rail pads that are offset (i.e. not symmetrical) with each turnout perhaps having so many variations that a ‘kit of pads’ may be necessary.

Trackelast provide ‘kits of pads’ to suit customer requirements

Grade	More Info	Hardness ^oIRHD	Density g/cm³	Static Stiffness kN/mm/m²	Dynamic Stiffness kN/mm/m²	Comments
FC5	More Info	66	0.80	2550 (0.128 - 1.128 MPa) 4.8mm sample thickness	4570 (0.128 - 1.128 MPa) 4.8mm sample thickness	Used with wooden sleepers and is formulated to resist attack by timber preservations. It prevents chafing and indenting of wooden sleepers by baseplates and rail chairs. Can be used in strip form for bridge bearers and continuous rail support on concrete plinths.
FC10	More Info	68	0.75	1100 (0.128 - 1.128 MPa) 10mm sample thickness	1750 (0.128 - 1.128 MPa, 2Hz) 10mm sample thickness	FC10 is used as a baseplate pad between baseplates and steel, concrete or timber sleepers where moderate oil or grease contamination is present, and also (subject to load capacity) in bridge bearing applications.
FC16	More Info	70	1.15	6400 (0.1 - 1.1 MPa) 4.8mm sample thickness	N/A	FC16 is used primarily for supporting ceramic insulators on third rail and other areas where a high degree of electrical insulation is required. It is also used as a baseplate pad with steel or concrete sleepers.
FC846	More Info	85	1.18	16000 (1.0 - 4.2 MPa) 10mm sample thickness	38000 (1.0 - 4.2 MPa, 5Hz) 10mm sample thickness	Used as a rail seat pad, for use between flat-bottomed rails and malleable iron or steel baseplates. FC846 is particularly suitable for areas of high wear and tear, for example on switches, crossings and tight radius curves.
FC897	More Info	96	1.23	N/A	N/A	Used for shimming and mounting applications, especially under baseplates, FC897 offers a useful alternative to steel shims, offering flexibility and excellent electrical insulation properties. Trackelast FC897 can be used under any normal loading conditions.

Grade	More Info	Hardness ^oIRHD	Density g/cm³	Static Stiffness kN/mm	Dynamic Stiffness kN/mm	Comments
FC128	More Info	94	0.93	785 (20-80 kN) 5mm sample thickness	N/A	Rail seat or baseplate pad designed for fitting between the rail and sleeper or baseplate. It can be supplied with retaining lips to prevent dislodging when in service as a rail pad. Also suitable for use with any axle loads, from light transit systems to heavy freight lines.
FC584	More Info	60	1.05	190 (20-80 kN @ 1200 kN/min) 10mm sample thickness	N/A	Used as a rail seat pad material, for use between either flat-bottomed rails and concrete sleepers or on malleable iron or steel baseplates. It is designed for maximum axle loads of 25 tonnes and speeds up to 250 KM/hr.
Micromax (Rail Pad)	More Info	53	0.97	140 (20-80 kN) 5.5mm sample thickness	260 (20-80 kN 5Hz) 5.5mm sample thickness	Reduces dynamic forces from the track into sleeper systems. In this way it is possible to give older sleeper designs modern levels of impact protection. Micro-max pads are also available for new build track.
Micromax (Baseplate)	More Info	50	N/A	48 (8 - 70.5 kN) 10mm sample thickness	60 (8 - 70.5 kN, 2Hz) 10mm sample thickness	Considerably reduces dynamic forces from the track into sleeper systems, and are suitable for both modern high speed systems and for upgrading older track designs.

Grade	More Info	Shore Hardness ^oShore D	Density g/cm³	Application of Use / Comments
FC140	More Info	>63	0.94 - 0.97	Trackelast FC140 is a High Density Polyethylene (HDPE) material, black in colour, used either as a rail pad or as a height adjusting shim beneath baseplates or third rail supports.

...

...