Rail insulator is installed between rail and tie plate, it’s used to adjust rail gauge and insulate the rail from tie plates and clips. It’s of the same use as a rail pad, but it is thicker than rail pad. And it can be used in E type fastening, SKL rail fastening and Nabla fastening system .
1. Distribution of toe load over larger area on rail foot;
2. Allow flexibility for use of different rail section on the same / common sleeper;
3. Permits gauge adjustment in curved track and correction in alignment;
4. Provide insulation between rail and insert.