Type II rail fastener system comprises of nut, flat washer, type II clip, gauge board, board block, screw spike and bottom plate.
Type II rail fastener system is widely used for standard gauge straight line and the line that radius of curve is less than 300m, it connect s 60kg/m rail with concrete sleeper.
1）、Clamping force per rail seat ≥20 kN
2）、Longitudinal resistance per seat is no less than 9kN
3）、Fastener system should be in good condition after bearing 3 million times loading circulation, the gauge expansion should be less than 6mm.
4）、Adjustment data for both sides of single strand of rail: －8～＋6 mm, adjustment data for gauge: －16～＋12mm
Adjustment data for rail high-low position: 10 mm