Type WJ-12 rail fastenering system comprises of nut, flat washer, type W5 rail fastener, type T bolt T3, WJ12 gauge board, WJ12 embedded iron, WJ12 insulated gauge block, WJ12 bottom plate, WJ12 iron plate, WJ12 elastic plate under iron plate, WJ12 height adjustment plate under gauge board and WJ12 preset height adjustment plate.
Type WJ-12 rail fastenering system is widely used for 30 tons axle load railway with 60kg/m or 75 kg/m rail double blocks type or long sleeper embedded non ballasted track.
1）、ClampFastening force per seat ≥20 kN
2）、Longitudinal resistance per seat is no less than 10kN
3）、The rail fasteninger system shall be no damage after 300 million times of loading circulations, gauge enlarge shall be less than 6 mm.
4）、Adjustment data for both sides of single strand of rail: －6～＋4 mm, adjustment data for gauge: －12～＋8mm, adjustment data for rail high-low position
5）、The system elasticity: Plate static stiffness under rail is 50kN/mm
6）、Pulling resistance of embedded iron is no less than 70kN.