Railway Hydraulic Rail Tensor for Rail Stretching Hydraulic Rail Tensor Itâ??s suitable for 75kg/m and 60kg/m type rail stress relief and seamless long rail relaying. While operating in the field at a certain temperature range being lower than the rail locking temperature, by employing this machine, the length of a rail with zero-stress can be forced to stretch to a length at locking temperature, then re-lock the rail. SPECIFICATION Model YLS-900I Material Stainless Steel Dimensions (L x W x H) (mm) 1300*690*240mm Max. rated working pressure 57Mpa Max. rail pulling force 2*450kN Max. stroke of working cylinder â?¥500mm Two pull rod center distance 535mm Lock mode wedges clamp on both sides of rail head Pump model Honda GXV160 Power 3.05kW Rate of flow 3L/min Machine weight 283kg Internal combustion pump station weight 75kg (not including pipeline)