Spring Setting Device SSD on Indian Railways

3D ModelNoAI

Spring Setting Device SSD Thick Web Switch on Indian Railways In a TWS turnout, no stretcher bar is used and hence switches are able to move independently.

A spring setting device (SSD) is provided at junction of Rail head (JOH), in lieu of stretcher bars, to assist in proper setting of switch upto JOH, which is placed between sleeper number 13 and

Adjustment of locking is done by means of packing shims between switch rail and stock rail bracket. Three each of 1 mm and one of 0.5 mm shims are provided for each switch.