Suspension System

Dampers

Back
Primary Vertical Damper 
Secondary Vertical Damper 
Secondary Lateral Damper 
YAW Damper

Sona Comstar serves as the primary supplier of hydraulic dampers to the Indian Railways, a component of significant operational importance.

Technical characteristics
Type of End Mountings
  • • Rubber disc
  • • Rubber flange type mountings 
  • • Spherical block/silent block type mountings 
  • • Articulated bearing type mountings 
  • • Bonded/ Non bonded rubber sleeves with Steel bush mountings
Damping Force Range
  • • 100 Kgf- 2500 kgf at up to 0.6 m/s velocity max.
  • • Low speed (0.01 m/s min) and high Force (upto 2000 kgf) for YAW damper type applications.  
  • • Multi speed characteristics 
Family sizes
  • • Max. extended length 1100 mm
  • • Min. compressed length 200 mm
Durability
  • Comstar Hydraulic dampers give extended intervals of overhaul, hence lower maintenance cost.
Manufacturing and testing facility
  • • Servo Hydraulic Performance cum Endurance Testing Machine 
  • • Damper strength testing machine   
  • • Vibration testing Machine 
Product range
  • • Primary Vertical Damper 
  • • Secondary Vertical Damper
  • • Secondary Lateral Damper
  • • YAW Damper
Salient features
  • • Extremely long service life (special rod guide bush & non- metallic wear rings)
  • • Robust construction (forged eyes, induction hardened piston rods) 
  • • Easy and simple to overhaul 
Reconditionable
  • Designed for easy and trouble free maintenance and can be reconditioned on site. Escorts has assisted many railways in setting up reconditioning shops.
  • Escorts also supplies complete kit for reconditioning of Hydraulic Dampers including Testing Equipment, Tooling and Fixtures required for reconditioning.