Features and Benefits

• Crossheads are available in two designs –
  • Shoe-type – Two rectangular shaped shoes which ride inside the structure’s beams
  • Wheeled-type – Four wheel blocks with spring-loaded guides in two planes ride on a track attached to the structure’s beams.

• Free Fall Arrestor (FFA) – Ensures safe operation by preventing cutting assembly equipment from falling in the event of suspension failure. Built into the crosshead, no electric or pneumatic connections are required for activation.
  • Provides personnel and equipment safety in the event of steel wire rope failure. Prevents cutting assembly from falling and damaging the cutting deck
  • Prevents ancillary equipment damage
  • Automatically disengages upon the restoration of required rope tension
  • FFA includes cable gripping and rail gripping mechanisms as part of the standard scope of supply

• Other crosshead and FFA components include:
  • Winch
  • Winch wire rope
  • Wire rope tension monitoring (tensiometers)
  • Lead, crown, traveling and guide blocks