Blocstop® BSO – Automatic overspeed braking system

Blocstop® BSO

The Blocstop® BSO is an automatic, fall-arrest secondary safety device which is fitted to the wire rope of a Tirfor® or Tirak® hoist. 

The Blocstop® BSO protects against hoist failure and, if mounted on a separate safety wire rope, against suspension wire rope failure.

The Blocstop® BSO is suitable to hold or restrain any loads during lifting and pulling applications.

When in overspeed, the Blocstop® BSO automatically engages and locks on wire rope. The BS/BSO for double rope suspension provides a locking device for the primary and secondary wire ropes.

FEATURES

• Capacities: 1,500, 2,200, 4,400 or 6,600 lb. (680, 1,000, 2,000 or 3,000 kg)

APPLICATIONS

• Mounted on a secondary wire rope, the Blocstop® holds the load safely should there be any defect in the primary suspension wire rope or failure of the lifting device
• Mounted on the suspension or tensioned wire rope, the Blocstop® protects the load against failure of the primary lifting/tensioning device
• Mounted on warehouse overhead doors, to securely hold the door open and will also prevent the door from closing too fast when overspeed conditions are detected