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Wichita Clutch Spring-Set Brakes for Offshore Platform King Post Cranes
A major global manufacturer of oil and gas drilling rigs and equipment required
a winch braking solution for its king post cranes with lifting capacities up to
2,720 metric tons. The space-saving heavy-lift cranes are used to transfer
equipment from support vessel decks to the platform deck. They also raise and
lower equipment to and from the seabed. Since they are post-mounted directly to
the rig, no counterweights are needed. The brakes are used for static holding and
emergency stopping.
Wichita Clutch provided spring-set, air released 136H brakes to meet the large
winch application requirements. Positioned on the winch cable drums, the
heavy-duty brakes have a slip torque capacity of 400,000 in.lbs. (45,193 Nm).
Spring-set actuation assures quick, smooth stops. Units feature high-strength
cast iron construction and thicker friction discs for longer wear life. No adjustment
or lubrication is required. Brakes were supplied with materials traceability
documentation and Charpy impact test results.
Highlights
- Spring-set, air released
136H brakes
- Static holding and
emergency stopping
functionality
- 400,000 in.lbs.
(45,193 Nm) slip torque
capacity
- Quick, smooth stops
- High-strength, cast iron
construction
- Thicker friction discs for
longer wear life
- No adjustment or
lubrication is required