LeTourneau PCM-220 Pedestal Crane Specs
🔹 General
Type: Offshore pedestal crane (electric drive)
Manufacturer: LeTourneau (later Marathon LeTourneau)
Application: Jack-up rigs / offshore platforms
🔹 Capacity
Rated capacity (typical):
50 short tons @ 50 ft radius
Alternative ratings (depending on reeving):
Up to 55–75 short tons @ ~32 ft radius
🔹 Boom
Standard boom length:
140 ft (most common)
Other configurations:
100 ft boom option
🔹 Configuration
Mounting: Fixed pedestal (kingpost)
Rotation: 360° continuous swing
Typical installation: 2–3 cranes per rig
🔹 Drive System
Power type: Electric (SCR / DC drive typical)
Power supply: Offshore rig power (commonly 600V AC → DC drives)
Functions powered:
Hoist
Luffing (boom hoist)
Swing
(Exact motor sizes vary by build, but system is similar to PCM-120 with DC motors and gear reducers.)
🔹 Hoist System
Multi-part line (4-part / 6-part typical)
Heavy offshore winch with planetary gearing
Designed for pipe handling + cargo lifts
🔹 Typical Features
Anti-two-block system
Load moment / overload protection
Limit switches (boom & hoist)
Fail-safe braking systems
Remote or cab controls
🔹 Physical / Structural
Pedestal-mounted kingpost crane
Heavy-duty offshore corrosion protection
Designed for continuous duty in marine environment
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