General Crane Specs
Model: National Crane NBT30H-2
Crane Type: Stand-up control boom truck crane
Rated Capacity: ~30 U.S. tons (≈27.2 metric tons)
Boom: 4-section telescoping — 110 ft (33.5 m) standard length
Max Tip Height: ~119 ft (36 m)
🧰 Lifting & Load Systems
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Graphical Rated Capacity Limiter (RCL): real-time load/boom/angle info with Work Area Definition System (WADS)
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Anti-Two Block System standard (prevents hook block from contacting boom tip)
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Winch: planetary, two-speed (lift speeds approx. 23–310 fpm depending on layer and speed)
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Wire Rope: ~390 ft of 9/16″ rotation-resistant cable
🚜 Outriggers & Stability
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Dual “H”-style outriggers (front and rear) with full-span, mid-span, and retracted spreads for flexible setup
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Front outrigger motion alarm and monitoring system
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Single Front Outrigger option for 360° stability
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Polymer outrigger pads included on main outriggers
🔧 Hydraulics & Controls
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Load-sensing piston pump hydraulic system (efficient multi-function performance)
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Electric over hydraulic outrigger control pendant
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Dual-station manual control levers; optional radio remote control available
📊 Performance & Chassis
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Rotation: ~410° non-continuous with adjustable swing drive
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Typical dry weight (crane only): ~20,650–21,470 lbs (≈9,367–9,739 kg) depending on configuration
