The 45-ton Capacity National Crane Series NBT45 swing seat boom truck has a stronger standard torsion box that improves rigidity, reduces truck frame flex and reduces the need for counterweight, Easy Glide boom wear pads reduce the conditions that cause boom chatter and vibration. The net result is smoother crane operation.  Speedy-reeve boom tip and sheave blocks simplify rigging changes by decreasing the time needed to change line reeving, Painting crane components before assembly reduces the possibility of rust, improves serviceability and enhances the appearance of the machine, State of the art control valve provides smoother operation. The new design eliminates parts, reducing repair costs and improving the machines serviceability. Bearings on the boom and retract cables can be greased through access holes in the boom side plates, Boom sections are supported by one hydraulic extend cylinder, minimizing maintenance, two-grooved drum hoist with cable packer and electronic drum rotation indicator. 

Models in Series Include:

• NBT45-142 is the 142 ft (43, 3 m) five-section full power boom
• NBT45-127 is the 127 ft (38, 7 m) five-section full power boom
• NBT45-103 is the 103 ft (31, 4 m) four-section full power boom

Crane Features:

• 4, 500 lb (2 041 kg) tailswing counterweight
• Self-lubricating Easy Glide wear pads
• Deluxe operator’s cab with diesel heater w/defroster, skylight, pilot-operated hydraulic controllers