Hydraulic Crawler Crane 140 USt @ 10', 42.3'-195.3' six section main boom, 10'-31'-55' optional lattice extension, 257.6' max. tip height, 22,380 lbs max. line pull, 537 fpm max. speed. Lightweight nylon head sheaves reduce overall machine weight and increase lift capacities. NEW Fly pinning designed for limited ladder use and ELIMINATES hammering pins. Quick reeve boom head with quick reeve block allows rope to be easily reeved over boom head. Hammerhead boom nose allows operator to work at high boom angles.