Heavy Duty. Tension Bracing affords full trolley travel. Self-aligning anti-friction bearings for 360° rotation. Heavy section structural mast supported top and bottom permits smaller floor loads. Top bearing connection may be attached to ceiling, over head truss or with proper bracket, supported from wall or column. These jib cranes are constructed in sections for ease of shipping and field installation. The overall height of the jib can be varied to suit existing conditions. Above dimensionsmore are for general reference only. For specific installation dimensions request certified drawing No. SD-800-7T. A 1/2" allowance has been included in the "C" dimension for field shim of upper mast bearing assembly. less