Spanco Jib Cranes
 Wall Cantilever Type
 Wall Bracket Type

JIB CRANES WALL BRACKET STANDARD MODEL 301 SPECIFICATIONS

DESIGN FACTORS: The standard capacity rated load of the jib crane represents the net rated load at the hook of a hoist of the same rated load as the crane, with a design factor. This design factor for stresses in a crane is based on the capacity plus 25%of the rated load for impact and 15% of the rated load for the weight of the hoist and trolley. This was utilized along with the average yield stress of the material to determine the type of design. This design provides for a margin to allow for variations in the properties of material, operating conditions, and design assumptions.

Note: No crane should ever, under any condition, be loaded beyond its rated capacity.

I-BEAM: The boom or I-beam is designed to meet all specifications utilizing the factors of 25% of rated load for impact and 15% of rated load for hoist and trolley weight. This factor (capacity x 1.4) was used to determine the stresses. 15% of capacity (capacity x 1.15) was utilized to calculate deflection.

TIE RODS: Each boom is supported by a single tie rod. The tie rod is designed in the same manner as described above and is in tension.

BRACKETS: Each bracket is constructed of formed steel. All components are in double shear, including the bolts. All rotating brackets contain bronze bushings and grease fittings.

BEARINGS: Each radial load bearings (top of bracket) are of s.a.e 600 bronze with pressure grease lubrication. The thrust bearing is oil impregnated self-lubricating oilite bronze.

PAINTING: The jib crane will be painted with one coat of safety yellow, fast drying enamel paint; federal specification # 13538.

CONSTRUCTION, MAINTENANCE AND OPERATION:
The proper construction procedure, list and type of parts and maintenance instructions are furnished with purchase of jib crane.

Warning Note: This equipment is not, in any way, designed for lifting, supporting, or transportation of humans. failure to follow the specified limitations can result in serious bodily injury and property damage.