Head Blocks

Head Blocks

Underhung head block; cast iron or nylon sheaves; 8″, 12″, and 16″ diameter.

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Sub: 55 Series

  • Upright style, normally supported by two structural I-beams.
  • ASTM Class 30 grey iron or nylon sheave.
  • Equal pitch diameter on rope and cable grooves for smooth operation.
  • Tapered roller bearings.
  • Base angle legs turned in to allow close mounting centers. Notches allow clear passage of all cables.
  • 10 gauge side plates fully enclose sheave; 16" blocks have 7 gauge side plates.
  • Side plates are bolted and welded to the base angles for extra strength.
  • Six spacers between the side plates, four prevent cables from escaping the sheave grooves.
  • Base angles punched with alternating slots and holes for easy installations.
  • Mounting clips available, please provide steel dimensions.
  • Head block capacities are affected significantly by mounting conditions, see the “More Info” tab for tables of capacities

Sub: 59 Series

  • Underhung style, normally supported by two structural I-beams.
  • ASTM Class 30 grey iron or nylon sheave.
  • Equal pitch diameter on rope and cable grooves for smooth operation.
  • Tapered roller bearings.
  • Base angle legs turned in to allow close mounting centers.
  • 10 gauge side plates fully enclose sheave; 16" blocks have 7 gauge side plates.
  • Side plates are bolted and welded to the base angles for extra strength.
  • Six spacers between the side plates, three prevent cables from escaping the sheave grooves.
  • Base angles punched with alternating slots and holes for simple easy installations.
  • Mounting clips available, please provide steel dimensions.
  • Underhung blocks may need to be welded to head beams after final alignment. Clip angles are recommended for double beam mounting. Mounting with clips or to single beams will require welding. Consult the factory for specific information.
  • Head block capacities are affected significantly by mounting conditions, see the “More Info” tab for tables of capacities

 

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