Crosby McKissick 731 Crown Blocks

  • McKissick Roll-Forged™ sheaves with flame hardened grooves.
  • Double row pre-adjusted sealed tapered bearings mounted on a steel shaft.
  • Heavy center and side plates for proper support of center pin.
  • Pre-assembled units for rapid attachment to crown assembly for installation on derrick.
  • On multiple sheave assemblies, one sheave can be grooved for sand line on request.
  • Other sizes available upon request.
  • Sheaves manufactured to API-8A specifications.
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