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The
crown frame is made of high strength steel shapes.
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Sheave grooves are hardened by
medium frequency induction to provide extended service
life.
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Working sheaves have double row
conical rooler bearings and each bearing is individually
lubricated.
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The rope guard prevents the wire
rope from running out of the sheave grooves.
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Equipped with wooden bumper blocks
and retainer net.
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Equipped with a frame crane for use
when repairing the sheave groups.
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Equipped with sand line sheaves and
auxiliary sheaves.
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The sheaves and bearings are
interchangeable with those of matching traveling block.
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The crown blocks conforms to API
specification 4F and API monogram id permitted to be used.
