Closed type mounting blocks consist of a roller, the axis of which is located between two plates (cheeks), reinforced with pull rods, possible version of blocks: with hook, with pin.
Mounting blocks with hinged jaw facilitate rope stocking and thus reduce the time and labour costs associated with their use.
They are used to change the direction of pull and reduce the pulling force during rigging operations. It is used in both manually and electrically driven machines.
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