why is wear minimum in lang's lay (rope)?

Answer 1

There are two main types of rope lay, viz: Ordinary Lay and Langs Lay. Ordinary lay is formed so that the twist direction of the completed rope strands, normally right hand, is opposite to that of the outer wires of the individual strands. Any of these lays may be manufactured with either right hand of left hand.

Langs Lay ropes are so formed that the twist direction of the completed rope strands are the same as that of the outer wires of the individual strands. Langs Lay formation gives greater resistance to wear and will usually last longer than rope of Ordinary Lay formation. There is, however, a tendency for Langs Lay to ‘kink’ and it is therefore recommended only for applications where the rope and load are secured against rotation. In most cases ropes are manufactured right hand lay, left hand lay can be supplied to meet specific requirements.

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