Rope Lay Direction Versus Drum Grooving

Be sure to use the correct rope lay direction for the drum. This applies to smooth, as well as to grooved drums.

Many crane models have a two sided grooved drum, one part of it is left, the other right lay grooved. Some wire ropes are more sensitive to this type of design than others; it depends on lifting height, frequency of use, and even the rope diameter as to the type of wire rope most suitable for that application.

In some applications it may be advisable to select the rope lay direction according to the most frequently used drum layers. If the first rope layer on a drum is used as a ‘guide layer’ only, it may be advisable to select the rope lay direction according to the second layer.

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Right Hand Grooved: Use Left Hand Rope	Left Hand Grooved: Use Right Hand Rope
top:20px;”>Right Lay Rope	top:20px;”>Left Lay Rope
Left Hand Grooved: Use Right Hand Rope	Right Hand Grooved: Use Left Hand Rope

Left Lay Rope	Right Lay Rope
Right Hand Grooved: Use Left Hand Rope	Left Hand Grooved: Use Right Hand Rope
The easiest way to identify correct match between rope and drum is to look alongside the drum axis and the rope axis: the direction of lay/drum groove must be opposite to each other.

Overwind from left to right: Use Right Hand Rope	Underwind from right to left: Use Right Hand Rope
Overwind from right to left: Use Left Hand Rope	Underwind from left to right: Use Left Hand Rope