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Steel plate, Grades S225, 300WC, S355 are profiled and rolled to achieve wrapping diameter of the rope drum.
The sleeves are manufactured in halves and when dealing with sleeves over 5.5m, these are manufactured in quarters.
The machining is carried out on specialised jigging and tooling set ups that ensure exact likeness for double drum grooved sleeve arrangements.

Two types of cross over patterns are available from EET;

1) The older “z” type short cross over, used for applications with small drum diameters versus a proportionately large rope diameter

2) The “s” type cross over, used for D-d ratios that are achieved in mine winder applications and large marine application