Qingdao Haosail Machinery Co., Ltd.

A: "W" stands for Warrington, which is the arrangement of the steel wires in the strand: the outer layer is composed of 6 thick steel wires and 6 thin steel wires arranged alternately, and the inner layer is 6 steel wires + 1 center wire, with a total of 19 wires/strand.

The core difference with the same series lies in the performance balance:

Compared to 6×19 (filled): no weak filling wire, the outer layer of thick steel wire improves wear resistance and has higher breaking tensile force;

Compared to 6×19S (Sirru): the outer layer has thin steel wire intervals, better flexibility, better fatigue resistance, but slightly lower wear resistance.

A: Suitable.

The "thick and thin alternating" arrangement of the outer layer of steel wires makes the strands moderately rigid, the stress is more evenly dispersed when bending, and the fatigue resistance is better than 6×19S (all thick outer layer). For example: in scenarios where frequent rope winding is required, such as small winches and elevator door machine traction, the life of 6×19W is usually longer.

A: It is not easy to break under normal use, but it should be noted that:

The main function of the thin steel wire is to "fill the gap" and "buffer stress", and it does not bear the main load. If the outer thick steel wire is severely worn (diameter reduction> 10%), the thin steel wire may break due to excessive force;

Avoid direct friction between the wire rope and sharp objects (thin steel wire has weak shear resistance), otherwise it may break alone.

A: You can judge by "scenario priority":

If wear resistance is the first priority (such as tower crane winch, heavy crane): select 6×19S;

If flexibility is the first priority (such as small radius pulley traction, frequent bending): select 6×19 (filled);

If a balance between wear resistance and flexibility is required (such as medium-sized hoisting, general traction): select 6×19W.

A: Not recommended.

6×37 belongs to the "fine steel wire multi-strand" structure (37 strands per strand), and its flexibility is much better than 6×19W, which is suitable for small pulleys and multi-turn scenarios (such as elevator traction); while 6×19W has higher rigidity, and forcibly using it in small radius bending scenarios will cause excessive fatigue of the steel wire and shorten its life.