Nihon Bisoh BISOMAC308, Руководство оператора, Страница: 39 / 58

Nihon Bisoh Co., Ltd. BISOMAC308 1Phase&3Phase MM2015/9 KH-2015001
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A Loose, kinked, crushed, bird caged wire rope, waviness (more than 4/3d) or
any damage resulting in distortion of the rope structure.
B More than 10% of single wire is broken in one lay. (Fig.10)
Example: Wire Rope construction 6 x 19
6 x 19 = 114 wires x 10 % = 11 wires
C In case the average diameter of wire rope is;
5/16inch (8mm) Dropped below
φ
0.307inch. (7.8mm
）
Exceeded
φ
0.331inch.(8.4mm)
D Pitting on wire surfaces due to rusting corrosion.
E Evidence of exposure to temperatures above 200
゜
F (93
゜
C).
•
With the load applied on the wire rope, measure the average value by
taking measurement of diameter of circumcircle at two diagonally opposite
places. Take measurement at few places in the length direction of rope.
(Fig.11)
Picture. 2
1 pitch
Fig. 10