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beyond anything www.kiswire.com Measuring diameter Hardness of rope and groove An important factor in respect to surface pressure between rope and grooves, is the hardness of both the rope and the groove material. Groove hardness shall be slightly higher than the hardness of the wire rope. The other way around will cause damage to the grooves, which in return will damage the wire rope seriously. Formula to calculate surface pressure are available. Groove dimensioning Groove radius ® : minimum = 0.53 to 0.535 x d and maximum = 0.55 x d Groove dept (h) : 1.5 x d Throat angle : 35 to 45 degrees (for normal applications) Fleet angles The angle under which a rope moves between a drum and a sheave shall be between 0.5 and 2.5 degrees. Fleet angle is calculated from the sheave centre to the flanges of the drum. Too small or too big fleet angles cause the rope spool improperly. Either layers pile up on top of each other or layers leave gaps between each other on the drum. Too small fleet angles may cause the interlocking of the rope layers, which causes serious damage to the rope. In order to reduce this interlocking risk, compacted ropes are recommended. Compacted ropes have smoother surfaces than regular round strand ropes, which enhances a smoother sliding of ropes against each other. Kiswire is the largest wire rope producer in the world. Annually, about 140.000 tons of wire rope is delivered, worldwide. For decades, Kiswire is specializing in the development and production of wire rope. Meanwhile, the company has acquired a reputable and leading position in a great variety of markets, in literally all corners of the world. The offshore industry is one is a main market for Kiswire since 25 years, meanwhile. Technical Data Sheet 4 Lead Pulley Fleet Angle B Drum FLEET A Right Way Wrong Way d h
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