Bridon - Teyseer Group

General Guidance on Rope SelectionWire rope on adjacent drum wraps can cause point contact andaccelerated wear.Corrosion resistanceThere are some applications where the use of a galvanized wirerope may be beneficial. If corrosion is not a significant issuerelating to rope life then a bright rope can be selected.Where moisture can penetrate the rope and attack the core,plastic impregnation (PI) can be considered.Non-Dyform wire rope on adjacent drum wraps can cause pointcontact and accelerated wear.Selection of a Dyform product will reduce abrasion throughimproved contact conditions.In order to minimize the effects of corrosion it is importantto select a wire rope with a suitable manufacturing lubricant.Further advantages can be gained by lubricating the roperegularly in service.Rope ExtensionIf rope extension is critical refer to technical data on page 47.ORDERINg A ROpEThe smooth surface of Dyform rope creates better contact andleads to longer life.Crush ResistanceIn multi-layer spooling applications where there is more thanone layer of rope on the drum it is essential to install the ropewith some back tension. Bridon recommends an installationtension of between 2% and 10% of the minimum breaking forceof the rope. If this is not achieved, or in certain applicationswhere high pressure on underlying rope layers is inevitable e.g.a boom hoist rope raising a boom from the horizontal position,severe crushing damage can be caused to underlying layers.Selection of a steel core as opposed to a fiber core will helpthis situation. Additional resistance to crushing is offered by aConstructex or Dyform rope resulting from its high steel fill-factor.Communicate as much background information as possible whenordering or inquiring about wire rope. The following is necessary:Application / intended useRope length and tolerance where applicableNominal diameterConstruction, class or brand nameCore(FC; WSC; IWRC)Rope grade(IpS, EIp, EEIp)Wire finish(Bright; galvanized)Lay type(Regular; Lang)Lay direction(Left hand; Right hand)Minimum breaking forceTermination requirementsSpecial packaging requirementsSpecial identification requirementsThird party authority(Lloyds Register; DNV; ABS etc.)Applications where severe crushing is the mode of deteriorationwill benefit from the use of Constructex.8 BRIDON North American Catalog