There areseveral forms of four ropes, pair ropes and one rope, fit various crane, and used for bulk cargo of homogeneous granularity (average granularity ≤30mm,maximum granularity≤100mm.) Following is an example for your reference only. Performance: The specification of the rope dual scoop grab bucket: Four roe ore grabTZD-36/13.1-P-4Capacity - 36 Ton36TOre / Pellet Density30-100MMAngle of repose27.5°Grab capacity13.1 M3Own Weight11.1TCrane Load ( 1.9 t/Cu.Mtr)1.9T/CU.MDia of closing Rope - mmΦ36MMDia of Pulleys - mmΦ720MM(DIA)No of Pulleys8PCS, 5-FOLDClosing Rope BalanceBALANCE BY ARMHolding Rope BalanceBALANCE BY BEAMDist Betn closing ropes360MMDist Betn holding ropes900MMHeight Open5463MMHeight Closed4598MMWidth3910MMSpread4772MMScale Length3170MMClosing Rope Length25854MMRope Withdrawn Length12943MMGrab Scale PlatesHardox-400Grab Scale KnivesHardox-400ArmsQ345(16Mn)PulleysQ345(16Mn)Pulley BlocksQ345(16Mn)Pulley Pins45#Guide Rollers42CrMo