WIRE ROPE SWIVELS
Wire Rope Swivels provide a means of counteracting the twist in friction winder balance ropes. The lay length of the balance rope tends to shorten as each conveyance in turn approaches the bottom landing. The swivel allows the rope to spin and regain its normal lay length. Although Wire Rope Swivels are designed to meet the requirements of balance rope systems, they can be used in numerous additional applications. The swivels are designed not only for the changing suspended mass of the wire rope hanging from the conveyance, but also for the correct starting torque on the swivel bearings. The swivels are supplied with a lock-up device which may be applied as required. The swivels are protected against the ingress of water and foreign matter. Swivels must be properly maintained to ensure seizure does not occur. The swivels are available with tangs at both ends. They can also be supplied with a tang and a clevis or clevises at both ends. Swivels are designed to take the thrust load in one direction, and the housing is always mounted in the ‘top’ position. It is good practice to fit at least one right-angled chase block to minimise any lateral load on the swivel spindle. Most applications, however incorporate right-angled chase blocks at the top and bottom connections to the swivels. DESIGN The swivels are designed for static, dynamic and fatigue conditions incorporating a static safety factor in excess of 10:1 (15:1 on the threaded portion of the spindle and housing assembly). The manufacture is of 1.5% manganese steel to BS 2772, part 2 : 1989 Group 2 150M19 in the hardened and tempered condition for all the main load-bearing components except for the bearing.
LIFTING SALES DEPARTMENT
+2711 030 0400 | sales@shutterlock.co.za
Made with FlippingBook - Online magazine maker