A-A-52015A
requirements specified herein. Optional equipment, for the purpose of this item description, may be defined as equipment not standard or normally furnished with the taglines but which is available to the commercial customer on an optional basis. Any additional equipment or accessories specified to satisfy military requirements shall also be considered optional and processed accordingly. The taglines shall be constructed, assembled, and equipped with all components, whether or not specified herein, necessary to enable the item to function reliably
and efficiently in sustained operation. The taglines shall conform to all Federal laws and regulations applicable for this type equipment which are in effect on the date of contract award.
3.2 Design. Taglines shall be of the independently operating, automatic reel type with an adjustable tension mechanism permitting desired tension to be attained by manually reversing the rotation of the tagline reel, or with desired tension preset during fabrication. The taglines shall consist essentially of a reel attached to one or more helical spring-loaded cylinders and a fairlead consisting of two sheaves, a bell cable guide, or a spiral spring-loaded reel and a fairlead consisting of two sheaves and two rollers. The taglines shall be capable of being mounted on either side of the crane boom, inside the crane boom, or on the gantry frame. Each tagline shall be complete and ready for operation with the reel filled with wire rope of proper size and length and with all parts necessary for installation.
3.2.1 Reel. The tagline reel shall be of sufficient size to accommodate all necessary wire rope as specified herein. Adequate means shall be provided to anchor one end of the rope to the reel.
3.2.2 Fairlead. The tagline fairlead shall consist of two sheaves, a bell cable guide, or two sheaves and two guide rollers connected to the tagline mechanism by a steel bracket. Fairlead sheaves shall be heat-treated hardened steel with smooth rope grooves. Groove diameters shall be not less than the diameter of the wire rope and the inside diameter of the bell cable guide shall be not less than the diameter of the wire rope specified herein.
3.2.3 Wire rope. Wire rope furnished with the tagline shall be 6 by 19, filler wire construction, improved plow steel, uncoated, fiber core, right regular lay. The diameter of the wire rope shall be not less than 5/16 inch with a nominal breaking strength of not less than 8,400 pounds. The terminal (outside) end of the wire rope shall be properly seized, fitted with a thimble suitable for the wire rope specified herein, and secured by not less than two cable clamps.
3.3 Performance. Taglines, when properly installed, shall be capable of providing sufficient tension to keep the crane load from turning and fouling the crane hoisting and closing lines. Tension exerted shall be sufficient for efficient performance through all operating cycles with a crone equipped with a boom of a length as specified in table I, positioned at a 60 degree angle, and with a clamshell bucket or similar attachment operating in any position from maximum height to not less than 20 feet below ground level. Taglines shall be equipped with sufficient wire rope to permit conformance to the payout capabilities specified in table I, with not less than two full wraps remaining on the reel.
2
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business