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Specialty Strands - Logging Wire Ropes
- Standard wire ropes — 6x19 Classification
- Specialized wire ropes — 6-Pac, Super-B, Super-Pac
- Plastic-infused wire ropes — SKYBRITE®, BXL
6x19 Class Wire Rope
Strands: 6
Wires per strand: 19 to 26
Core: IWRC or fiber core
Standard Grade: Purple Plus
Lay: Regular or Lang
Finish: Bright or galvanized
The 6x19 Classification of wire rope is the most widely used. With its good combination of flexibility and wear resistance, rope in this class can be suited to the specific needs of diverse kinds of machinery and equipment. The 6x19 Seale construction, with its large outer wires, provides great ruggedness and resistance to abrasion and crushing. However, its resistance to fatigue is somewhat less than that offered by a 6x25 construction. The 6x25 possesses the best combination of flexibility and wear resistance in the 6x19 Class due to the filler wires providing support and imparting stability to the strand. The 6x26 Warrington Seale construction has a high resistance to crushing. This construction is a good choice where the end user needs the wear resistance of a 6x19 Class Rope and the flexibility midway between a 6x19 Class and 6x37 Class rope.
6x36 Class Wire Rope
Strands: 6
Wires per strand: 27 to 49
Core: IWRC or fiber core
Standard Grade: Purple Plus
Lay: Regular or Lang
Finish: Bright or galvanized
The 6x36 Class of wire rope is characterized by the relatively large number of wires used in each strand. Ropes of this class are among the most flexible available due to the greater number of wires per strand, however their resistance to abrasion is less than ropes in the 6x19 Class. The designation 6x36 is only nominal, as in the case with the 6x19 Class. Improvements in wire rope design, as well as changing machine designs, have resulted in the use of strands with widely varying numbers of wires and a smaller number of available constructions. Typical 6x37 Class constructions include 6x33 for diameters under 1/2", 6x36 Warrington Seale (the most common 6x37 Class construction) offered in diameters 1/2" through 1-5/8", and 6x49 Filler Wire Seale over 1-3/4" diameter.
SUPER-B Swaged
- Recommended for applications where abrasion and fatigue resistance is required, such as for winch lines, chokers, skylines, and haul backs, as well as any application where a swaged rope is used
- Manufactured right regular lay in a 6x26 construction
- Provides excellent resistance to abrasion and multilayer drum crushing
- OffersEEIP+ breaking strength
SUPER-PAC
Strands: 6
Wires per strand: 26/31
Core: IWRC
Standard grade(s): Royal Purple Plus
Lay: Right Regular
Finish: Bright
SUPER-PAC is a double compacted product ideal for applications where abrasion and drum crushing are an issue. When compared with standard ropes, SUPER-PAC provides: Better resistance to multi-layer drum crushing. SUPERPAC dramatically reduces the damage at cross over points on smooth face drums, such as those found on many boom hoist systems on mobile cranes. This is achieved by compaction of the strands and the rope, making a tough but flexible product.
Abrasion Resistance. The compaction process also increases the contact between the rope and the drum and sheaves, reducing sheave and drum wear.
Super Strength. The double compaction process also increases the minimum breaking strength of standard EIP rope more than 20%.
Superior Fatigue Resistance. SUPER-PAC is engineered for overall performance, its wire tensile strength being the key to its superior fatigue resistant properties. In addition to contribution to SUPERPAC’s EEEIP breaking strength, the wire used in the manufacture of SUPER-PAC remains ductile, minimizing the occurrences of external and internal wire breaks caused by operating stresses.
Application. SUPER-PAC is ideal for all types of boom hoist and lowering ropes.
6-PAC
Strands: 6
Wires per strand: 19 to 36
Core: IWRC
Standard grade(s): Royal Purple
Lay: Right Regular
Finish: Bright
6-PAC is recommended for use where the rope is subjected to heavy use or where conditions are extremely abusive, such as offshore pedestal, crawler and lattice boom equipped truck crane boom hoist applications. 6-PAC is also recommended for winch lines, overhead cranes, multipart hoist lines where rotation-resistant ropes are not required, and other applications where flexibility, high strength and resistance to crushing are important, and a cost-effective 6-strand rope is desired.
6-PAC provides:
Fatigue Resistance. Improved fatigue properties are derived from the combination of 6-PAC's flexible constructions and the compacted strands. The compacted strand surface minimizes the interstrand and interlayer nicking that take place in standard 6-strand ropes.
Abrasion Resistance. 6-PAC's compacted strand design provides improved abrasion resistance as compared to standard 6-strand ropes because of the increased wire and strand surfaces contacting sheaves and drums.
Flexibility. 6-PAC's design provides increased flexibility, making it easy to install, and 6-PAC also offers better spooling at high line speeds.
Resistance to multilayer.
Drum Crushing. 6-PAC dramatically increases the amount of wire contact with the drums and sheaves, reducing the wire rope, sheave and drum wear normally associated with standard wire rope.
Damage at the crossover points is also reduced.
BXL
Strands: 6
Wires per strand: 19 to 36
Core: IWRC
Standard grade(s): Purple Plus
Lay: Regular or Lang
Finish: Plastic-infused
BXL is infused with a specially- engineered polymer, creating a well-balanced matrix. BXL is recommended for numerous hoist, marine and logging rope applications. BXL provides: Fatigue Resistance. Improved fatigue resistance is derived from the cushioning and dampening effect of the polymer on the wires and strands. BXL also evenly distributes stresses which may lead to fatigue breaks.
Abrasion Resistance. The polymer acts as a barrier between the individual strands, preventing penetration of any adverse material. BXL distributes and reduces contact stresses between the rope and sheave, reducing wire rope wear.
Resistance to multilayer.
Drum Crushing. BXL’s smooth profile evenly distributes crushing pressures from the overlying layers of rope in multilayer drum winding applications.
Extended sheave and drum.
Service Life. BXL minimizes corrugation and wear normally associated with standard rope usage by restricting water and dirt penetration and eliminating pickup of abrasive materials.
Clean Handling. The exterior rope surface is free from the grease normally applied to standard ropes.
SKYBRITE
- Recommended solely for choker ropers used in helicopter logging operations
- Manufactured right regular lay in a 6x26 IWRC construction in EIP grade
- Fluorescent pink for high visibility
