RIGGING Call us 718.361.2300 or Fax 718.937.5671 or email us at: [email protected]www.cmftool.com Wire Rope Technical Data Common Classification of Wire Rope 6 x 7 Class Wire Rope: 6 Strands, 7 wires per strand This construction is used where ropes and dragged over the ground or over rollers and resistance to wear abrasion are important factors. The wires are quite large and will stand a great deal or wear. The 6 x 7 is a stiff rope and needs sheaves and drums of large sizes. It will not stand bending stresses as ropes witha large number of wires. 6 x 19 Class Wire Rope: 6 Strands, nominally 19 main wire per strand This class is most widely used and is found in its many variations thoughout nearly all industries. With its 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 designation of 6 x 19 is only nominal as the number of wires per strand ranges from 15 to 26. 6 x 37 Class Wire Rope: 6 Strands, 37 wires per strand The 6 x 37 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, but their resistance to abrasionis less than the 6 x 19 class. The designation of 6 x 37 is again only nominal as in the 6 x 19 class. 19 x 7 Rotation Resistant Wire Rope The 19 x 7 rotation resistance rope consists of an inner layer of 6 strands of 7 wires each, made left lang lay over a strand core, and an outer layer of 12 strands, each of 7 wires, made in right regular lay. It is this combination of opposing lays which enables the rope to resist the tendency to rotate when in service. How to Caliper Wire Rope Rope diameters are determined by measuring the circle that just touches the extreme outer limits of the strands - that is, the greatest dimension that can be measured with a pair of parallel-jawed calipers or machinists caliper square. A mistake could be made by measuring the smaller dimensions. rollers arge and and drums er of wires. r strand t nearly all s class ment. ranges r of wires ble, but 6 x 37 is f 7 wires s, each which
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Wire Rope
Technical DataCommon Classification of Wire Rope6 x 7 Class Wire Rope: 6 Strands, 7 wires per strandThis construction is used where ropes and dragged over the ground or over rollers and resistance to wear abrasion are important factors. The wires are quite large and will stand a great deal or wear. The 6 x 7 is a stiff rope and needs sheaves and drums of large sizes. It will not stand bending stresses as ropes witha large number of wires.
6 x 19 Class Wire Rope: 6 Strands, nominally 19 main wire per strandThis class is most widely used and is found in its many variations thoughout nearly all industries. With its 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 designation of 6 x 19 is only nominal as the number of wires per strand ranges from 15 to 26.
6 x 37 Class Wire Rope: 6 Strands, 37 wires per strandThe 6 x 37 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, but their resistance to abrasionis less than the 6 x 19 class. The designation of 6 x 37 is again only nominal as in the 6 x 19 class.
19 x 7 Rotation Resistant Wire RopeThe 19 x 7 rotation resistance rope consists of an inner layer of 6 strands of 7 wireseach, made left lang lay over a strand core, and an outer layer of 12 strands, eachof 7 wires, made in right regular lay. It is this combination of opposing lays which enables the rope to resist the tendency to rotate when in service.
How to Caliper Wire RopeRope diameters are determined by measuring the circle that just touches the extreme outer limits of the strands - that is, the greatest dimension that can be measured with a pair of parallel-jawed calipers or machinists caliper square. A mistake could be made by measuring the smaller dimensions.
rollers arge and and drums er of wires.
r strandt nearly alls class ment. ranges
r of wires ble, but 6 x 37 is
f 7 wiress, eachwhich
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Wire Rope
Power Strand Wire RopePreformed 6x19 Classification
MEETS DESIGN REQUIREMENTS ACCORDING TO FEDERAL SPECIFICATION RRW-410D
6 x 19 Bright- Having 19 to 26 wires per strand.This classification of wire rope affords the greatest varierty of application, and is generally themost popular for the following uses: dozers, draglines, derricks, scrapers, excavators, pile drivers, hoists, mining ropes, railroad car pullers and retarders, crane rigging, ship cargo runners and topping lifts, logging chokers, arch-lines, and general purpose wire rope slings.
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Wire Rope
Power Strand Wire RopePreformed 6x37 Classification
MEETS DESIGN REQUIREMENTS ACCORDING TO FEDERAL SPECIFICATION RRW-410D
6 x 37 Bright- Having 27 to 49 wires per strand.A more flexible class of wire with some of the following popular uses: tag lines, flexible loadbinders and slings, trip lines, side boom lines, mining skip hoists, mining machine lines and winch lines, drilling, horsehead lines, tong lines, and casing lines.
6 X 37BRIGHT
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Wire Rope
Power Strand Wire RopeGalvanized 6x19 Improved Plow Steel
MEETS DESIGN REQUIREMENTS ACCORDING TO FEDERAL SPECIFICATION RRW-410D
6 x 19 Galvanized.Approximately the same general application as 6 x 9 bright, but where extra resistanceto corrosion is required. Continuous bending around sheaves and drums should be avoided. Examples: Shroud lined for the marine industry.
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Power Strand Wire Rope19 x 7 Rotation Resistant Wire Rope
The 19 x 7 rotation resistant wire rope has beendeveloped for services where a minimum rotationor spinning of the rope is highly desirable. it is particularly applicable for the lifting or lowering of free loads with single-part line only.
MEETS DESIGN REQUIREMENTS ACCORDING TO FEDERAL SPECIFICATION RRW-410D
1 x 7 Galvanized Steel StrandDiam.Inches
Construction Weight PerFoot Approx.
(lb)
Work LoadLimit (tons)
1/45/163/8
1 X 71 X 71 X 7
.121
.205
.273
.661.121.64
MEETS DESIGN REQUIREMENTS ACCORDING TO ASTM SPECIFICATION A475-CLA
Guy Wire. Used for Standing rigging.
6 x 24 Galvanized Mooring LineDiam.Inches
Construction Weight PerFoot Approx.
(lb)
Work LoadLimit (tons)
1/25/83/47/81
6 x 246 x 246 x 246 x 246 x 24
.35
.54
.781.061.28
1.682.603.725.046.56
MEETS DESIGN REQUIREMENTS ACCORDING TO ASTM SPECIFICATION A475-CLA
This second layer of wires in each strand makes this Marine Cable suited for mooring lines. In addition, the wires add considerable strength to this construction,though reducing flexibility somewhat.somewhat.
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Wire Rope
Power Strand Wire Rope
6 x 7 Heavy Galvanized Trawl CableDiam.Inches
Construction Weight PerFoot Approx.
(lb)
Work LoadLimit (tons)
MEETS DESIGN REQUIREMENTS ACCORDING TO FEDERAL SPECIFICATION RRW-410D
This rope is used for standing rigging on shipsand for guying derricks, smokestacks, towersand similar equipment ashore. Also used inthe fishing industry. 1/4
5/163/8
7/161/2
9/165/83/4
7 x 7 x 7 Cable-Laid Wire RopeDiam.Inches
Construction Weight PerFoot Approx.
(lb)
Work LoadLimit (tons)
MEETS DESIGN REQUIREMENTS ACCORDING TO FEDERAL SPECIFICATION RRW-410D
Used for making very flexible wire-rope slings.
1/43/81/25/83/47/81
1-1/81-1/4
6 x 76 x 76 x 76 x 76 x 76 x 76 x 76 x 7
.094.15.21.29.38.48.66.95
.48
.741.051.421.952.342.364.24
7 x 7 x 77 x 7 x 77 x 7 x 77 x 7 x 7
7 x 7 x 197 x 7 x 197 x 7 x 197 x 7 x 197 x 7 x 19
.11
.21
.37
.58
.881.191.561.942.39
.651.432.343.704.876.227.859.48
13.01
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Specialty & High PerformanceWire Rope Tower Strand 35
Approvals“TOWERSTRAND-35” is accepted by AmericanCranes, Grove, Manitowoc, P&H, other American and imported mobile cranes where the hoist req-uirements demand an alternative to six-strand rope constructions and when the Rated BreakingStrengths are met by the Minimum Breaking loadsof “TOWERSTRAND-35”.
35 x 7
Low Rotation PropertiesThe comparison below shows how “TOWERSTRAND-35” compares with conventional products.
Torque Turn % ft19 x 7 RRL 5.6 156 x 25 RRL 7.5 200ENDURANCE 35LS .76 1
The low values of rotation allow “TOWERSTRAND-35” to be used both in single-part line with swivel attachment at the hook, or in multi-part line where the swivel may be considered as a convenience rather than a necessity.Crush ResistanceThe high steel content available for “TOWERSTRAND-35” provides good resistance to crushingon multi-strand layer drums. At the same time the design gives excellent flexibility so that spool-ing to low D:d ratios creates no problem.Bend Fatigue ResistanceThe selection of D:d ratios exceeding 14:1 create substantial improvemend in bend fatigue. Sim-ilarly appropriate service lubrication may substantially enhance cycle life.
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Wire Rope
High Performance Wire RopePower Strand 18/6
Power Strand-6
Power Strand-18 Rotation Resistant Ropes
.27
.37
.51
.64
.791.11.52.02.53.1
3/87/161/29/165/83/47/81
1-1/81-1/4
Diameter,Inches
8.311.214.618.522.732.443.857.571.587.9
Nominal Strength,Tons
Approx.wt./ft., lb.
.31
.39
.51
.63
.781.131.542.002.543.143.84.5
3/87/161/29/165/83/47/81
1-1/81-1/41-3/81-1/2
Diameter,Inches
8.811.915.319.322.732.443.857.571.587.9
106.0125.0
Nominal Strength,Tons
Approx.wt./ft., lb.
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Power Strand
Galvanized Aircraft Cable
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