P.O. Box 96406
Oklahoma City, OK 73149

Phone (405) 631-7728
Fax (405) 631-7893

Ropes

DRILL LINES (BRIGHT)

According to Federal Specification RR-W-410D. Meets the performance requirements of proposed A.S.T.M. National Standard on Wire Rope for General Purposes, as applicable. Bright, heavy lube, preformed.

 

Diameter Inches
Construction
Approx.
Weight per Ft. in
Pounds
Breaking
Strength
in Tons*
5/8
6x21 poly core LEFT LAY
.66
16.7
5/8
6x26 poly core RIGHT LAY
.66
16.7
5/8
6x21 iwrc LEFT LAY
.72
20.6
3/4
6x21 poly core LEFT LAY
.95
23.8
3/4
6x26 poly core RIGHT OR LEFT LAY
.95
23.8
3/4
6x26 iwrc RIGHT OR LEFT LAY
1.04
29.4
3/4
6x31 poly core LEFT LAY
.95
23.8
3/4
6x31 iwrc RIGHT OR LEFT LAY
1.04
29.4
7/8
6x21 poly core LEFT LAY
1.29
32.2
7/8
6x26 iwrc RIGHT OR LEFT LAY
1.42
39.8
7/8
6x31 iwrc LEFT LAY
1.42
39.8
1
6x21 poly core LEFT LAY
1.68
41.8
1
6x26 iwrc RIGHT OR LEFT LAY
1.85
51.7
1.1/8
6x19S iwrc
2.34
65.0
1.1/4
6x19S iwrc
2.89
79.9
 

 

SAND LINES (BRIGHT)

According to Federal Specification RR-W-410D and API-9A. Meets the performance requirements of proposed A.S.T.M. National Standard on Wire Rope for General Purposes, as applicable. Poly core, bright, heavy lube, preformed, IPS, RRL.

 

Diameter Inches
Construction
Approx.
Weight per Ft.
in Pounds
Breaking
Strength in
Pounds*
9/16
6 x 7
.48
26,000
5/8
6 x 7
.59
31,800

6 x 7 PC

WIRE ROPE

 

IMPORTANT WARNINGS
Failure to follow warnings and instructions can result in serious injury or death.

WIRE ROPE IS A MACHINE. Understand and respect it.

Like any machine, it needs proper care and maintenance for optimal safety and long service life. For a better understanding of wire rope we highly recommend the Wire Rope Users Manual by the Wire Rope Technical Board. Excerpts of that manual have been reprinted in the wire rope section of our products pages.

Refer to the General Warnings above.

These warnings also apply to wire rope. Only additional warnings and information are listed below.

Rated Capacity.

Rated capacity is the load which a new wire rope may handle under given operating conditions and at assumed design factor. A design factor of 5 is chosen most frequently for wire rope. (Operating loads not to exceed 20% of catalog Breaking Strength.) Operating loads may have to be reduced when life, limb or valuable property are at risk or other than new rope is used. A design factor of 10 is usually chosen when wire rope is used to carry personnel. (Operating loads not to exceed 10% of catalog Breaking Strength.) Responsibility for choosing a design factor rests with the user.

Attachments must have at least the same Working Load Limit as the wire rope used.

Clips, sockets, thimbles, sleeves, hooks, links, shackles, sheaves, blocks, etc. must match in size, material and strength to provide adequate safety protection. Proper installation is crucial for maximum efficiency and safety.

Keep out from under a raised load.

Do not operate loads over people. Do not ride on loads. Conduct all lifting operations in such a manner that if equipment were to fail or break, no personnel would be injured. This means KEEP OUT FROM UNDER A RAISED LOAD, DO NOT OPERATE LOADS OVER PEOPLE AND KEEP OUT OF THE LINE OF FORCE OF ANY LOAD.

Avoid shock loads.

Avoid impacting, jerking or swinging of load. Working Load Limit will not apply in these circumstances because a shock load is generally significantly greater than the static load.

Inspect wire rope regularly.

Use inspection instructions as guidelines only. Two of the most important prerequisites for inspecting wire rope are technical knowledge and experience. Check the general condition of the wire rope. Also, look for localized damage and wear, especially at wire rope attachments. Inspect all parts that come in contact with the wire rope. Poor performance of wire rope can often be traced back to work or wrong-sized sheaves, drums, rollers, etc. Look for kinks, broken wires, abrasions, lack of lubrication, rust damage, crushing, reduction of diameter, stretch or other obvious damage. If any of these conditions exist or if there is any other apparent damage to the wire rope, retire the wire rope according to the instructions below.

When in doubt about the extent of the damage, retire the wire rope in question immediately. Without laboratory analysis, it is impossible to determine the strength of damaged or used wire. Thus, you will not be able to tell whether wire rope with any amount of damage is safe to use. Retire the wire rope that is damaged. For specific inspection procedures check various OSHA and ANSI publications.

Destroy, rather than discard, wire rope to be retired.

Wire rope that is not destroyed might be used again by someone not aware of the hazard associated with that use. Destroying wire rope is best done by cutting it up into short pieces.

Refer to General Information on Wire Rope below for important characteristics and properties of wire rope.

 

GENERAL INFORMATION ON WIRE ROPE


The three basic components of a typical wire rope. (Fiber core is shown.)


COMPONENTS:

Wire rope consists of three basic components.

1. Wires.

2. Strands, formed by wires, laid helically around a core.

3. Core, or center.

MATERIAL:

Steel grades in wide use today are IPS (improved plow steel), EIPS (extra improved plow steel),

 sometimes also referred to as XIPS, XIP, or EIP, as well as EEIPS (extra, extra improved plow steel.)

CORE:

Its function is to provide proper support for the strands under

normal conditions. Three types of core (or center) are commonly used.

1. Fiber Core (F.C.), usually polypropylene (P.C.), sometimes hemp (H.C.) and sisal.

2. Independent Wire Rope Core (IWRC)

3. Wire Strand Core (WSC)

IWRC and WSC are sometimes referred to as steel wire core or steel center.

CONSTRUCTION:

Expressed in numbers of strands x number of wires. 6 x 25 indicates

that the wire rope consists of 6 strands, which in turn have 25

individual wires. Constructions are grouped into classes:

6 x 7 Class: Containing 6 strands that are made up of 3 through 14 wires,

of which no more than 9 are outside wires.

6 x 19 Class: Containing 6 strands that are made up of 15 through 26 wires,

of which no more than 12 are outside wires.

6 x 36 Class: Containing 6 strands that are made up of 27 through 49 wires,

of which no more than 18 are outside wires.

8 x 19 Class: Containing 8 strands that are made up of 15 through 26 wires,

of which no more than 12 are outside wires.

19 x 7 Class: Containing 19 strands, each of which is made up of 7 wires.

8 x 19 and 19 x 7 class wire ropes have rotation-resistant properties, excludingelevator ropes. Other common constructions are 7x7 and 7x19 galvanized cable, which is sometimes referred to as "aircraft cable" although it is not intended for aircraft use. Also, 1x7 and 1x19 strand wire ropes, as well as 7x7x7, 7x7x19 cable-laid wire ropes. Many others exist, some for highly specialized applications only. Note that any class denotes the nominal number of wires in each strand. The actual number of wires may be different. For example, 6x36 class: strands most commonly consist of 36 wires, or 31, or 41.

STRAND PATTERNS:

They refer to different types of arrangements of wires and their diameters within a strand. Common strand patterns are Filler Wire, Seale, Warrington and combinations thereof.

LAY:

Indicates how the wires have been laid to form strands and how the strands have been laid around the core. A right regular lay rope (RRL; the most common) has its strands laid right on the rope - similar to threading a right-hand threaded bolt. Regular means that the direction of the wire lay in the strand is opposite to the direction of the strand lay in the rope. (The wires in regular lay rope appear to be in line with the axis of the rope).

Caution: When combining seperate ropes in a single line application always use ropes of the same lay pattern. Different lays can increase rotation at connection points decreasing rope efficiency.


Right Regular Lay (RRL)

Right Lang Lay (RLL)

Left Regular Lay (LRL)

Left Lang Lay (LLL)

PREFORMING:

A manufacturing process wherein the strands and their wires are permanently formed - during fabrication - to the helical shape that they will ultimately assume in the finished wire rope. Proper preforming prevents the strands and wires from unlaying during normal use. The vast majority of wire rope sold today is preformed.

FINISH:

Wire rope is either sold as "bright" (or "black") - meaning uncoated, or galvanized for better corrosion resistance. "Drawn Galvanized" wire has the same strength as bright wire, but wire, "galvanized at finished size" is usually 10% lower in strength. Plastic coated wire rope is also available, usually galvanized or stainless steel cable. The most common plastic coatings are nylon in either clear or white, although other materials and colors are available. These coatings do not add strength to the wire rope itself.

LUBRICATION:

During fabrication, wire ropes receive lubrication. The kind and amount depends on the rope's size, type and use, if known. This in-process treatment will provide the finished wire rope with ample protection for a reasonable time if it is stored under proper conditions. But, when the wire rope is put into service, the initial lubrication will normally be less than needed for the full useful life of the wire rope. Because of this, periodic applications of a suitable wire rope lubricant are necessary.

ORDERING WIRE ROPE:

Construction, lay, core, finish and other factors mentioned above impart greatly differing characteristics to different wire ropes. They must be understood and considered when selecting wire rope. There is no perfect wire rope for all applications; usually some less desirable properties are traded off for other, more desirable ones. Refer to the Wire Rope Users Manual by the Wire Rope Technical Board for a better understanding of wire rope properties and consult professional help when in doubt.

Lacking a complete description of the wire rope desired, a supplier can make several assumptions:

1. If direction and type of lay are omitted from the rope description, it is assumed to be right regular lay (RRL).

2. If finish is omitted, this will be presumed to mean ungalvanized, "bright" finish.

3. If no mention is made with reference to preforming, preformed wire rope will be supplied.

4. If a supplier receives an order for 6 x 19 wire rope he may assume this to be a class reference and is, therefore, legally justified in furnishing any construction within this category.


PROPER HANDLING OF WIRE ROPE

MEASURING OF WIRE ROPE

How to measure (or caliper) a wire rope correctly. Since the "true" diameter (A) lies within the circumscribed circle, always measure the larger dimension (B). Actual diameter can be 5% larger than nominal wire rope diameter.

RECEIVING AND STORING WIRE ROPE

Make certain that the wire rope received is the one that was ordered. Check for obvious damage to wire rope and reel. Store wire rope away from heat, moisture and other corrosive agents. This means storing under a weatherproof cover, off the ground, preferably in a dry, cool, well ventilated warehouse. If wire rope has to be kept outdoors, cover it with a coating of protective wire rope lubricant and cover both wire rope and reel with waterproof material. Keep it well off the ground. Careful inspection after extended storage is of utmost importance.

UNREELING OR UNCOILING WIRE ROPE

Great care must be taken when removing wire rope from reels or coils. Looping the rope over the flange of the reel or pulling the rope off a coil while it is lying on the ground will create loops in the line. If these loops are pulled tight, kinks will result, thereby permanently damaging the wire rope. Check illustrations below showing correct and incorrect ways of unreeling and uncoiling wire rope.

Whenever handling wire rope, take care not to drop reels or coils. This can damage wire rope and collapse the reel, making removal of the wire rope extremely difficult if not impossible.

REREELING WIRE ROPE

When reeling wire rope from one reel to another it is preferable for the wire rope to travel from top to top, as illustrated. Spooling from bottom to bottom is also acceptable, provided the surface over which the wire rope will travel is clean, smooth and dry, so as not to allow foreign particles to become embedded in the wire rope. Spooling from top to bottom or from bottom to top can put a reverse bend into wire rope and must be avoided. When stringing up on machinery wire rope should be removed from the reel in the same direction as placed on the drum.

CUTTING AND SEIZING WIRE ROPE

There are numerous ways to cut wire rope - use only appropriate tools specifically designed to cut wire rope. Safety goggles and work gloves must always be worn. Observe other precautions peculiar to the tools used. Wire rope should be properly seized on both sides of the cut with wire or strand. Seizing wire diameter and the number and length of the seizings will depend on the diameter of the wire rope, and whether or not it is preformed.

BREAKING IN NEW WIRE ROPE

Since wire rope is a machine with many moving parts, it requires careful installation and breaking in procedures for maximum safety and long service life. After proper installation, allow the wire rope to run through a cycle of operation at a very low speed. Keep a close watch on the wire rope, its attachments and any working parts such as sheaves, drums, rollers, etc. to make certain that the wire rope runs freely. If no problems appear at this stage, run the wire rope through several cycles of operation under light load at reduced speed. This procedure allows the component parts of the new rope to make a gradual adjustment to the actual operating conditions.

WIRE ROPE EFFICIENCY

Wire rope will develop 100% efficiency, that is, break at or above minimum acceptance strength (not less than 2 1/2% below nominal breaking strength) under controlled laboratory conditions. Once fittings such as sleeves, clips, sockets, etc. are attached and/or the wire rope passes over a curved surface such as sheaves, pins, etc. its strength is decreased. In the case of wire rope passing over a curved surface this decrease in strength depends on the severity of the bend. In the case of wire rope fittings, the decrease in wire rope strength will depend on the type of fittings used. The wire rope efficiency usually ranges from 70% - 100%. For more detailed information consult the strength efficiency of wire rope graph here. Note, that hand spliced wire rope, while not using any fittings, has less efficiency than properly flemished and swaged wire rope. There are other factors, depending on the application of wire rope, that can cause a decrease in nominal wire rope strength. They must be considered when choosing a design factor. Refer to the Wire Rope Users Manual and/or other qualified sources for details.

ELASTIC PROPERTIES OF WIRE ROPE

Wire rope is an elastic member; it stretches or elongates under load. This elongation can be permanent or recoverable. The extent of elongation will depend on the wire rope used and the design factor chosen. While it may be acceptable for many wire rope uses to neglect its elastic properties, they are of critical importance for some uses. When in doubt about the importance of wire rope elongation consult professional help. Pre-stretching wire rope will only remove some of the constructional stretch and will not totally eliminate elongation under load.

WINDING WIRE ROPE ON DRUMS

Installation of wire rope on a plain or grooved drum requires a great deal of care. Make certain the wire rope is properly attached to the drum. Keep adequate tension on the wire rope as it is wound onto the drum. Guide each wrap as close to the preceding wrap as possible, or follow the groove in case of a grooved drum. No blanket recommendations can be given concerning direction of winding, desirable drum diameter, fleet angle, etc. Consult the Wire Rope Users Manual for this and other important technical information.

WIRE ROPE SLINGS

Refer to ASME standard B30.9 and OSHA standard 1910.184 for design factors and other important information. Other standards and information may apply.


REEL CHART

Listed below are some of the most commonly used reels in our inventory and the approximate lengths of wire rope that will fit on the reels.

Reel Size
Rope Size
H x B x D
3/16"
1/4"
5/16"
3/8"
1/2"
5/8"
3/4"
7/8"
1"
1.1/8"
1.1/4"
1.3/8"
12"x6"x5"
500'
300'
200'
125'
blank
blank
blank
blank
blank
blank
blank
blank
18"x8"x8"
1800'
1200'
800'
600'
300'
blank
blank
blank
blank
blank
blank
blank
24"x16"x12"
6400'
3900'
2600'
2000'
1200'
800'
blank
blank
blank
blank
blank
blank
26"x16"x12"
8300'
5100'
3400'
2600'
1550'
1000'
625'
450'
blank
blank
blank
blank
28"x16"x12"
10300'
6400'
4300'
3300'
1900'
1200'
800'
570'
450'
blank
blank
blank
32"x16"x14"
blank
7800'
5200'
3700'
2350'
1550'
1100'
800'
600'
475'
blank
blank
36"x24"x16"
blank
13900'
9400'
6700'
4200'
2750'
1950'
1400'
1100'
850'
625'
blank
40"x22"x18"
blank
blank

13000'

9300'
5800'
3800'
2700'
1950'
1500'
1200'
900'
725'
42"x22"x18"
blank
19300'
blank

10000'

6250'
4100'
2900'
2100'
1600'
1300'
1000'
850'

REEL CAPACITY

Due to tolerances on diameters and variety of constructions of wire rope, it is difficult to calculate the maximum length of wire rope that can be spooled on a reel or drum. The formula below may be used to calculate reel capacities with at least one wire rope diameter below the flange diameter, for clearance ("X"). Calculated reel capacities are based on uniform rope winding on the reel.

L = (A + D) x A x B x K
L = length of wire rope in feet
A = depth of rope space on reel in inches
B = width of drum between flanges in inches
D = barrel diameter in inches
K = constant for given wire rope diameter (per table below)
H = diameter in reel flange in inches
X = clearance

Diameter
(inches)
K
1/16
49.8
3/32
23.4
1/8
13.6
5/32
8.72
3/16
6.14
7/32
4.59
1/4
3.29
5/16
2.21
3/8
1.58
7/16
1.19
Diameter
(inches)
K
1/2
0.925
9/16
0.741
5/8
0.607
11/16
0.506
3/4
0.428
13/16
0.354
7/8
0.308
1
0.239
1.1/8
0.191
1.1/4
0.152
Diameter
(inches)
K
1.3/8
0.127
1.1/2
0.107
1.5/8
0.0886
1.3/4
0.0770
1.7/8
0.0675
2
0.0597
2.1/8
0.0532
2.1/4
0.0476
2.3/8
0.0419
2.1/2
0.0380