Wire Rope
 Wire Rope
Wire Ropes

6x19 & 6x36

Rotation-Resistant

Premium Value

Swaged

Specialty Small Ropes

Wire Rope Slings

Single Part Body

Grommet

 Wire Rope
 Support
Rope Selection

Construction

Classifications

Special Construction

Cores

Basic Types

Lay

Measuring Dia.

Rope Inspection and Removal

Inspection

What to Look For

Wear/Abuse

Removal Criteria

Extending Rope Service

Warnings



Support: Rope Inspection and Removal:
Removal Criteria


A major portion of any wire rope inspection is the detection of broken wires. The number and type of broken wires are an indication of the rope's general condition and a benchmark for its replacement.

Frequent inspections and written records help determine the rate at which wires are breaking. Replace the rope when the values given in the table below are reached.

Valley wire breaks -- where the wire fractures between strands or a broken wire protrudes between strands -- are treated differently than those that occur on the outer surface of the rope. When there is more than one valley break, replace the rope.

Broken wire removal criteria cited in many standards and specifications, like those listed below, apply to wire ropes operating on steel sheaves and drums. For wire ropes operating on sheaves and drums made with material other than steel, please contact the sheave, drum or equipment manufacturer or a qualified person for proper broken wire removal criteria.

 

# OF BROKEN WIRES
IN RUNNING ROPES

# OF BROKEN WIRES IN STANDING ROPES

Standard

Equipment

In one rope lay

In one strand

At end connection

In one rope lay

At end connection

ASME/B30.2

Overhead & gantry cranes

12**

4

N/S

Not Specified

ASME/B30.4

Portal, tower, & pillar cranes

6**

3

2

3

2

ASME/B30.5

Mobile & locomotive cranes

Running ropes

6**

3

2

3

2

Rotation-resistant ropes

2 randomly distributed broken wires in 6 rope dia.or 4 randomly distributed broken wires in 30 rope dia. **

ASME/B30.6

Derricks

6**

3

2

3

2

ASME/B30.7

Base-mount drum hoists

6**

3

2

3

2

ASME/B30.8

Floating cranes and derricks

6**

3

2

3

2

ASME/B30.16

Overhead hoists

12**

4

N/S

Not Specified

ANSI/A10.4

Personnel hoists

6**

3

2

2**

2

ANSI/A10.5

Material hoists

6**

Not Specified

Not Specified

**Also remove for 1 valley break.