There are many factors that must be taken into account when assessing the suitability of a cable stocking for a proposed application and trying to calculate a pulling capacity.
These include:
Please note: Cable stockings must be double securely seized and/or taped before being pulled
This is the calculated average based on actual testing done by the manufacturer. Minimum breaking loads are quoted as a guide only.
Application pulling load is normally calculated to be reduced by at least a factor of 3x the approximate break load. Due to the wide variety of application parameters, the end user must apply a sensible safety factor to suit the safety requirements for the conditions of use.
The Pulling Capacity of a cable stocking will depend on the Factor of Safety (FOS) applied to the Minimum Breaking Load (MBL).
Where the operational risk is considered to be normal, it is recommended that a FOS of 3 be applied, for a high risk operation a significant increase of FOS should be considered. It is impossible to catalogue or guarantee a safety factor that will apply for all applications.
Minimum Breaking Loads mentioned on any statement, the recommended Factors of Safety, and any implied or stated fitness for purpose, are all only applicable when the cable stocking is as new and unused. Torsional stress must be dealt with when using stockings for line pulls and wire splices. When twisting forces are present use a swivel that rotates under load to release torsional stress.
Cable Stocking Safety Information
Typical configurations
Please note that cable stockings are a custom made product and below mentioned range and tonnages are as examples
| Cable capacity range | Pulling force | Item |
|---|---|---|
| t | ||
| 08-15 mm ø | 0.52 T | VRD110- + length |
| 15-20 mm ø | 0.71 T | VRD115- + length |
| 20-30 mm ø | 0.88 T | VRD120- + length |
| 30-40 mm ø | 1.06 T | VRD130- + length |
| 40-50 mm ø | 2.18 T | VRD140- + length |
| 50-60 mm ø | 2.18 T | VRD150- + length |
| 60-80 mm ø | 2.90 T | VRD160- + length |
| 80-100 mm ø | 4.65 T | VRD180- + length |
| 100-120 mm ø | 5.17 T | VRD1100- + length |
| 120-160 mm ø | 8.68 T | VRD1120- + length |
| 140-190 mm ø | 10.13 T | VRD1140- + length |
| 180-250 mm ø | 13.02 T | VRD1180- + length |
| 220-320 mm ø | 15.91 T | VRD1220- + length |
| 280-450 mm ø | 20.25 T | VRD1280- + length |
PLEASE NOTE: The condition of the cable stocking should always be checked prior to use. The correct size of stocking should always be used for the intended application. The rated capacity of the stocking should never be exceeded. Stockings that are worn, bent or otherwise damaged should not be used.
Please note that cable stockings are a custom made product and below mentioned range and tonnages are as examples.
| Cable capacity range | Pulling force | Item |
|---|---|---|
| t | ||
| 08-15 mm ø | 0.52 T | VRD310- + length |
| 15-20 mm ø | 0.71 T | VRD315- + length |
| 20-30 mm ø | 0.88 T | VRD320- + length |
| 30-40 mm ø | 1.06 T | VRD330- + length |
| 40-50 mm ø | 2.18 T | VRD340- + length |
| 50-60 mm ø | 2.18 T | VRD350- + length |
| 60-80 mm ø | 2.90 T | VRD360- + length |
| 80-100 mm ø | 4.65 T | VRD380- + length |
| 100-120 mm ø | 5.17 T | VRD3100- + length |
| 120-160 mm ø | 8.68 T | VRD3120- + length |
| 140-190 mm ø | 10.13 T | VRD3140- + length |
| 180-250 mm ø | 13.02 T | VRD3180- + length |
| 220-320 mm ø | 15.91 T | VRD3220- + length |
| 280-450 mm ø | 20.25 T | VRD3280- + length |
PLEASE NOTE: The images shown here use double weave cable stockings. When lacing single weave cable stockings please use single wire lace; use double-laced for double weave cable stockings; and use triple-laced for triple weave cable stockings.
