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Pulling Grips
Pulling grips are flexible steel wire mesh sleeves that hold a cable, hlua, pipe or duct so it can be pulled, lowered or tensioned. Slide the mesh over the end, nruj qhov muag, and the weave closes radially on the jacket: the grip tightens as the pull load rises, so nothing has to be clamped or bolted to the cable. We braid them in our own workshop in galvanised steel or AISI 304 / 316 stainless hlau, for cable from 9 mm rau 160 mm, with single, ob npaug, hloov tau, rotating los yog offset ob lub qhov muag.
This page covers the range as a whole: how the mesh holds, which of the five constructions suits the pull you are doing, how to size a grip from the cable diameter and the expected line pull, and what the capacity on the label actually means. Each construction has its own page, linked from the table below.
How Wire Mesh Pulling Grips Hold a Cable
There is no mechanism inside a pulling grip. The grip is the weave, and it works in three stages:
- Xaub rau. Ntws lub mesh thiab thawb nws hla lub cable kawg kom txog thaum lub cable ncav cuag lub qhov muag. The mesh has to sit on the full gripping length, not just on the cable tip.
- Tension. Load on the eye lengthens the tube slightly and contracts it radially. Every wire in the weave closes on the jacket at once, so the pulling force becomes a uniform clamping force along the whole mesh.
- Tso tawm. Tshem cov kab thiab thawb lub mesh rau pem hauv ntej; the weave opens and the grip slides off. No tools, tsis muaj cim, no cut jacket.
Because the load is carried by friction spread over the mesh length, capacity comes from engagement length and the number of mesh layers, not from wire gauge alone. A 3.0 mm wire in a 300 mm mesh holds less than a 2.0 mm wire in a 1200 mm mesh. That is also why a pulling grip can drag a lead-sheathed or thin-wall cable that a clamp would crush, and why the same grip releases without leaving a mark.
Five Constructions, One Principle
Every type below uses the same wire mesh principle. What changes is the head, the way the grip closes, and the material – and those three things decide which pull it suits.
| Kev tsim kho | How it closes | Use it when | Nplooj |
|---|---|---|---|
| Cable pulling sock – kaw lub taub hau, ib qhov muag | Braided closed head, eye at the head | Straight pulls into a clean duct or conduit, cable end free | Cable rub thom khwm |
| Double eye pulling grip | Braided closed head with two eyes | Two lines, lashing, or a pull that has to be turned in line | Double eye grips |
| Offset eye pulling grip | Eye set off the mesh axis | Tight manholes and wall entries where the line must clear the duct wall | Offset eye grips |
| Lace-up hoisting tuav | Split mesh laced around the cable | A cable already installed, or a grip that cannot slide over a free end | Lace-up grips |
| Non-metallic pulling grip | Aramid or polyester mesh, tsis muaj hlau | Live circuits, fragile insulation, work where steel near conductors is not allowed | Non-metallic grips |
Material is a separate choice: the closed-head range is available in galvanised steel, AISI 304 los yog 316 stainless.
Sizing a Pulling Grip: Three Numbers
Three measurements decide the model, and getting them wrong is the usual reason a grip slips on the first pull.
- The true outside diameter where the mesh will sit. Measure over the jacket, over any tape or bedding, and over the whole bundle if you are pulling more than one cable. Nominal size is not the gripping size.
- The mesh length you can engage. A grip needs at least four to five times the cable diameter in mesh contact. Less than that and the load concentrates at the head.
- The expected line pull at the worst point of the run – start of pull, through bends, up a slope. The published capacity is a working load; keep the pull below it and add margin on a wet, greasy or polished jacket.
| Cable outside diameter | Minimum mesh engagement (4-5 x OD) | Standard mesh length | Qauv |
|---|---|---|---|
| 9-16 mm | 40-80 mm | 300 mm | CPS-16 |
| 16-25 mm | 64-125 mm | 450 mm | CPS-25 |
| 25-38 mm | 100-190 mm | 600 mm | CPS-38 |
| 38-50 mm | 150-250 mm | 700 mm | CPS-50 |
| 50-75 mm | 200-375 mm | 900 mm | CPS-75 |
| 75-100 mm | 300-500 mm | 1200 mm | CPS-100 |
| 130-160 mm | 520-800 mm | 1500 mm | PIB-160 |
Standard range shown. Mesh up to 3000 mm and diameters outside this table are made to order.
Standard Range and Pulling Capacity
The chart below is the standard galvanised range. Capacity is quoted as a working load with a 5:1 safety factor on the breaking strength, measured with the mesh fully engaged on a clean, dry cable.
| Qauv | Cable OD (mm) | Mesh ntev (mm) | Mesh wire (mm) | Rub lub peev xwm (kg) |
|---|---|---|---|---|
| CPS-16 | 9-16 | 300 | 1.5 | 750 |
| CPS-25 | 16-25 | 450 | 2.0 | 1,300 |
| CPS-38 | 25-38 | 600 | 2.0 | 1,800 |
| CPS-50 | 38-50 | 700 | 2.5 | 2,500 |
| CPS-75 | 50-75 | 900 | 2.5 | 3,500 |
| CPS-100 | 75-100 | 1200 | 3.0 | 5,000 |
| PIB-160 | 130-160 | 1500 | 3.0 | 8,000 |
A wet, oily or highly polished jacket reduces friction and therefore capacity – confirm the rating for those conditions before the first pull.
Pulling Grips – Specification
| Parameter | Specification |
|---|---|
| Khoom npe | Pulling grips / hlau mesh rub tuav / cable rub thom khwm / cable stocking |
| Kev tsim kho | Double-layer cross-woven tubular wire mesh; closed braided head, or split mesh laced closed |
| Mesh material | Galvanised steel wire as standard; AISI 304 los yog 316 stainless; aramid or polyester for the non-metallic version |
| Mesh hlau diam | 1.5 / 2.0 / 2.5 / 3.0 mm, selected by cable diameter and pull load |
| Cable diameter ntau | 9-160 mm nyob rau hauv tus qauv qauv; larger made to order |
| Mesh ntev | 300 / 450 / 600 / 700 / 900 / 1200 / 1500 mm; kev cai mus txog 3000 mm |
| Rub lub peev xwm | 750-8,000 kg working load across the standard range |
| Kev nyab xeeb yam | 5:1 nyob rau hauv lub rated breaking zog |
| Qhov muag / hom taub hau | Ib leeg, ob npaug, hloov tau, rotating, offset or thimble eye; braided eye or swaged ferrule |
| Txheej | Plain; PVC or rubber coated; colour coating for size coding |
| Ua haujlwm kub | -40 C rau +120 C; coated versions to about +70 C |
| Kos npe | Qauv, cable range and capacity on the label or the ferrule tag |
| Kev kho kom haum | Mesh length and diameter, wire gauge, hom qhov muag, logo cim, private-label packing |
| Keeb kwm | Lift Sling Rigging Co., Ltd – Taizhou, Jiangsu, Tuam Tshoj |
Eye and Head Options
The head decides how the pulling line meets the grip, and it is the part that has to pass a duct mouth, a sheave or a manhole cover.
- Single braided eye – ib loop, for a straight pull in a clean duct.
- Ob qhov muag – two loops for lashing, or for two lines pulled in line.
- Hloov qhov muag – a swaged ferrule eye that articulates, so the grip stays aligned through bends.
- Rotating qhov muag – lets the cable spin out its own lay on long runs without twisting the mesh.
- Offset qhov muag – keeps the line clear of the duct wall where headroom is tight.
- Thimble qhov muag – a hard wear surface inside the eye where it rubs a hook, shackle or winch line.
Galvanised, Stainless or Non-Metallic
Material is decided by the environment the grip works in, not by the pull load.
| Mesh material | Ib puag ncig | What it buys you |
|---|---|---|
| Galvanised steel wire | General site, duct, trench, indoor plant | Lowest cost per grip; the zinc layer wears at duct mouths and sheaves over repeated pulls |
| AISI 304 stainless | Wet tunnels, wash-down areas, general outdoor | No coating to wear off, no rust staining on white duct or painted pipe |
| AISI 316 stainless | Offshore, ntug hiav txwv, chemical and desalination plant | Molybdenum for chlorides; the version that survives salt and de-icing spray |
| PVC los yog roj hmab coated mesh | Painted, polished or stainless pipe | Prevents marking; working temperature to about +70 C |
| Aramid or polyester mesh | Live circuits, fragile insulation, fiber ntau | No metal anywhere near the conductor |
What the Capacity on the Label Means
Every grip is rated at a 5:1 yam kev nyab xeeb on its breaking strength, so a CPS-50 with a 2,500 kg capacity has been built to hold about 12,500 kg before it fails. Cov 2,500 kg figure is the working load: it is what you are permitted to pull, not what the grip can survive.
Two practical consequences. Ua ntej, do not use the breaking strength as a target – a grip taken to its break has already damaged the cable and the mesh. Thib ob, a pulling grip is a pulling and holding tool, not a lifting sling: unless the model is rated and marked for lifting, keep it on the horizontal pull, the duct and the cable drum.
Fitting and the First Pull
- Tshawb xyuas lub mesh, eye and ferrule before every use – tawg kab, a deformed eye or a slipped ferrule retire the grip.
- Expand the mesh fully and slide it on until the cable end reaches the eye. Half-engagement is the most common cause of a pull that lets go.
- Khaws lub rub nyob rau hauv txoj kab nrog mesh axis; side loading concentrates the grip on one edge of the weave.
- Take up the slack slowly and watch the mesh close. If it slips at low load, the grip is too large for the diameter or the jacket is too smooth – stop and re-size rather than pulling harder.
- Tsis txhob tshaj lub peev xwm ntsuas, and never stand in line with a loaded pull line.
Kev tshuaj xyuas thiab nyiaj laus
- Broken or lifted wires anywhere in the weave – the grip has lost section and capacity.
- A deformed, stretched or opened eye, or a ferrule that has slipped on the rope.
- Corrosion pitting on galvanised mesh, or a coating worn through to bare wire.
- Mesh that no longer closes on the cable, or that has been pulled out of shape.
- Any grip involved in a slip or an overload: retire nws, do not re-use it on a lighter job.
Record the pulls and the damage. A grip is cheap next to the cable it is pulling, and a mesh that has been dragged through a rough duct mouth is not the same grip it was on the first pull.
Where Pulling Grips Are Used
- Rub LV, MV thiab HV fais fab cable, tswj cable thiab fiber optic cable los ntawm ducts, trench thiab risers
- Rub cov kab txuas, hlau hlua thiab rods nrog winches, capstans thiab cable pullers
- Handling steel yeeb nkab, PVC and PE pipe, kav dej, hose and ducting
- Supporting or lowering smooth cylindrical loads where a clamp would crush or mark the surface
- Telecom, utility, lub qhov, substation, offshore and marine installation work
Braiding, Testing and Documentation
Lift Sling Rigging Co., Ltd muaj braided hlau hlua thiab mesh rigging hauv Taizhou, Jiangsu for close to thirty years. Every grip is braided from wire we select, lub qhov muag yog braided los yog swaged mus rau ib tug ntev tswj, thiab cov qauv yog pov thawj-loaded ua ntej xa. Cov ntaub ntawv soj ntsuam ua ntej khoom xa tuaj thiab kev kuaj thib peb tuaj yeem npaj tau raws li kev thov; our certification page lists the management systems behind the process.
OEM is routine: mesh ntev, mesh diameter, wire gauge, hom qhov muag, coated colour for size coding, logo marking and private-label packing. Send the cable diameter and the pull load and we will quote the model rather than a range.
Cov lus nug nquag
What are pulling grips used for?
Holding a cable, hlua, pipe or duct so it can be pulled, lowered or tensioned. The mesh closes on the jacket as the pull load rises, which spreads the gripping force along the cable instead of clamping it at one point.
Is a pulling grip the same as a cable sock?
Yog lawm. Pulling grip, cable sock, cable stocking, mesh grip and pulling stocking all describe the same article: a braided wire mesh tube with an eye at the head. The names come from different trades – cable jointers say sock, riggers say grip.
Kuv yuav xaiv qhov loj li cas?
Measure the true outside diameter where the mesh will sit, then check that the model’s range covers it and that you have at least four to five times the diameter in mesh engagement. A grip that is too large slips; one that is too small will not slide on.
How much can a pulling grip hold?
The standard range runs from 750 kg on the CPS-16 to 8,000 kg on the CPS-160, quoted as working loads at a 5:1 yam kev nyab xeeb. Peev xwm nyob ntawm cable nto, mesh length and the number of mesh layers, so confirm the figure for your cable before the first pull.
Will a wire mesh grip damage the cable jacket?
Not in normal use. The load is distributed over the mesh length rather than concentrated, which is why grips are used on lead sheath, thin-wall insulation and fibre. Rau pleev xim, polished or stainless pipe, specify a PVC or rubber coated mesh to avoid surface marking.
Can I fit one to a cable that is already installed?
Yog lawm – use a lace-up or split mesh grip, which is wrapped around the cable and laced closed instead of being slid over a free end. Saib cov lace-up hoisting grips nplooj.
Can a pulling grip be used for lifting?
Only if the model is rated and marked for lifting. A standard pulling grip is a pulling and holding tool; using an unrated grip as a lifting sling puts a factor of five between the load and a failure that no one has calculated.
Can you make a custom length, eye or branded grip?
Yog lawm. Mesh length from 300 mm rau 3000 mm, cable diameters outside the standard range, ib leeg, ob npaug, hloov tau, rotating, offset or thimble eyes, coated colours for size coding, logo marking and private-label packing.
Request a Pulling Grip Quotation
Send the cable or pipe diameter, the mesh length you can engage, the eye type and the expected line pull – plus the environment, if it is wet, salty or likely to mark the surface. We will come back with the model, the capacity and a factory-direct price.
Send your pulling grip specification
Yam khoom
- Cable rub thom khwm – kaw lub taub hau, ib qhov muag
- Ob lub qhov muag cable rub grips
- Offset qhov muag cable rub grips
- Lace-up hoisting tuav – for installed cable
- Non-metallic cable pulling grips – no metal near conductors
- Heavy-duty stainless hlau cable rub tuav
- All wire rope slings and pulling equipment