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Pulling Grips
Pulling grips are flexible steel wire mesh sleeves that hold a cable, ロープ, pipe or duct so it can be pulled, lowered or tensioned. Slide the mesh over the end, tension the eye, 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 wire, for cable from 9 mmから 160 mm, with single, ダブル, フレキシブル, 回転またはオフセットした目.
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:
- スライドオン. メッシュを拡張し、ケーブルが目に届くまでケーブルの端に押し込みます。. 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.
- リリース. Slacken the line and push the mesh forward; the weave opens and the grip slides off. No tools, no marks, 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. あ 3.0 mm wire in a 300 mm mesh holds less than a 2.0 mm wire in a 1200 mmメッシュ. 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.
| 工事 | How it closes | こんなときに使います | ページ |
|---|---|---|---|
| Cable pulling sock – 閉じた頭, 片目 | Braided closed head, eye at the head | Straight pulls into a clean duct or conduit, cable end free | ケーブル引っ張りソックス |
| 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 grip | 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, 金属なし | 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 または 316 ステンレス.
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 | モデル |
|---|---|---|---|
| 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 | CPS-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.
| モデル | Cable OD (mm) | メッシュの長さ (mm) | Mesh wire (mm) | 牽引能力 (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 |
| CPS-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 – 仕様
| パラメータ | 仕様 |
|---|---|
| 製品名 | Pulling grips / wire mesh pulling grip / cable pulling sock / cable stocking |
| 工事 | Double-layer cross-woven tubular wire mesh; closed braided head, or split mesh laced closed |
| メッシュ素材 | Galvanised steel wire as standard; AISI 304 または 316 ステンレス; aramid or polyester for the non-metallic version |
| メッシュ線径 | 1.5 / 2.0 / 2.5 / 3.0 mm, selected by cable diameter and pull load |
| ケーブル径範囲 | 9-160 mm（標準モデル）; larger made to order |
| メッシュの長さ | 300 / 450 / 600 / 700 / 900 / 1200 / 1500 mm; までカスタム 3000 mm |
| 牽引能力 | 750-8,000 kg working load across the standard range |
| 安全係数 | 5:1 定格破断強度について |
| 目 / head type | シングル, ダブル, フレキシブル, rotating, offset or thimble eye; braided eye or swaged ferrule |
| コーティング | Plain; PVC or rubber coated; colour coating for size coding |
| 使用温度 | -40 Cから +120 C; coated versions to about +70 C |
| マーキング | モデル, cable range and capacity on the label or the ferrule tag |
| カスタマイズ | Mesh length and diameter, wire gauge, 目のタイプ, ロゴマーキング, private-label packing |
| 起源 | リフトスリングリギングカンパニー, 株式会社 – 台州, 江蘇省, 中国 |
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 – ワンループ, for a straight pull in a clean duct.
- 二重の目 – two loops for lashing, or for two lines pulled in line.
- 柔軟な目 – a swaged ferrule eye that articulates, so the grip stays aligned through bends.
- 回転する目 – lets the cable spin out its own lay on long runs without twisting the mesh.
- オフセットアイ – keeps the line clear of the duct wall where headroom is tight.
- シンブルアイ – 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.
| メッシュ素材 | 環境 | What it buys you |
|---|---|---|
| Galvanised steel wire | General site, ダクト, trench, indoor plant | Lowest cost per grip; the zinc layer wears at duct mouths and sheaves over repeated pulls |
| AISI 304 ステンレス | Wet tunnels, 洗い場エリア, general outdoor | No coating to wear off, no rust staining on white duct or painted pipe |
| AISI 316 ステンレス | オフショア, 沿岸, chemical and desalination plant | Molybdenum for chlorides; the version that survives salt and de-icing spray |
| PVC またはゴムでコーティングされたメッシュ | 塗装済み, polished or stainless pipe | Prevents marking; working temperature to about +70 C |
| Aramid or polyester mesh | Live circuits, fragile insulation, ファイバ | No metal anywhere near the conductor |
What the Capacity on the Label Means
Every grip is rated at a 5:1 安全率 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. の 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. 初め, do not use the breaking strength as a target – a grip taken to its break has already damaged the cable and the mesh. 2番, 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
- メッシュを検査する, eye and ferrule before every use – 壊れたワイヤー, 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.
- プルをメッシュ軸と一直線に保つ; 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.
- 定格容量を超えないでください, and never stand in line with a loaded pull line.
検査と廃止
- 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: それを引退させる, 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
- LVを引く, MVおよびHV電源ケーブル, ダクトを通る制御ケーブルと光ファイバーケーブル, 溝とライザー
- ケーブル束を引っ張る, ワイヤーロープとウインチ付きロッド, キャプスタンとケーブルプーラー
- 鋼管の取り扱い, PVC and PE pipe, 導管, hose and ducting
- Supporting or lowering smooth cylindrical loads where a clamp would crush or mark the surface
- Telecom, utility, トンネル, substation, offshore and marine installation work
Braiding, テストと文書化
リフトスリングリギングカンパニー, Ltdは台州で編組ワイヤーロープとメッシュリギングを行っています, Jiangsu for close to thirty years. Every grip is braided from wire we select, 目を制御された長さに編むかかしめる, サンプルは発送前に校正ロードされます. ご要望に応じて、出荷前検査レポートや第三者によるテストも手配可能です; 私たちの 認定ページ プロセスの背後にある管理システムをリストします。.
OEM is routine: メッシュの長さ, mesh diameter, wire gauge, 目のタイプ, 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.
よくある質問
What are pulling grips used for?
Holding a cable, ロープ, 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?
はい. 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.
サイズはどうやって選べばいいですか?
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 安全率. 容量はケーブル表面に依存します, 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. 塗装用, 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?
はい – 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. を参照してください。 lace-up hoisting grips ページ.
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?
はい. Mesh length from 300 mmから 3000 mm, cable diameters outside the standard range, シングル, ダブル, フレキシブル, 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
関連製品
- ケーブル引っ張りソックス – 閉じた頭, 片目
- ダブルアイケーブル牽引グリップ
- オフセットアイケーブル牽引グリップ
- レースアップ巻き上げグリップ – for installed cable
- Non-metallic cable pulling grips – no metal near conductors
- 耐久性の高いステンレススチール製ケーブル牽引グリップ
- All wire rope slings and pulling equipment