Shackles
Drop Forged Roller Shackle with Hexagon Bolt Pin and Nut, Sheave / Pulley D Shackle
A drop-forged alloy steel bow shackle with a free-rotating sheave on the pin, designed to redirect lines under full load with minimal friction. It combines the anchoring strength of a rigid shackle with the low-drag performance of a pulley, replacing the need for a separate snatch block. Available in sizes from 3T to 85T safe working load, with a hexagon bolt pin and nut, powder coated or zinc plated finish, and standard 4:1 design factor.
- Size
- 3T-85T
- Material
- Alloy Steel
- Finish
- Powder Coated / Zinc Plated / Custom
- Type
- Hexagon Bolt Pin with Nut
- Process
- Drop Forged Heat Treatment Quenched and Tempered Pin
- Catalogue Family
- Shackles
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What Roller Shackle Gives You
- The rotating central spool turns sliding friction into rolling motion, reducing line drag by up to 60 percent compared to rigid shackles
- Maintains full working load limit while protecting synthetic rope and wire cable from heat and localized wear
- Wide smooth roller radius spreads pressure evenly, preventing heat build-up on Dyneema and UHMWPE lines
- Replaces a rigid shackle and a separate snatch block in light to medium redirection tasks, reducing gear weight and bulk
- Hexagon bolt pin with lock nut and stainless cotter pin prevents loosening under continuous vibration and multi-directional pull
- Powder coated or zinc plated finish resists corrosion in saltwater, mud, and outdoor environments
- Drop-forged body in heat-treated alloy steel provides high impact resistance and long service life
Application Scenarios
Where Roller Shackle Is Used
- Off-road 4x4 winching where the line is redirected around a tree anchor or doubled back for a two-line pull
- Fishing trawler deck machinery and anchor line guides where rope moves continuously against structural fixings
- Forestry and timber skidding as a compact guide block pulling logs through rough terrain without snagging
- Temporary industrial rigging setups redirecting tension cables, guy wires, and hoist lines
- Recovery and towing kits on commercial fleets and utility trailers where gear weight and bulk matter
Who It Is For
Buyers This Product Is Built For
- Recovery and off-road gear brands building 4x4 winch and snatch kits for retail
- Fleet and towing operators specifying deck and bumper recovery hardware
- Marine and fishing outfitters equipping trawler decks and anchor handling gear
- Forestry contractors pulling timber with winch and cable systems
- Rigging distributors carrying a shackle range who need a friction-reducing option in the same catalogue
Problems It Solves
Problems This Product Removes
- Synthetic winch rope sheath fraying and thermal damage where a line slides over a fixed shackle bow
- Wire rope service life cut short by heat and localized wear at the redirection point
- Snatch blocks adding weight and bulk to a recovery kit that has to be carried on the vehicle
- Pins backing off under vibration on trailers and deck machinery during long hauls
- Sharp bending radius and pinch points at the anchor point damaging expensive rope
- Buying anchoring hardware and line redirection hardware as two separate line items from two suppliers
Technical Features
Technical Features
- Free-rotating central spool sheave mounted on a heavy-duty safety pin
- Drop-forged body in heat-treated carbon steel or alloy steel quenched and tempered
- Hexagon bolt pin with lock nut and stainless steel cotter split pin
- Smooth contoured roller sleeve sized for synthetic rope Dyneema line and steel wire cable
- Standard 4:1 design factor with minimum breaking load at four times the safe working load
- Powder coated zinc plated or electrophoretic finish to order
- Working load limit stamped on the body for traceability in the field
Specifications
Roller Shackle Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 3T to 85T safe working load |
|---|---|
| Material | Drop forged alloy steel quenched and tempered |
| Pin Type | Hexagon bolt pin with nut and stainless cotter pin |
| Surface Finish | Powder coated zinc plated or custom |
| 3T Dimensions | d 25 D 63 H 105 B 47 L 123 mm weight 2.3 kg |
| 4T Dimensions | d 28 D 74 H 122 B 54 L 141 mm weight 3.8 kg |
| 5T Dimensions | d 32 D 80 H 144 B 64 L 160 mm weight 4.85 kg |
| 25T Dimensions | d 45 D 136 H 180 B 70 L 230 mm weight 16.85 kg |
| 35T Dimensions | d 51 D 160 H 200 B 80 L 260 mm weight 24.5 kg |
| 85T Dimensions | d 62 D 230 H 250 B 95 L 320 mm weight 85T |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- Alloy steel body drop forged then quenched and tempered for impact resistance
- Heat-treated carbon steel option where the duty allows it
- Stainless steel cotter pin so the locking element does not seize in salt service
- Powder coat or e-coat layer over the forged body for corrosion resistance
Manufacturing Process
How This Product Is Made
1Drop forging of the bow and pin blanks
2Quench and temper heat treatment
3Machining of the pin thread and sheave bore
4Sheave assembly and free-rotation check
5Surface finishing by zinc plating powder coating or e-coating
6Working load limit stamping and marking
7Proof load testing and packing
Quality Control
Quality Control On Every Batch
- Proof load test on the production batch before release
- Dimensional tolerance check against the published size table
- Breaking strength validation to confirm the 4:1 design factor
- Free rotation and end float check on the assembled sheave
- Material Test Certificate to EN 10204 3.1 issued with the order
- Third-party inspection accepted at our warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the bow
- Private label and OEM marking for gear brands
- Finish to order in zinc plating powder coating or electrophoretic black
- Sizes and pin configurations built to a supplied drawing
- Carton and pallet packing configured for your warehouse or retail pack
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Rigid bow shackle | The roller version protects the rope and cuts drag but costs more and adds a moving part that has to be inspected |
| Snatch block | Lighter and far more compact for light to medium redirection but a snatch block still wins on sheave diameter and efficiency for heavy repeated pulls |
| Screw pin anchor shackle | The bolt pin with nut and cotter will not back out under vibration whereas a screw pin needs checking on dynamic work |
| Soft shackle | Steel handles abrasion over rock and steelwork while a soft shackle is lighter and floats but chafes through faster |
Use Guide
How To Use And Inspect Roller Shackle
- Match the stamped working load limit to the calculated line load not to the winch rating
- Feed the rope so it runs on the roller crown and never on the bow itself
- Torque the hex nut and fit the stainless cotter pin before every dynamic pull
- Check the sheave spins freely by hand and shows no grit binding before rigging
- Keep the pull in line with the bow and avoid side loading the shackle
- Retire the shackle if the bow shows deformation the roller seizes or the marking is no longer legible
Related Products
Often Ordered With This Item
Crosby Wide Body Shackles
G2160 Shackle Crosby Wide Body Shackles
Wide Body Shackle Crosby G-2160
Lugless Joining Shackle - Kenter Link - End Shackle -Swivel Set
Kenter Link - Joining / End Shackle -Swivel Set
Kenter Shackle - Anchor Chain Fittings
Screw Pin Chain Shackle D Type
Stainless Steel Shackles Bow Type
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Answers
Roller Shackle FAQ
Can a roller shackle replace a traditional snatch block?
For light to medium line redirection and winch recovery it can, and it cuts the weight and bulk of the kit. For heavy repeated pulls a snatch block still gives a larger sheave diameter and better efficiency.
Is it safe on synthetic winch rope?
Yes. The wide smooth radius of the rotating sleeve spreads load pressure evenly, which prevents heat build-up and surface abrasion on Dyneema and UHMWPE rope.
What safety factor do these shackles carry?
A standard 4:1 design factor, so the minimum breaking load is four times the stated safe working load.
What certificates come with the order?
A Material Test Certificate to EN 10204 3.1 is supplied on request. Every batch is proof load tested with dimensional and breaking strength checks recorded.
Can you stamp our own tonnage marking and brand?
Yes. Custom tonnage stamping, private label marking and OEM packing are standard options, and the finish can be zinc plated, powder coated or electrophoretic black.
How are they packed for export?
Cartons on pallets as standard, and we will configure the carton count and pallet pattern to suit your warehouse or retail pack. Goods can be held in our Qingdao warehouse free for two months while you consolidate a container.
Which sizes are available?
The range runs from 3T to 85T safe working load. The size table on this page gives the d, D, H, B and L dimensions and the unit weight for each capacity.
Need A Quote On Roller Shackle
Send the sizes, the finish and the quantity on WhatsApp or by email. You get a priced reply within 24 hours and a straight answer on stock.
We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.