Marine Chains
Lugless Joining Shackle - Kenter Link - End Shackle -Swivel Set
A lugless joining shackle, also known as a Kenter link or end shackle, designed for marine applications to connect anchor chains without reducing strength. It features a welded construction with a swivel joint, allowing rotation under load. Available in sizes from 12.5mm to 162mm, with grades U2 or U3, and finishes including hot dip galvanized, galvanized, color painted, or oil. Certified to ABS, LR, BV, DNV, GL, RINA, KR, NK, RS, and CCS standards.
- Size
- From 12.5mm to 162mm
- Grade
- U2 or U3
- Catalogue Family
- Marine Chains
- 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 Lugless Joining Shackle Gives You
- Lugless design maintains full chain strength at the connection point without stress concentration
- Swivel joint allows rotation under load, reducing torsion and chain wear during anchoring
- Welded construction provides a compact and durable link between chain lengths
- Available in multiple grades U2 and U3 to match chain strength requirements
- Multiple surface finishes including hot dip galvanized and color painted for corrosion resistance
- Certified to major marine classification societies for use in offshore and ship mooring systems
- Reduces the need for separate swivel fittings and anchor shackles in chain systems
Application Scenarios
Where Lugless Joining Shackle Is Used
- Connecting anchor chain sections on ships and offshore platforms where continuous rotation is required
- Marine mooring systems where chain must pivot under dynamic loads without binding
- Offshore rig and platform mooring where chain joints must withstand high tension and rotation
- Heavy-duty marine towing and anchoring operations in saltwater environments
- Rebuilding or repairing existing anchor chains with a reliable, certified joining solution
- Integrating into chain systems that require a single, continuous link without weak points
Who It Is For
Buyers This Product Is Built For
- Marine equipment suppliers building complete anchor chain systems
- Shipyards and repair yards replacing or upgrading anchor chain connections
- Offshore platform operators maintaining mooring chain integrity
- Marine contractors specifying certified chain joining hardware for offshore projects
- Anchor chain manufacturers sourcing certified joining components for their product lines
- Marine surveyors and classification society inspectors verifying chain system compliance
Problems It Solves
Problems This Product Removes
- Chain joints losing strength due to stress concentration at lug or pin locations
- Chain binding or seizing at connection points under dynamic load and rotation
- Need for multiple fittings (shackle + swivel) to achieve a rotating joint
- Lack of certification for joining hardware in marine applications
- Inconsistent finishes leading to premature corrosion in saltwater service
- Difficulty sourcing a single certified component that matches chain grade and size
Technical Features
Technical Features
- Lugless welded construction with a swivel joint for full rotation under load
- Available in chain sizes from 12.5mm to 162mm with matching U2 or U3 grade
- Swivel joint allows continuous rotation to reduce torsion and chain wear
- Surface finishes: hot dip galvanized, galvanized, color painted, or oil
- Certified to ABS, LR, BV, DNV, GL, RINA, KR, NK, RS, and CCS standards
- Grade U2 or U3 selected to match the chain strength and application requirements
- Stamped with working load limit and grade marking for traceability
Specifications
Lugless Joining Shackle Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Grade | U2 or U3 |
|---|---|
| Size Range | 12.5mm to 162mm |
| Surface Finish | Hot dip galvanized, galvanized, color painted, or oil |
| Certifications | ABS, LR, BV, DNV, GL, RINA, KR, NK, RS, CCS |
| Swivel Type | Swivel joint with rotating pin |
| Construction | Welded lugless design |
| Application | Marine anchor chain joining |
| Color Options | Silver, Black, Steel color |
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
- Carbon steel body with heat treatment for strength and durability
- Welded joints using high-strength filler material to match base metal
- Hot dip galvanized coating for corrosion resistance in marine environments
- Color paint or oil finish applied after welding for additional protection
- Swivel pin and bearing components made from hardened steel for long service life
Manufacturing Process
How This Product Is Made
1Material cutting and shaping to size for the shackle body and swivel components
2Welding of the lugless body with precision to maintain structural integrity
3Swivel joint assembly with hardened pin and bearing for free rotation
4Surface treatment including hot dip galvanizing or painting
5Final inspection for weld quality, finish, and swivel function
6Stamping of grade, working load limit, and traceability marks
7Packaging for export with corrosion protection and secure containment
Quality Control
Quality Control On Every Batch
- Weld integrity checked via visual and dimensional inspection
- Swivel joint tested for free rotation and end float under load
- Material test certificates to EN 10204 3.1 supplied with orders
- Proof load testing on production batches before release
- Dimensional tolerance verification against published size table
- Breaking strength validation to confirm grade and design factor
- Third-party inspection accepted at warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the shackle body
- Private label and OEM marking available
- Finish options: hot dip galvanized, galvanized, color painted, or oil
- Custom sizes and configurations built to a supplied drawing
- Packing cartons and pallets configured to match customer warehouse or shipping needs
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 |
|---|---|
| Lugged shackle | Lugless design maintains full chain strength without stress concentration, while lugged shackles have weaker points at the lug base |
| Separate swivel and shackle | The Kenter link combines both functions in one unit, reducing weight and complexity in the chain system |
| Screw pin shackle | Welded lugless construction is more robust for continuous marine service than a screw pin that can loosen under vibration |
| Standard chain link | The swivel joint allows rotation, which standard chain links cannot do, reducing chain torsion and wear |
Use Guide
How To Use And Inspect Lugless Joining Shackle
- Match the shackle grade U2 or U3 to the chain grade to ensure full strength compatibility
- Ensure the swivel joint rotates freely before installation and after each use
- Inspect the welds and finish regularly for signs of corrosion or damage in saltwater service
- Do not exceed the stamped working load limit under any condition
- Use only certified finishes for marine applications to prevent premature failure
- Retire the shackle if the swivel seizes, the weld shows cracking, or the marking is illegible
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Answers
Lugless Joining Shackle FAQ
What is a lugless joining shackle used for?
It is used to connect two lengths of anchor chain in marine applications, allowing rotation under load without reducing strength.
Can it be used in offshore platforms?
Yes, it is certified to major marine classification societies and suitable for offshore mooring and anchoring systems.
What grades are available?
Available in U2 and U3 grades, selected to match the chain strength and application requirements.
What surface finishes are offered?
Hot dip galvanized, galvanized, color painted, or oil finish are available for corrosion resistance.
Are certificates provided?
Yes, Material Test Certificates to EN 10204 3.1 are supplied with orders, and the shackle is certified to ABS, LR, BV, DNV, GL, RINA, KR, NK, RS, and CCS.
Can it be customized?
Yes, custom tonnage stamping, private label marking, and finish options are available, and sizes can be built to a drawing.
How is it packed for export?
Packed in cartons on pallets, with options to configure packaging to match your warehouse or shipping needs. Free two-month storage in Qingdao warehouse is available.
Need A Quote On Lugless Joining Shackle
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