Turnbuckles
Tension Turnbuckle JIS Frame Type Hook / Eye
A drop-forged carbon steel tension turnbuckle with open frame design to adjust chain or wire rope tension in marine, construction, and lifting rigging applications. Available in JIS Frame Type with hook/hook, eye/hook, eye/eye, or stud/stud end configurations. Sizes range from 6mm to 50mm, electric galvanized for corrosion resistance, and supplied in cartons or gunny bags on pallets.
- Size
- 6mm-50mm
- Material
- Carbon Steel
- Type
- JIS Frame Process: Drop Forged Surface: Electric Galvanized
- Packing
- Cartons or Gunny Bags and then on Pallets
- Catalogue Family
- Turnbuckles
- 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 Tension Turnbuckle JIS Frame Type Hook Gives You
- Open frame design allows easy access to threads for adjustment in tight or confined spaces
- Drop-forged carbon steel body provides strength and impact resistance under dynamic loads
- Electric galvanization resists rust and corrosion in marine and outdoor environments
- Multiple end types (hook, eye, stud) allow flexible connection to chains, cables, or structural fittings
- Adjustable length enables precise tension control in rigging systems without replacing components
- Standard 4:1 design factor ensures safe working load limit is maintained under load
- Open frame reduces weight compared to enclosed body turnbuckles while maintaining strength
Application Scenarios
Where Tension Turnbuckle JIS Frame Type Hook Is Used
- Marine rigging on ships and offshore platforms where chain tension must be adjusted during mooring or anchoring
- Construction site cable systems for temporary structures, scaffolding, or crane support lines
- Lifting rigging setups using wire rope or chain where tension needs to be fine-tuned before lifting
- Stage and entertainment rigging for ziplines or suspended equipment requiring tension stability
- Tent and canopy installations where adjustable tension ensures structural stability in variable weather
- Utility line tensioning for overhead cables where periodic adjustment is needed for sag control
Who It Is For
Buyers This Product Is Built For
- Marine contractors specifying rigging hardware for shipboard or offshore mooring systems
- Construction firms managing temporary structural supports and cable tensioning
- Rigging suppliers sourcing adjustable tension components for lifting and load control
- Event and stage production teams installing temporary overhead rigging with precise tension
- Industrial maintenance teams adjusting chain or cable tension in machinery or conveyor systems
- Fleet operators maintaining trailer and transport rigging with adjustable tension components
Problems It Solves
Problems This Product Removes
- Adjusting chain or wire rope tension without disassembling the entire rigging system
- Requiring a compact, open-frame turnbuckle that allows visual inspection of threads and connection points
- Need for corrosion resistance in outdoor or marine environments without sacrificing strength
- Using a single component to replace multiple fittings when connecting different end types
- Avoiding the need to cut or replace chain or cable when tension needs to be altered
- Sourcing a turnbuckle with a standard design factor and traceable marking for safety compliance
Technical Features
Technical Features
- Drop-forged carbon steel body with open frame (JIS Frame Type) for accessibility and weight reduction
- Available in multiple end types: hook & hook, eye & hook, eye & eye, stud & stud
- Threaded ends with standard pitch for compatibility with chain links, wire rope fittings, or bolts
- Electric galvanized surface finish for enhanced corrosion resistance
- Standard 4:1 design factor with minimum breaking load four times the safe working load
- Working load limit and material grade stamped on the body for traceability
- Open frame construction allows visual inspection and adjustment in tight spaces
Specifications
Tension Turnbuckle JIS Frame Type Hook Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Material | Carbon steel |
|---|---|
| Type | JIS Frame Type Open Body |
| Process | Drop forged |
| Surface Finish | Electric galvanized |
| Size Range | 6mm to 50mm |
| End Types | Hook & Hook, Eye & Hook, Eye & Eye, Stud & Stud |
| Design Factor | 4:1 minimum breaking load to safe working load |
| Packing | Cartons or gunny bags on pallets |
Materials
Materials And Finishes
- Carbon steel body drop forged for strength and durability
- Electric galvanization applied to the surface for corrosion protection
- Threaded ends made from the same carbon steel, heat-treated for thread integrity
- No alloy steel or special grades specified beyond carbon steel
Manufacturing Process
How This Product Is Made
1Drop forging of the open frame body and threaded ends
2Heat treatment to improve strength and fatigue resistance
3Machining of threads and end fittings to JIS standard dimensions
4Electric galvanizing process for corrosion resistance
5Stamping of working load limit and material grade on the body
6Inspection of thread engagement and free rotation before packing
7Packing in cartons or gunny bags and palletizing for export
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 design factor
- Visual inspection of galvanization for uniformity and coating thickness
- Material Test Certificate to EN 10204 3.1 issued with the order on request
- Third-party inspection accepted at the Qingdao warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the body for traceability
- Private label and OEM marking available
- Surface finish options include electric galvanizing, zinc plating, powder coating, or electrophoretic black
- End configurations built to a supplied drawing
- Packing configuration adjusted for carton count, pallet pattern, 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 |
|---|---|
| Enclosed body turnbuckle | The open frame allows easier access for adjustment and inspection but offers less protection against debris and impact |
| Threaded rod with nuts | The turnbuckle provides a single compact unit with balanced tension adjustment, while separate rods and nuts require more components and alignment |
| Screw pin shackle | The turnbuckle adjusts tension continuously and holds position under load, whereas a screw pin shackle is fixed once tightened |
| Adjustable link chain | The turnbuckle offers finer tension control and is lighter, but chain links are more robust in high-abrasion environments |
Use Guide
How To Use And Inspect Tension Turnbuckle JIS Frame Type Hook
- Match the stamped working load limit to the calculated system load, not the equipment rating
- Ensure both ends are secured with the correct pins or bolts before applying tension
- Turn both ends equally to maintain alignment and avoid side loading
- Inspect the galvanized coating regularly for damage in corrosive environments
- Do not exceed the maximum working load limit under dynamic or shock loading
- Retire the turnbuckle if the body shows deformation, threads are stripped, or the marking is unreadable
Related Products
Often Ordered With This Item
HD Turnbuckle Jaw Jaw, Heavy Duty Turnbuckles
Stainless Steel Turnbuckle H/E, H/H, E/E
Aluminum Body Turnbuckle Hook and Eye Alu Closed Body
Aluminum Turnbuckles Eye and Eye Alu Closed Body
Aluminum Turnbuckle Hook and Hook Alu Closed Body
Wire Rope Turnbuckle Commercial Type Malleable Steel
Turnbuckles hook and hook Commercial Type Malleable Steel
Galvanized Turnbuckle Eye/Eye Commercial Type Malleable Steel
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Answers
Tension Turnbuckle JIS Frame Type Hook FAQ
What is the difference between JIS Frame and enclosed body turnbuckles?
JIS Frame Type has an open body design for easier access and inspection, while enclosed body turnbuckles are fully enclosed for protection but harder to adjust in tight spaces.
Can I use this turnbuckle on wire rope?
Yes, it is designed for use with wire rope, chain, or cables when fitted with compatible end fittings such as hooks, eyes, or studs.
What is the design factor for these turnbuckles?
A standard 4:1 design factor is applied, meaning the minimum breaking load is four times the safe working load.
Are Material Test Certificates available?
Yes, a Material Test Certificate to EN 10204 3.1 is supplied with the order on request.
Can I get custom end types or sizes?
Yes, custom end types and sizes can be built to a drawing. Contact us with your specifications for a quote.
How are they packed for export?
Standard packing is in cartons or gunny bags on pallets. We can adjust the carton count and pallet pattern to suit your warehouse or retail needs.
What surface finishes are available?
Standard finish is electric galvanized. Custom options include zinc plating, powder coating, and electrophoretic black.
Need A Quote On Tension Turnbuckle JIS Frame Type Hook
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