Snatch Blocks
Pulley Block Single With Hook K Type
A single sheave pulley block with a K-type frame, featuring a hook and eye attachment for flexible rigging setups. Designed for use with wire rope from 8mm to 28mm, it supports safe working loads from 0.5T to 6T across sizes 3" to 12". The block includes a latch for easy rope installation and free-rotating sheave bearings to reduce friction during lifting operations.
- Size
- 3" 0.5T, 4" 1T, 5" 1.5T, 6" 2T. 7" 3T 8" 4T 10" 5T 12" 6T
- Catalogue Family
- Snatch Blocks
- 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 Pulley Block Single with Hook K Type Gives You
- Single sheave design provides a 2:1 mechanical advantage for manual or winch-assisted lifting
- Latch mechanism allows quick opening and closing of the frame for rope threading without tools
- Free-rotating sheave bearings reduce friction and improve rope life under load
- Hook and eye attachment variants enable secure mounting on cranes, hoists, or winches
- Compact size and lightweight construction allow easy handling and transport on site
- Lubricated axle bearings maintain low resistance and extend service life during repeated use
- Clear working load limit stamped on the frame for traceability and safe operation
Application Scenarios
Where Pulley Block Single with Hook K Type Is Used
- Manual lifting operations on construction sites where a single worker needs to manage loads beyond their strength
- Winch-assisted recovery or positioning of heavy equipment using a 2:1 mechanical advantage
- Mounting on chain hoists as a fixed anchor point to redirect lifting force
- Changing the direction of pull in angled lifts where the crane cannot be repositioned
- Temporary rigging setups in industrial maintenance where quick setup and portability are required
- Marine and offshore applications for redirecting wire rope on deck or during mooring operations
- Use with electric hoists to extend reach or adjust lifting angles without repositioning the hoist
Who It Is For
Buyers This Product Is Built For
- Construction site supervisors specifying lifting hardware for crane and manual lift operations
- Industrial maintenance teams needing portable pulley blocks for equipment servicing
- Marine and offshore contractors setting up temporary lifting points on deck or offshore platforms
- Rigging distributors stocking a versatile pulley block for general use across multiple industries
- Fleet and logistics operators using winch systems for trailer or cargo recovery
- Manufacturers of lifting kits requiring a compact, reliable pulley block with a hook and eye
Problems It Solves
Problems This Product Removes
- Need for a lightweight, portable lifting component that provides mechanical advantage without complex setup
- Difficulty in threading wire rope through a fixed pulley without a latch or openable frame
- High friction and rope wear due to non-rotating or poorly lubricated sheave bearings
- Lack of flexibility in mounting options when only a hook or eye is available
- Inability to redirect force direction without repositioning the crane or hoist
- Buying separate hook and eye pulley blocks from different suppliers for the same job
- Risk of overloading or using damaged hardware due to missing or unclear working load markings
Technical Features
Technical Features
- Single sheave with free-rotating bearing for low-friction rope movement
- K-type frame with integrated hook and eye for dual attachment options
- Latching mechanism to open and close the frame for rope installation
- Stainless steel or hardened steel sheave with precision bore and bearing fit
- Working load limit stamped on the frame for traceability and safety
- Lubricated axle bearings to reduce friction and extend service life
- Designed for wire rope diameters from 8mm to 28mm depending on size
Specifications
Pulley Block Single with Hook K Type Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 0.5T to 6T safe working load |
|---|---|
| Size Range | 3” to 12” frame length |
| Rope Diameter | 8mm to 28mm |
| Sheave Type | Single sheave |
| Attachment Type | Hook and eye |
| Frame Material | Drop forged carbon steel |
| Sheave Material | Hardened steel |
| Bearing Type | Lubricated roller bearing |
| Design Factor | 4:1 minimum breaking load to safe working load |
| Surface Finish | Zinc plated or custom |
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
- Drop forged carbon steel frame for strength and impact resistance
- Hardened steel sheave for wear resistance and long service life
- Lubricated roller bearing in the sheave axle to reduce friction
- Zinc plated finish for corrosion resistance in outdoor and marine environments
- Stainless steel latch pin and fasteners where applicable
Manufacturing Process
How This Product Is Made
1Drop forging of the K-type frame and sheave blanks
2Heat treatment of the frame and sheave for improved strength
3Machining of the sheave bore, frame eye, and hook attachment
4Assembly of the sheave with lubricated bearing and latch mechanism
5Zinc plating or custom surface finish application
6Stamping of working load limit and traceability markings
7Proof load testing and final inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load test on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 design factor
- Free rotation and bearing smoothness check on assembled sheave
- Visual inspection for cracks, deformation, or surface defects
- Material Test Certificate to EN 10204 3.1 issued with order on request
- Third-party inspection accepted at warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the frame
- Private label and OEM marking available
- Surface finish options: zinc plated, powder coated, or electrophoretic black
- Custom size and configuration built to a supplied drawing
- Packing carton and pallet configuration tailored to warehouse or retail 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 |
|---|---|
| Fixed pulley without latch | The K-type latch allows easier rope installation and removal, but a fixed pulley may have a simpler design and fewer moving parts |
| Double or triple sheave block | Single sheave provides lower mechanical advantage but is lighter and more compact for simple lifting or redirection tasks |
| Snatch block with screw pin | The K-type latch is faster to open and close than a screw pin, but a screw pin may offer more secure locking under dynamic loads |
| Non-rotating sheave | Free-rotating sheave reduces rope wear and friction, but a non-rotating sheave may be simpler and cheaper for low-duty applications |
Use Guide
How To Use And Inspect Pulley Block Single with Hook K Type
- Verify the stamped safe working load matches the calculated load before use
- Inspect the hook, frame, sheave, and latch for cracks, deformation, or wear before every lift
- Ensure the sheave rotates freely and the bearing is properly lubricated
- Do not overload the block beyond the stamped working load limit
- Avoid direct contact with moving wire rope during lifting operations
- Keep the rope aligned with the sheave center to prevent side loading
- Retire the block if the frame shows bending, the sheave seizes, or the marking is illegible
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Mounting Block With Eye, Single With A Hinged Lid
Snatch Block with Shackle HDG/ RED Lifting Marine Pulleys
Heavy Duty Snatch Block With Shackle HDG/ RED Lifting Marine Pulleys
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Answers
Pulley Block Single with Hook K Type FAQ
What is the mechanical advantage of this pulley block?
A single sheave pulley block provides a 2:1 mechanical advantage, meaning the force required to lift the load is halved.
Can I use this block with synthetic rope?
It is designed for wire rope. Using synthetic rope may cause excessive wear on the sheave and reduce service life due to different friction characteristics.
What is the design factor for these pulley blocks?
A standard 4:1 design factor is used, so the minimum breaking load is four times the stated safe working load.
Are Material Test Certificates available?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied on request with every order.
Can I get custom tonnage marking or branding?
Yes. Custom tonnage stamping, private label marking, and OEM packaging are standard options.
How are the pulley blocks packed for export?
Standard carton packing on pallets. We can configure carton count and pallet pattern to match your warehouse or retail requirements. Free two-month storage in Qingdao is available for shipment consolidation.
What sizes and capacities are available?
Available from 3” (0.5T) to 12” (6T). The full size table includes dimensions and weight for each capacity.
Need A Quote On Pulley Block Single with Hook K Type
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.