Snatch Blocks
Triple Pulley Block Snatch K-Type With Hook
A triple pulley block with K-type frame, hook and eye attachment, designed for high-efficiency lifting and force redirection. It features three free-rotating sheaves, a latch mechanism for easy rope installation, and a robust frame to handle dynamic loads. Available in sizes 4'' to 10'' with capacities from 1T to 5T, it supports wire rope diameters from 10mm to 22mm. The unit is suitable for crane, winch, and hoist applications where mechanical advantage and directional control are required.
- Size
- 4''
- Capacity
- 1T For wire rope dia(mm) 10mm Weight: 3.5KG
- 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 Triple Pulley Block Snatch K-Type with Hook Gives You
- Three free-rotating sheaves provide mechanical advantage and reduce rope friction during lifting
- Latch mechanism allows quick opening and closing of the frame for rope threading without disassembly
- Hook and eye attachment variants enable flexible mounting on cranes, hoists, or fixed supports
- Free-rotating sheaves minimize wear on wire rope and extend service life under repeated use
- Compact design with high load capacity reduces the need for multiple rigging components
- Standard 4:1 design factor ensures safe working load limits are maintained under dynamic conditions
- Robust K-type frame resists deformation under side load and shock loading
Application Scenarios
Where Triple Pulley Block Snatch K-Type with Hook Is Used
- Lifting heavy loads on construction sites using a crane with limited hoist capacity by adding mechanical advantage
- Redirecting wire rope on a winch system to change pull direction without repositioning the winch
- Using as a stationary anchor point in a chain hoist setup where the block is fixed to a beam or structure
- Mounting on a trailer or truck for off-road recovery where directional force change is needed
- Integrating into a temporary rigging setup for industrial maintenance or equipment installation
- Supporting multi-directional pulls in offshore or marine operations where space is limited
Who It Is For
Buyers This Product Is Built For
- Construction and infrastructure contractors specifying lifting hardware for crane operations
- Industrial maintenance teams requiring reliable pulley blocks for hoist and rigging setups
- Marine and offshore service providers using snatch blocks for mooring and load handling
- Truck and trailer operators building recovery kits with directional force control
- Rigging distributors sourcing a full range of pulley blocks with consistent quality and traceability
- Manufacturers of lifting equipment integrating pulley blocks into their own product lines
Problems It Solves
Problems This Product Removes
- Limited mechanical advantage in crane or winch systems due to single sheave setups
- Difficulty installing wire rope into a closed-frame block without removing bolts or pins
- Rope damage from friction and heat caused by non-rotating sheaves under load
- Inflexible mounting options that restrict setup in tight or angled workspaces
- Need to purchase separate hook and eye variants from different suppliers
- Lack of traceability and certification for pulley blocks used in safety-critical applications
Technical Features
Technical Features
- Triple free-rotating sheaves with precision-machined bores for smooth operation
- K-type frame with reinforced structure to resist deformation under side load
- Latch mechanism on the frame for quick rope entry and exit without disassembly
- Hook and eye attachment options for flexible mounting on cranes, hoists, or fixed points
- Standard 4:1 design factor with minimum breaking load four times the safe working load
- Working load limit and traceability marking stamped on the frame
- Sheave guards on both sides to protect the rope and prevent derailment
Specifications
Triple Pulley Block Snatch K-Type with Hook Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 1T to 5T |
|---|---|
| Size Range | 4'' to 10'' |
| Design Factor | 4:1 minimum breaking load to safe working load |
| Frame Type | K-type with hook and eye variants |
| Sheave Rotation | Free-rotating with precision bearings |
| Latch Mechanism | Yes, for frame opening and closing |
| Surface Finish | Zinc plated or powder coated on request |
| Weight - 4'' | 3.5 kg |
| Weight - 5'' | 4.5 kg |
| Weight - 6'' | 6 kg |
Materials
Materials And Finishes
- Drop forged alloy steel frame for high strength and impact resistance
- Heat-treated sheave shafts and bearings for long service life under dynamic load
- Zinc plated or powder coated finish to resist corrosion in outdoor and marine environments
- Stainless steel latch pin and fasteners where applicable to prevent seizing
Manufacturing Process
How This Product Is Made
1Drop forging of the K-type frame and sheave components
2Heat treatment of the frame and sheave shafts for improved hardness and fatigue resistance
3Precision machining of sheave bores, frame eyes, and latch mechanism
4Assembly of free-rotating sheaves with lubricated bearings
5Application of zinc plating or powder coating as per order specification
6Stamping of working load limit and traceability markings on the frame
7Proof load testing and final inspection before packing
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
- Free rotation and end float check on all sheaves
- 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 frame
- Private label and OEM marking for brand integration
- Surface finish in zinc plating, powder coating, or electrophoretic black
- Custom size and sheave configuration built to a supplied drawing
- Carton and pallet packing configured for warehouse or retail handling
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 |
|---|---|
| Single Sheave Snatch Block | The triple version provides higher mechanical advantage and reduces effort per pull, but is heavier and bulkier |
| Fixed Pulley Block | The snatch block allows rope entry and exit without removing the block, but has a lower load capacity than a fixed block of the same size |
| Double Sheave Block | The triple block offers more mechanical advantage but requires more rope length and space for setup |
| Non-Latching Block | The latch enables faster rope installation and removal, but requires inspection for latch integrity under load |
Use Guide
How To Use And Inspect Triple Pulley Block Snatch K-Type with Hook
- Match the stamped working load limit to the calculated rope tension, not the crane or winch rating
- Ensure the latch is fully closed and secured before applying load
- Inspect the sheaves for free rotation and absence of binding before each use
- Keep the rope aligned with the sheave center to avoid side loading and wear
- Use the correct wire rope diameter for the sheave size to prevent premature failure
- Retire the block if the frame shows deformation, the latch is damaged, or the marking is unreadable
Related Products
Often Ordered With This Item
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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
Snatch Block With Hook Single Oval Eye Marine Pulleys
Single Sheave Pulley Block With Swivel Oval Eye
Pulley Block Double With Oval Eye B Type
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Answers
Triple Pulley Block Snatch K-Type with Hook FAQ
What is the mechanical advantage of a triple pulley block?
It provides a 3:1 mechanical advantage, meaning the force required to lift a load is reduced to one-third of the load weight.
Can the latch be opened and closed under load?
No. The latch must be fully closed and secured before any load is applied. Opening under load can cause the rope to slip or the block to fail.
What wire rope diameter fits the 4'' size?
The 4'' size supports wire rope with a diameter of 10mm. The 5'' size fits 13mm, and the 6'' size fits 16mm.
Are Material Test Certificates available?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied with each order on request.
Can I get this block with a different finish?
Yes. Custom surface finishes are available in zinc plating, powder coating, or electrophoretic black as per your specification.
What is the weight of the 6'' block?
The 6'' block weighs 6 kg, with a capacity of 2T and a wire rope diameter of 16mm.
How are the blocks packed for export?
Standard cartons on pallets. We can configure the carton count and pallet pattern to match your warehouse or retail pack requirements. Free two-month storage in Qingdao is available for shipment consolidation.
Need A Quote On Triple Pulley Block Snatch K-Type with Hook
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