Snatch Blocks
Snatch Pulley Block Triple With Hook B Type
A triple sheave snatch pulley block with B-type attachment featuring a hook and eye for flexible rigging setup. Designed for use with wire rope from 10mm to 16mm, it offers a 1T to 2T capacity range across 4'', 5'', and 6'' sizes. The block includes a latch mechanism for easy rope installation and free-rotating sheaves to reduce friction during lifting operations.
- 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 Snatch Pulley Block Triple with Hook B Type Gives You
- Three sheaves in a single block increase mechanical advantage, reducing the effort needed to lift heavy loads
- Latch mechanism allows quick opening and closing of the frame for fast rope installation and removal
- Free-rotating sheaves minimize friction and wear on wire rope during repeated lifting cycles
- B-type configuration with both hook and eye attachment enables flexible mounting on cranes, winches, or fixed supports
- Compact design fits into tight rigging spaces while delivering high load capacity and directional control
- Reduces manual effort required to lift loads by distributing tension across multiple sheaves
- Suitable for both dynamic lifting and directional redirection in industrial and field applications
Application Scenarios
Where Snatch Pulley Block Triple with Hook B Type Is Used
- Lifting operations on construction sites where space is limited and multiple sheaves are needed for mechanical advantage
- Winch-assisted recovery or load movement on off-road vehicles using a directional change in rope pull
- Marine dockside operations where a fixed pulley block redirects wire rope from a winch to a mooring point
- Industrial maintenance setups requiring a temporary lifting point with adjustable attachment options
- Steel fabrication yards using pulley blocks to reposition heavy sections with minimal manpower
Who It Is For
Buyers This Product Is Built For
- Construction contractors needing compact, high-mechanical advantage lifting hardware
- Marine and offshore rigging teams requiring directional control and load reduction
- Industrial maintenance crews using pulley blocks for equipment handling and positioning
- Rigging distributors stocking versatile snatch blocks with multiple attachment options
- Manufacturers of winch kits and recovery systems integrating pulley blocks into their toolsets
Problems It Solves
Problems This Product Removes
- High manual effort required to lift heavy loads without mechanical advantage
- Difficulty installing wire rope into a fixed pulley block due to lack of opening mechanism
- Need for multiple separate pulley blocks to achieve desired mechanical advantage
- Limited mounting flexibility when only one attachment type (hook or eye) is available
- Friction and rope wear caused by non-rotating or poorly aligned sheaves
- Inefficient use of crane or winch capacity due to improper force direction or load distribution
Technical Features
Technical Features
- Triple sheave design with three free-rotating wheels for reduced rope friction
- B-type attachment with both hook and eye for versatile mounting options
- Latch mechanism to open and close the frame for easy rope threading
- Designed for wire rope diameters of 10mm, 13mm, and 16mm depending on size
- Stainless steel latch pin and sheave bearings for smooth rotation and durability
- Drop-forged steel frame with heat treatment for strength and impact resistance
- Working load limit stamped on the frame for traceability and safety compliance
Specifications
Snatch Pulley Block Triple with Hook B Type Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 1T to 2T |
|---|---|
| Size | 4'' (1T), 5'' (1.5T), 6'' (2T) |
| Wire Rope Diameter | 10mm (4''), 13mm (5''), 16mm (6''), |
| Weight | 3.5kg (4''), 4.5kg (5''), 6kg (6''), |
| Attachment Type | Hook and eye (B-type) |
| Sheave Material | Steel with free-rotating bearings |
| Frame Material | Drop forged steel, heat treated |
| Design Factor | 4:1 minimum breaking load to safe working load |
| Surface Finish | Zinc plated or custom finish on request |
Materials
Materials And Finishes
- Drop forged steel frame with quench and temper heat treatment for high strength and fatigue resistance
- Steel sheaves with precision-machined bores and free-rotating bearings
- Stainless steel latch pin and retaining components to resist corrosion
- Zinc plating applied to the frame and sheaves for protection in outdoor and marine environments
- Custom surface finishes available including powder coating and electrophoretic black
Manufacturing Process
How This Product Is Made
1Drop forging of the frame and sheave blanks
2Quench and temper heat treatment of the forged components
3Machining of sheave bores, frame eyes, and hook attachment points
4Assembly of sheaves with free-rotating bearings and latch mechanism
5Surface treatment via zinc plating or powder coating as per order
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 conducted on each production batch 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 available
- Surface finish options: zinc plated, powder coated, or electrophoretic black
- Custom size and sheave configuration built to a supplied drawing
- Packing carton and pallet configuration tailored to customer 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 |
|---|---|
| Single sheave snatch block | The triple block offers higher mechanical advantage and load reduction but is bulkier and heavier |
| Fixed pulley block | The snatch block’s latch allows easier rope installation and removal, but a fixed block has no moving parts and may be more durable in continuous use |
| Double sheave snatch block | The triple block provides greater mechanical advantage but requires more space and has higher weight and cost |
| Hook-only pulley block | The B-type with both hook and eye offers more mounting flexibility, though it adds complexity to the frame design |
Use Guide
How To Use And Inspect Snatch Pulley Block Triple with Hook B Type
- Match the stamped working load limit to the calculated load, not the crane or winch rating
- Ensure the wire rope runs smoothly across all three sheaves and does not bind or rub on the frame
- Use the latch to open the frame for rope installation and close it securely before lifting
- Inspect the sheaves for free rotation and absence of grit or binding before each use
- Avoid side loading the block; keep the pull aligned with the sheave axis
- Retire the block if the frame shows deformation, the sheaves seize, or the marking is illegible
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
Snatch Pulley Block Triple with Hook B Type FAQ
What is the mechanical advantage of a triple snatch block?
A triple sheave block provides a 3:1 mechanical advantage, reducing the required lifting force by one-third of the load weight.
Can I use this block with synthetic rope?
It is designed for wire rope. Using synthetic rope may cause damage due to the sheave groove profile and lack of rope protection.
What is the design factor for these pulley blocks?
A standard 4:1 design factor is used, meaning 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 with each order on request.
Can I get a custom size or finish?
Yes, custom sizes, tonnage stamping, private label marking, and surface finishes like powder coating or electrophoretic black are available.
How are the blocks packed for export?
Standard carton and pallet packing. We can configure the carton count and pallet pattern to match your warehouse or retail requirements.
What sizes and capacities are available?
Available in 4'' (1T), 5'' (1.5T), and 6'' (2T) with wire rope diameters of 10mm, 13mm, and 16mm respectively.
Need A Quote On Snatch Pulley Block Triple with Hook B Type
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