Description
SeaSure 25mm Treble Block w/V-Jam | Boat Supply Store
Create essential mechanical advantage for onboard tasks with the SeaSure 25mm Treble Block w/V-Jam, a robust and economical solution. This block integrates a V-jam cleat for secure rope retention, crucial for establishing purchase systems like a 6:1 for lifting applications. It features a durable 25mm Arnitel sheave and marine-grade stainless steel construction, capable of handling up to an 8mm diameter line with a significant 1250kg breaking load, ensuring reliability in demanding marine environments.
Key Features
- 25mm Sheave Diameter for versatile line handling.
- Plain Bearing design for simplicity and durability.
- Marine-Grade Stainless Steel side plates and rivets for corrosion resistance.
- Hard-Wearing Arnitel Sheave offers excellent abrasion resistance.
- Integrated V-Jam provides secure and efficient rope cleating.
- Facilitates Purchase Systems for enhanced lifting capabilities.
- Supports Maximum Rope Diameter of 8mm for broad compatibility.
- Rated for a Breaking Load of 1250kg for robust performance.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 25mm |
| Bearing Type | Plain Bearing |
| Material | Marine-grade stainless steel side plates and rivets, Arnitel sheave |
| Max Rope Diameter | 8mm |
| Breaking Load | 1250kg |
| Integrated Cleat | V-Jam |
Who This Is For
Sailors and boaters requiring an efficient and secure method to create mechanical advantage for tasks such as lifting or tensioning lines. DIY enthusiasts will also find this block useful for various rigging and utility applications on board.
How It Compares
| Feature | SeaSure 25mm Treble Block w/V-Jam | Competitor |
|---|---|---|
| Sheave Diameter | 25mm | — |
| Bearing Type | Plain Bearing | Ball Bearing, Plain Bearing |
| Integrated Jam Cleat | Yes (V-Jam) | No, No |
| Max Rope Diameter | 8mm | — |
| Breaking Load | 1250kg | — |
Common Concerns Answered
Are plain bearings as efficient as ball bearings for high-load applications?
Plain bearings, while simpler and often more robust, can exhibit higher friction than ball bearings under extremely high loads or during frequent, rapid adjustments. For tasks requiring minimal friction and high-speed operation, a ball bearing block might be preferred.
Is the breaking load sufficient for heavy-duty lifting?
With a breaking load of 1250kg, this block is suitable for many lifting and tensioning applications, particularly when configured in a purchase system. For extremely heavy-duty scenarios or critical structural loads, verifying the total system load and considering higher-rated hardware is advisable.
Does the V-jam securely hold all types of rope?
The V-jam is designed for secure rope holding, but its effectiveness can vary slightly with rope material and condition. It functions optimally with most standard marine ropes, ensuring reliable cleating for tensioning and purchase systems.
Frequently Asked Questions
What is the maximum rope diameter this block can accommodate?
This SeaSure 25mm Treble Block w/V-Jam can accommodate a maximum rope diameter of 8mm.
What is the breaking load of the SeaSure 25mm Treble Block w/V-Jam?
The breaking load for this block is rated at 1250kg.
What materials is the SeaSure 25mm Treble Block w/V-Jam made from?
The block features marine-grade stainless steel side plates and rivets, paired with a durable Arnitel sheave.
Can this block be used for lifting heavier objects?
Yes, this block is suitable for lifting applications, especially when configured as part of a purchase system (e.g., a 6:1 system), leveraging its 1250kg breaking load.
How does the V-jam feature work?
The V-jam is an integrated cleat mechanism designed to grip and hold a rope securely in place, allowing for easy tensioning and release without the need for complex knots, making it ideal for creating purchase systems.
