Description
SeaSure 25mm Single Block w/V-Jam | Boat Supply Store
Maximize your rigging efficiency with a mechanically advantageous system utilizing the SeaSure 25mm Single Block w/V-Jam. Engineered with robust marine-grade stainless steel side plates and rivets, this block incorporates an Arnites sheave capable of handling up to an 8mm diameter rope. Its integrated V-Jammer ensures secure line control, making it an ideal component for creating 2:1 purchase systems for sail control or general lifting applications on vessels navigating the Gulf Coast.
Key Features
- Robust construction with marine-grade stainless steel side plates and rivets
- Secure line control via integrated V-Jammer
- Versatile application for creating 2:1 purchase systems
- Durable Arnites (plastic) sheave for smooth operation
- Convenient becket attachment for secure fastening
- Cost-effective solution for mechanical advantage
- Reliable plain bearing design
- Compact size with 25mm sheave diameter
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 25mm |
| Bearing Type | Plain Bearing |
| Max Rope Diameter | 8mm |
| Breaking Load | 500kg |
| Materials | Marine-grade stainless steel side plates and rivets, Arnites sheave |
| Features | Becket attachment, V-Jammer |
Who This Is For
Sailors and boat owners requiring a reliable, single block with integrated line securing capabilities for optimizing sail trim or establishing purchase systems. DIY enthusiasts can also leverage this versatile component for various rigging needs.
How It Compares
| Feature | SeaSure 25mm Single Block w/V-Jam | Competitor |
|---|---|---|
| Sheave Diameter | 25mm | — |
| Max Rope Diameter | 8mm | — |
| Breaking Load | 500kg | — |
| Jamming Cleat | Yes (V-Jammer) | No |
| Becket Attachment | Yes | No |
| Bearing Type | Plain Bearing | Ball Bearing |
Common Concerns Answered
Is the plain bearing efficient enough for high-load situations?
For extremely high-speed or demanding load applications, a ball bearing block may offer superior efficiency. However, for typical sailing and rigging tasks, the plain bearing provides reliable performance at a greater value.
What if I need a higher breaking load than 500kg?
The 500kg breaking load is suitable for many common marine applications. For heavy-duty lifting or critical load-bearing systems exceeding this capacity, a higher-rated block specifically designed for those demands would be necessary.
Does the V-Jammer hold lines securely?
Yes, the integrated V-Jammer is designed to effectively lock off lines, providing secure control and preventing unwanted slippage in various rigging scenarios.
Frequently Asked Questions
What is the maximum rope diameter this block can accommodate?
This SeaSure 25mm Single Block w/V-Jam can accommodate a maximum rope diameter of 8mm.
What is the breaking load of the SeaSure 25mm Single Block w/V-Jam?
The breaking load for this block is rated at 500kg.
What materials are used in the construction of this block?
The block features marine-grade stainless steel side plates and rivets, along with an Arnites (plastic) sheave.
Can this block be used for creating a 2:1 purchase system?
Yes, this block is suitable for creating 2:1 purchase systems, which effectively doubles the mechanical advantage applied to the load.
What is the purpose of the V-Jammer on this block?
The V-Jammer is a cleating mechanism integrated into the block that securely locks off a rope, preventing it from slipping under tension, ideal for maintaining sail trim or other secured lines.
