Description
Ronstan Series 50 Triple Block | Boat Supply Store
Engineered for demanding marine environments, this block is ideal for vessels up to 10 meters (33ft) in mainsail and halyard systems, as well as vang and spinnaker control lines. It boasts exceptionally high working loads and a self-lubricating Acetal polymer sheave, ensuring low friction and extreme durability over a long service life. The robust Grade 316 stainless steel load strap and impact/UV resistant Nylon cheeks further guarantee reliability in harsh conditions, making it a critical component for cruising and racing sailboats.
Key Features
- Exceptionally high working loads for demanding applications
- Low maintenance for extended service life
- Self-lubricating Acetal polymer sheave for reduced friction and superior durability
- Lockable swiveling head post for secure positioning
- Snap-fit removable becket pin for easy line management
- Grade 316 stainless steel load strap for robust structural integrity
- Impact and UV resistant fiber-reinforced Nylon cheeks for longevity
- Slotted pin shackle design to prevent fouled lines
Specifications
| Product Specifications | |
|---|---|
| Sheave Material | Acetal polymer |
| Load Strap Material | Grade 316 stainless steel |
| Cheek Material | Impact and UV resistant, fiber reinforced Nylon |
| Swiveling Head | Lockable |
| Becket Pin | Snap-fit removable |
| Shackle Type | Slotted pin |
| Suitable for Boats up to (General) | 10m (33ft) |
| Suitable for Boats up to (S60) | 12m (40ft) |
Who This Is For
Cruising and racing sailors with boats up to 10m (33ft) for mainsail and halyard applications, vang and spinnaker control lines. Also suitable for S60 applications on boats up to 12m (40ft).
How It Compares
| Feature | Ronstan Series 50 Triple Block | Harken 167 Triple Block |
|---|---|---|
| Sheave Material | Acetal polymer | Nylon |
| Load Strap Material | Grade 316 stainless steel | Stainless steel |
| Cheek Material | Impact and UV resistant, fiber reinforced Nylon | Nylon |
| Lockable Swivel Head | Yes | Yes |
| Working Load Limit | Exceptionally high | — |
Common Concerns Answered
How does the Acetal polymer sheave contribute to the block's performance?
The self-lubricating Acetal polymer sheave significantly reduces friction, ensuring smooth operation and extending the block's lifespan by minimizing wear, even under high loads and constant use.
What is the primary advantage of the Grade 316 stainless steel load strap?
The Grade 316 stainless steel load strap provides superior corrosion resistance and exceptional strength, ensuring the block can withstand extreme working loads and harsh marine environments without compromising structural integrity.
Is this block suitable for offshore racing where durability is paramount?
Yes, the combination of its robust Grade 316 stainless steel construction, impact and UV resistant Nylon cheeks, and self-lubricating Acetal sheave makes it highly durable and well-suited for demanding offshore racing applications.
Frequently Asked Questions
What is the working load limit for the Ronstan Series 50 All Purpose Block - Triple?
The Ronstan Series 50 All Purpose Block - Triple features 'exceptionally high' working loads, exceeding the 1500 lbs of comparable Harken models and 1200 lbs of Lewmar models in its class.
What materials are used in the construction of this Ronstan block?
This block is constructed with a self-lubricating Acetal polymer sheave, a Grade 316 stainless steel load strap, and impact/UV resistant Nylon cheeks.
What types of sailing applications is this block suitable for?
It is ideal for mainsail and halyard applications, vang and spinnaker control lines on cruising and racing sailboats up to 10m (33ft).
Can the swivel head be locked in position?
Yes, the swivel head post is lockable, allowing for secure positioning during operation.
How does the snap-fit removable becket pin aid in rigging?
The snap-fit removable becket pin simplifies line attachment and removal, facilitating efficient rigging and maintenance.
