Description
Ronstan Series 40 Block w/ Universal Head | Boat Supply Store
Engineered for demanding marine environments, this block excels in high-load applications on smaller keelboats and off-the-beach craft. Its 40mm Acetal sheave supports up to 10mm diameter line and achieves an impressive 400kg (880lbs) Working Load Limit. The innovative Captive Lock™ universal head offers both swivel and fixed configurations, streamlining rigging on vessels up to 8 meters, ideal for precise control of sheets and halyards.
Key Features
- Exceptionally high working loads of 400kg (880lbs)
- Low maintenance for extended service life
- Self-lubricating Acetal sheave for smooth operation
- Versatile Captive Lock™ universal head allows swivel or fixed attachment
- Slotted pin shackle prevents fouled lines
- Durable construction with Nylon cheeks and Grade 316 stainless steel components
- Lightweight design at only 71g (2.5oz)
- Ideal for up to 10mm rope diameter
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 40mm |
| Max Rope Diameter | 10mm |
| Pin Diameter | 5mm |
| Working Load Limit (MWL) | 400kg (880lbs) |
| Breaking Load (BL) | 1,000kg (2,200lbs) |
| Weight | 71g (2.5oz) |
| Sheave Material | Acetal |
| Cheek Material | Nylon |
| Component Material | Grade 316 Stainless Steel |
| Head Type | Captive Lock™ Universal Head (Swivel or Fixed) |
Who This Is For
This block is designed for cruising and racing sailors operating off-the-beach catamarans, one design classes, and sportsboats up to 8 meters (26 feet). It is an excellent choice for those requiring a durable and versatile block for managing sheets, halyards, and control lines with high load capacities.
How It Compares
| Feature | Ronstan Series 40 Block w/ Universal Head | Competitor |
|---|---|---|
| Sheave Ø | 40mm | — |
| Max. Rope Ø | 10mm | — |
| M.W.L. | 400kg (880lbs) | — |
| Head Type | Captive Lock™ Universal Head (Swivel or Fixed) | Swivel, Swivel |
| Weight | 71g (2.5oz) | Approx. 65g, Approx. 70g |
Common Concerns Answered
What is the maximum rope diameter this Ronstan block can accommodate?
The Ronstan Series 40 All Purpose Block is engineered to accommodate a maximum rope diameter of 10mm.
What is the working load limit (MWL) for the Ronstan Series 40 All Purpose Block?
This block features an exceptionally high Working Load Limit (MWL) of 400kg (880lbs), ensuring reliability under significant stress.
Are there any common complaints about this specific Ronstan block?
No widely reported complaints exist for this specific Ronstan Series 40 All Purpose Block, indicating a high level of customer satisfaction regarding its performance and durability.
Frequently Asked Questions
Can the universal head on this block be fixed in position?
Yes, the Captive Lock™ universal head on the Ronstan Series 40 All Purpose Block is designed to be configured for either swivel or fixed positioning, offering installation flexibility.
What types of sailing applications is this block suitable for?
This block is highly suitable for demanding applications on off-the-beach catamarans, one design classes, and sportsboats up to 8 meters (26 feet), including use on sheets, halyards, and control lines.
What materials are used in the construction of the Ronstan Series 40 All Purpose Block?
The block is constructed with Acetal sheaves for low friction and durability, Nylon cheeks for impact resistance, and Grade 316 stainless steel components for superior corrosion resistance.
How easy is it to install this Ronstan block?
Installation difficulty is rated as '2 - Easy', requiring basic tools to attach to a mounting point or shackle, with the universal head providing versatile attachment options.
What is the pin diameter for attaching this block?
The pin diameter for attaching the Ronstan Series 40 All Purpose Block is 5mm.
