Description
Ronstan Series 40 High Load Exit Box | Boat Supply Store
This specialized deck hardware addresses the critical need for low-friction line management under significant static loads, commonly encountered with halyards and control lines on performance sailboats or wire rigging applications. Engineered with a plain bearing Nylatron® sheave and robust Grade 316 Stainless Steel cheeks, it reliably guides lines through structural elements with a maximum working rope diameter of 10mm or wire up to 5mm. Its high breaking load of 1,000kg (2,200lbs) ensures durability and safety when integrated into a vessel's hull, deck, or spars.
Key Features
- Optimized for single rope or wire routing
- Exceptional load handling with 1,000kg breaking load
- Durable Nylatron® sheave for reduced wear
- Corrosion-resistant Grade 316 Stainless Steel construction
- Minimizes friction and chafe on critical lines
- Ideal for through-deck or bulkhead installations
- Plain bearing design for high static load efficiency
- Reliable performance in demanding marine environments
Specifications
| Product Specifications | |
|---|---|
| Sheave Ø | 40.0mm |
| Max. Rope Ø | 10.0mm |
| Max. Cable Ø | 5.0mm |
| Breaking Load (B.L.) | 1,000kg |
| Cheek Material | Grade 316 Stainless Steel |
| Sheave Material | Nylatron® |
Who This Is For
Sailors and marine technicians requiring a high-strength, low-friction solution for routing running rigging or wire systems through vessel structures. Boat builders will find this component essential for integrated deck and bulkhead hardware on both new builds and refits.
How It Compares
| Feature | Ronstan Series 40 High Load Exit Box | Competitor |
|---|---|---|
| Sheave Ø | 40.0mm | — |
| Max. Rope Ø | 10.0mm | — |
| Max. Cable Ø | 5.0mm | N/A, N/A |
| Breaking Load (B.L.) | 1,000kg | — |
| Sheave Material | Nylatron® | Composite, Composite |
| Cheek Material | Grade 316 Stainless Steel | Stainless Steel, Composite |
Common Concerns Answered
Is the price higher than standard blocks?
The price reflects its specialized design for high static loads and through-hull integration, offering superior durability and load capacity compared to basic blocks, ensuring long-term value.
Is installation straightforward?
Installation requires precision, involving accurate measurements, drilling, and proper sealing for watertight integrity and structural soundness, indicating a moderate difficulty level.
What if I need to route multiple lines?
This model is specifically designed for a single rope or wire. For multi-line applications, separate units or different hardware solutions would be necessary.
Frequently Asked Questions
What is the maximum rope diameter this exit box can accommodate?
This Ronstan Series 40 High Load Exit Box can accommodate single ropes up to 10mm in diameter.
What is the maximum wire/cable diameter this exit box can accommodate?
The exit box is designed to accommodate wire or cable up to 5mm in diameter.
What is the breaking load (B.L.) of the Ronstan Series 40 High Load Exit Box?
The breaking load (B.L.) for this high load exit box is rated at 1,000kg (2,200lbs).
What materials are used in the construction of this exit box?
The exit box features a durable Nylatron® sheave and robust cheeks constructed from Grade 316 Stainless Steel.
What are the ideal applications for this type of exit box?
Ideal applications include managing high static load halyards, control lines, or wire rigging as they pass through decks, bulkheads, or spars on sailboats and other marine vessels.
