Click to enlargeRonstan Series 30 High Load Exit Box f/Single Rope or Wire
Manufacturer: RonstanPart #: RF31712SKU: 55172
- 760 lb
- Stainless Steel
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Item #: 55172
Category: Hardware
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Description
Series 30 High Load Exit Box for Single Rope or Wire Plain bearing sheaves are ideal for halyards and other applications where high static loads are likely to be encountered Applications: Ideal applications where lines (rope or wire) need to be led through decks, bulkheads or spars minimizing friction and chafing Materials: Nylatron®l sheave Grade 316 Stainless Steel cheeks Specifications: Sheave Ø: 30. 0mm(1-3/16") Max.
Rope Ø: 8. 0mm(5/16") Max.
Cable Ø: 4. 0mm(5/32") B.
L. : 800kg(1,760lbs)
Specifications
| Brand | Ronstan |
|---|---|
| Part Number | RF31712 |
| EverTide SKU | 55172 |
| UPC | 9316800335114 |
| Material | Stainless Steel |
Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.
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Returns & warranty
Returns are accepted within 30 dayson items that are unused and in their original packaging. Some items may be subject to a manufacturer restocking fee. Special-order items may not be eligible — if you're unsure, ask us before ordering.
Ronstan productscarry the manufacturer's standard warranty. For a warranty claim or a return authorization, see our full returns policy or contact us.
Sailing — frequently asked
- How do I size a block for my sailboat?
- Match the block to the line diameter it will carry and to the working and breaking loads of the system (sheet, halyard, control line). Makers publish load ratings and line-size ranges — choose a block whose working load comfortably exceeds the real-world load, without going so large it adds needless weight.
- What is running rigging?
- Running rigging is the moving lines that control the sails — sheets, halyards, and control lines — as opposed to standing rigging (the fixed wire that holds up the mast). Running rigging should be matched to the boat’s blocks, clutches, and winches for smooth, reliable sail handling.
- How do I maintain sailboat winches and hardware?
- Rinse with fresh water after sailing, keep sheaves and bearings clean, and periodically service winches (disassemble, clean, and re-grease per the maker’s instructions). Marine-grade stainless and good maintenance keep hardware working smoothly when loads are high and timing matters.
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