Click to enlargeRonstan Series 40 All Purpose Block - Single Cheek
Manufacturer: RonstanPart #: RF41811SKU: 70607
- 26 ft
- Stainless Steel
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Item #: 70607
Category: Blocks
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Description
Series 40 All Purpose Block - Single Cheek Features: Exceptionally high working loads Low maintenance, long service life Self-lubricating sheave All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads.
For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Can be mounted on masts and booms using the curved surface adapter.
Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave. Stackable with Ronstan Series 40 deck organizers.
Applications: Mainsheet Halyard Vang Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft) Materials: U. V.
stabilised Acetal sheaves Impact and U. V.
resistant, fiber reinforced Nylon cheeks Grade 316 stainless steel bearing race Alloy cheek plates
Specifications
| Brand | Ronstan |
|---|---|
| Part Number | RF41811 |
| EverTide SKU | 70607 |
| UPC | 9316800341795 |
| Material | Stainless Steel |
| Cable Length | 26 ft |
Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.
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| Material | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel |
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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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