| DS1370-55257 | RF56100 |
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$110.52 | |
| Part No. | MPN | Qty | Price | Actions |
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Ronstan Series 55 Ratchet Orbit Block™ - Single - Swivel Head - Auto & Manual
RONSTAN SERIES 55 RT ORBIT BLOCK SINGLE SWIVEL HEAD
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Technical Information Guide
Series 55 Ratchet Orbit Block™ - Single - Swivel Head - Auto & Manual
Automatic Ratchet Block
Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong.
Awesome Ratchet Block Holding Power
Quite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.
Features:
Applications:
Materials:
Specifications:
Sheave Ø: 55mm(2")
Max. Rope Ø: 10mm(1/2")
M.W.L.: 250kg(550lbs)
B. L.: 650kg(1,430lbs)
Weight: 82g(2.9oz)
Automatic Ratchet Block
Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong.
Awesome Ratchet Block Holding Power
Quite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.
Features:
- Up to 20:1 holding power
- Smooth easing of sheets
- High performance cleating
- Swivel shackle head for unlimited block rotation.
- Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points.
- Automatic & manual ratchet block
Applications:
- Mainsheet systems and spinnaker sheets on dinghies, sportsboats and small keel boats to 8M(26')
- Halyard, vang and backstay applications on boats to 8M(26')
- Spinnaker sheets on sportsboats and small keel boats (lateral lead blocks)
Materials:
- Sheave: Hard anodised Aluminium
- Ball Bearings: High compression strength carbon black Aceetal
- Frame/Cheeks: Toughened, glass fiber reinforced Nylon
- Rope Link: UV stabilized, multi-strand impregnated SK75 Dyneema®
- Head fitting: grade 316 stainless steel
Specifications:
Sheave Ø: 55mm(2")
Max. Rope Ø: 10mm(1/2")
M.W.L.: 250kg(550lbs)
B. L.: 650kg(1,430lbs)
Weight: 82g(2.9oz)
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Apply NowRETURN POLICY
We accept returns on most items within 30 days of delivery.
To start a return, submit a Return Authorization (RA) request using the form below. The RA must be issued within 30 days of the delivery date, and the item must be received back at our warehouse within 14 days of the RA being issued.
Requirements for a full refund include:
1. Item must be in new, uninstalled condition.
2. Item must be returned with all original packaging, hardware, and accessories.
3. Return shipping is prepaid by the customer unless the item arrived damaged, defective, or incorrect due to our error.
4. RA number must be clearly marked on the outside of the package.
NON-RETURNABLE ITEMS: The following are final sale and cannot be returned:
- Special order, built-to-order, or custom items
- Items cut, drilled, modified, or installed
- Items missing original packaging or accessories
- Items without proof of purchase
General - Cancellations, Shipping Damage, Missing Packages, Shipment Refusals:
Claims of shipping damage, incorrect items, or missing items must be reported within seven (7) days of delivery. For LTL freight shipments, damage must be noted on the delivery receipt at the time of delivery. Concealed damage claims after a clean signed POD are difficult to recover and may be denied by the carrier. Orders that have been processed and shipped cannot be cancelled, and you may need to wait until you receive the merchandise in order to return it. Customer is responsible for all costs associated with refused shipments including carrier fees, freight to the customer, and return freight. We reserve the right to refuse returns that are sent COD, without a return authorization, show signs of undisclosed installation/use, have missing parts/packaging, missing proof of purchase, or have SKU numbers that do not match our records. If you do not comply with any of the above conditions, we reserve the right to refuse the return/exchange, or to impose different or additional conditions.
Must Be Returned to the Following Address:
Marine Depot Direct
Returns Department
14716 Central Ave
Chino CA 91710
PARTIAL REFUNDS OR RESTOCKING FEES
| Condition | Refund |
|---|---|
| New condition, within 30-day window | 100% of the item price (less return shipping) |
| New condition, past 30-day window (case-by-case)* | 80% of the item price |
| Items that are damaged, missing parts, not in the original condition, or have obvious signs of use for reasons not due to our error | Up to 50% of the item price |
| Products that are unusable, destroyed, or incomplete to the point of no resale value | 0% of the item price |
*For most items, the return window is 30 days after delivery. LTL freight items, oversized items, and large hardware assemblies may be subject to an additional restocking fee to cover return freight and inspection. This will be disclosed when the RA is issued.
How Refunds Are Issued
If you're receiving a refund after we have received your item, it may take an additional three to five business days to process your return fully and issue your refund.
Once we issue your refund, it may take additional time for your funds to be made available in your account by your financial institution. See the following table for more details.
| Refund Method | Refund Time (After Refund Is Processed) |
|---|---|
| Credit card | Three to five business days |
| Debit card | Up to 10 business days |
| Checking account | Up to 10 business days |
Shipping
In-stock items ship within 1 business day from our California or Florida warehouse. Items showing a lead time above ship once stock arrives at our warehouse.
> Same-day shipping on orders placed before 9:00 AM Pacific Time
> Standard ground delivery is 3-7 business days. Need it sooner? Choose Next Day Air or 2nd Day Air at checkout.
> Free shipping on U.S. orders over $99 (excluding AK and HI)
> Oversized items ship by LTL freight. Inspect the shipment and note any damage on the delivery receipt before signing.
> International shipping to Canada and other countries available at checkout
For full details, see our Shipping Policy.