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Description
Ronstan Series 55 Rachet Orbit Block, Triple Becket Cleat SwivelProduct Description Ronstan Series 55 Ratchet Orbit Block, Triple underhung becket, adjustable cleat, auto, swivel Features Automatic and manual ratchet in one block 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 Ultra low profile integrated beckets Sheave 2 5 32 in. Max. Rope 3 8
Product Description
Ronstan Series 55 Ratchet Orbit Block, Triple underhung becket, adjustable cleat, auto, swivel
Features
Automatic and manual ratchet in one block
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
Ultra low profile integrated beckets
Sheave Ø - 2 5/32 in.
Max. Rope Ø - 3/8 in.
Max. Cable Ø - in
Pin Ø - - in.
M.W.L. - 1650 lb.
B. L. - 3310 lb.
Weight - 13.8 oz.
Product Information
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. * Selected Series 55 models.
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 patented 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.
Applications
Mainsheet systems and spinnaker sheets on dinghies, catamarans, sport boats and small keel boats to 9 m (30 ft)
RF55410 when paired with RF56330B and a RF65101 lashed to the becket produces a powerful 8:1 mainsheet system for use on catamarans to 5.5m (18 ft). This can be increased to 9:1 by replacing RF35010 with a RF35202
Halyard, vang and backstay applications on boats a 8m (26 ft)
Control line applications on larger yachts
Materials
sheave: Hard anodised Aluminum
Ball Bearings: high compression strength carbon black Acetal
Frame/Cheeks: Toughened, glass fiber reinforced Nylon
Rope Link: UV stabilized, multi-strand impregnated SK75 Dyneema
Features
Sheave Ø - 2 5/32 in.
Max. Rope Ø - 3/8 in.
Max. Cable Ø - in
Pin Ø - - in.
M.W.L. - 1650 lb.
B. L. - 3310 lb.
Weight - 13.8 oz.
Product Information
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. * Selected Series 55 models.
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 patented 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.
Applications
Materials
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Easy to use
Color: Black
I don’t know how I lived without this device. Arthritic hands have made the job very hard. This has been a lifesaver. Don’t wait and get it now. It doesn’t hurt that it comes with some nice accessories.
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Reviewed in the United States on March 5, 2026
★★★★★ 5
Follow all the instructions
Color: Black
I really really like this product. Just be sure to read the directions about the charging required before first use. The instructions were simple and easy to understand when using a large bottle of wine. Be sure to hold the bottle securely or in may want to turn as the cart plunger goes down
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Reviewed in the United States on February 16, 2026
★★★★★ 4
Very good opener with some cheap attachments
Color: Black
This is a very good wine opener. It's light weight, well made, and opens bottles with no issues. Best part about this one that sets it apart from the competition is the charging base. I've tried a couple different ones so far and they all require you to plug a cord directly into the unit to charge it. With this one, it charges as soon as you set it into the base so you don't forget. The con with this one however is that the foil cutter is stored in the base and doesn't snap onto the unit itself like my old one. It's a very small inconvenience but just worth noting. The wine stopper and aerator are kind of like plastic toys but i really don't use them anyways. For the price though, having a charging base is worth the switch. Overall, really like this opener.
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Reviewed in the United States on April 6, 2025
★★★★★ 5
The functionality, speed & value are superior!
I LOVE THIS PRODUCT! I enjoy my evening glass or 2 of wine, BUT I always had to ask hubby to open the bottle or even the box for me. Granted he has never complained, but well, lets just say, I always felt guilty for making him get out of his recliner.
This wine opener has exceeding my expectations! It' is so easy to use. Use the cutting tool to break the foil seal, (after many uses I need new blades) place the opener with the corkscrew on top of the bottle. Get a firm grip of the neck of the bottle, & push the down button. Then let it quietly, quickly & with so much ease remove the cork!
It is so easy to use! Just plug it into a charger overnight & then you are ready to open many bottles of your favorite wine!
The functionality, speed & value are superior! Get one for your vacation bag, your kitchen, bar, etc, order one for your girlfriends/boyfriends, mother, aunt etc. :) They will thank you for it!
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Reviewed in the United States on March 9, 2025
★★★★★ 5
Good value
Color: Black
The accessories that come with it is a bonus
Seem to keep charge a long time.
Recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 6, 2026
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