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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
4.9 ★★★★★
Based on 16 reviews
Sort
Product Reviews
★★★★★ 5
Cozy Omegaverse
Format: Kindle
This is the true definition of Cozy Omegaverse. LA wedding coordinator meets her pack at the location for a couple’s destination wedding. Low angst because they are scent matched high heat with heats and knots. Everything you love about this genre with very little anxiety. Simply a fun experience to read and a book I will comeback to when I’m in a slump. I simply love reading this book
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
★★★★★ 4
Cute Omegaverse story
Format: Kindle
3.75 stars and 2 for spice. Adorable Omegaverse story about a wedding planner who has to go to a small town to plan a wedding for a movie star. While there, she meets her pack. This covers her struggles of not living there but trying to keep her relationship going with her 3 Alphas.
It's a quick read and cute, so I recommend it for people who like light-hearted RH stories.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2025
★★★★★ 3
real good
Format: Kindle
This was a solid read for the ABO universe. The characters are great. The smut scenes were well written. And the town is so cute I want to go there. It didn’t have much character development it just felt like I was getting to the characters as they were getting to know each other.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2025
★★★★★ 5
So sweet
Format: Kindle
It’s so unexpectedly sweet that it sneaks up on you. Each character is so unique and charming. I love the openness and honesty among their pack. It really blows me away how wonderful this omegaverse trope plays out.
I received a free copy of this book and am voluntarily leaving a review.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
★★★★★ 2
Needs editing
Format: Kindle
Cute storyline and promising characters, but the lack of editing is painful to read. I would love to read an edited version.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2025
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