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Description
Ronstan Series 40 BB Orbit Cheek BlockProduct Description Ronstan Series 40 BB Orbit Cheek Block Features Class leading dynamic and status load rating Lightweight, yet strong. Toughened, glass fibre reinforced nylon replaces stainless steel straps used in our traditional utility blocks Low friction 2 stage ball bearing system for efficient and effortless trimming Soft attachment, lashing and traditional swivel shackle head options Low profile and compact High performance cleating
Product Description
Ronstan Series 40 BB Orbit Cheek Block
Features
Class leading dynamic and status load rating
Lightweight, yet strong. Toughened, glass fibre reinforced nylon replaces stainless steel straps used in our traditional utility blocks
Low friction 2-stage ball bearing system for efficient and effortless trimming
Soft attachment, lashing and traditional swivel shackle head options
Low profile and compact
High performance cleating
Specifications
Sheave Ø - 1 9/16 in. (40mm)
Max. Rope Ø - 3/8 in. (10mm)
Max. Cable Ø - in. (mm)
Pin Ø - in. (mm)
Max. Working Load - 880 lb. (400kg)
B. L. - 1760 lb. (800kg)
Weight - 1.2 oz. (33g)
Product Information
The new Series 40 ball bearing Orbit Blocks™ provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability.
As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the- beach performance catamarans.
Series 40 Orbit Blocks™ are fitted with our carbon reinforced C-Cleat™ for secure rope holding with low entry and exit efforts, and fairleads for fast action from any angle. Cleat arms are made from stainless steel and are adjustable for setting to your preferred cleating angle.
Ball Bearing versions incorporate our 2-stage bearing system using ball bearings to minimize friction and a secondary full-contact bearing to maintain low friction across the full working load range.
High Load versions are designed specifically for any application where high dynamic or static loads are expected. They feature a high strength grade 2205 stainless steel sheave & hub together with a triple bearing race to maintain low friction at very high loads.
Applications
Mainsheet systems on spinnaker sheet on dinghies
Spinnaker sheets on dinghies, off-the-beach catamarans and sportsboats to 8m (26ft)
Halyard, vang and backstay applications on boats to 9m (30ft)
Control line applications on larger yachts
Materials
Frame/cheeks: Toughened, glass fibre reinforced nylon.
Head fittings, hubs & fasteners: Grade 316 stainless steel.
BB Sheaves and balls: High compression strength acetal.
Features
Sheave Ø - 1 9/16 in. (40mm)
Max. Rope Ø - 3/8 in. (10mm)
Max. Cable Ø - in. (mm)
Pin Ø - in. (mm)
Max. Working Load - 880 lb. (400kg)
B. L. - 1760 lb. (800kg)
Weight - 1.2 oz. (33g)
Product Information
The new Series 40 ball bearing Orbit Blocks™ provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability.
As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the- beach performance catamarans.
Series 40 Orbit Blocks™ are fitted with our carbon reinforced C-Cleat™ for secure rope holding with low entry and exit efforts, and fairleads for fast action from any angle. Cleat arms are made from stainless steel and are adjustable for setting to your preferred cleating angle.
Ball Bearing versions incorporate our 2-stage bearing system using ball bearings to minimize friction and a secondary full-contact bearing to maintain low friction across the full working load range.
High Load versions are designed specifically for any application where high dynamic or static loads are expected. They feature a high strength grade 2205 stainless steel sheave & hub together with a triple bearing race to maintain low friction at very high loads.
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
4.7 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Affordable Upgrade from Cheap Sunglasses
These sunglasses are stylish, comfortable, and well-made. They came with a really nice case and a soft bag that doubles as a cleaning cloth, which is super handy.
I love the shape and style of the frames — they’re flattering without being over the top. The lens color is dark enough to block the sun but not so dark that it makes everything hard to see. The overall quality feels solid, especially compared to the cheaper sunglasses
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Reviewed in the United States on September 8, 2025
★★★★★ 5
Wow amazing 🤩
Very good quality and price. I liked the design; it arrived exactly as pictured and with all the accessories. It's good if you want to treat yourself like I did or give a gift to someone special.
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Reviewed in the United States on November 6, 2025
★★★★★ 5
Elegant and great quality
I bought these sunglasses for my sister’s birthday, and she loved them! They’re stylish, comfortable, and perfect for driving. The brand never disappoints — I absolutely love it
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Reviewed in the United States on October 22, 2025
★★★★★ 5
Cute and was exactly as expected
It is exactly as shown. I have a very small head and these did not slip down my nose. The lens is large as it says in the description but I like the coverage from the sun. Great price!
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Reviewed in the United States on June 13, 2025
★★★★★ 5
Nice!!
These lenses are very nice and protect you well from the sun. They are dark enough to be able to use when the sun is very strong in the afternoon. It comes with its mandarin case, it has the logo outside and its sleeve also with its cleaning wipe. I always loved it, I always drive them in the car.
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Reviewed in the United States on October 17, 2025