Ronstan RF48510 Series 40 Orbit BB Quin Block with Becket & Swivel Shackle

Series 40 Orbit BB Quin Block with Becket & Swivel Shackle

The Series 40 ball-bearing Orbit Blocks™ provides 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 fiber 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 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 highly 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 adjustable for setting 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.

Features:

• Class-leading dynamic and static load ratings


• Lightweight, yet strong. Toughened, glass fiber 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

Applications

• Mainsheet systems and 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

Specifications:

• Sheave Ø: 1-9/16 in.


• Max. Rope Ø: 3/8 in.


• Pin Ø: 5/32"


• M.W.L.: 1320 lb.


• B. L.: 2650 lb.


• Weight: 8.7 oz.

The Ronstan RF48510 Series 40 Orbit BB Quin Block with Becket & Swivel Shackle offers exceptional strength, performance, and reliability. Designed with class-leading dynamic and static load ratings, this block is perfect for a variety of applications, including mainsheet systems and control lines on both dinghies and larger yachts.

Crafted from lightweight, toughened glass fiber reinforced nylon, this block replaces traditional stainless steel straps to achieve a balance of durability and performance. Its versatile design accommodates multiple sheave options, allowing for setups up to a 12:1 purchase mainsheet system suitable for off-the-beach performance catamarans.

Equipped with a carbon-reinforced C-Cleat* for secure rope holding and low entry/exit effort, the Ronstan RF48510 also features adjustable stainless steel cleat arms for optimal cleating angles. The innovative 2-stage ball bearing system minimizes friction, ensuring efficient trimming and smooth operation under load.

Features:
* Class-leading dynamic and static load ratings for reliable performance
* Lightweight yet strong construction with toughened glass fiber reinforced nylon
* Low friction 2-stage ball bearing system for effortless trimming
* Versatile options including soft attachment, lashing, and traditional swivel shackle head
* Compact and low-profile design enhances usability
* High-performance cleating for secure rope management