SKU: 75401915671

Ronstan Series 40 Orbit Single Block w/Becket & Swivel Head

Sale price$36.83 Regular price$40.92
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Description

Ronstan Series 40 Orbit Single Block w/Becket & Swivel HeadSeries 40 Orbit Single Block with Becket & Swivel Head 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

Series 40 Orbit Single Block with Becket & Swivel Head

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
  • Stainless steel shackle head for unlimited block rotation, and compatibility with sharp fixing points
  • Integrated becket

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.: 880 lb.
  • B. L.: 1760 lb.
  • Weight: 2.1 oz.

Manufacturer : Ronstan
Manufacturer Part No : RF48100
UPC : 9316800624744
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 75401915671

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Product Reviews
V
Verified Purchase
Viktoriia Kharalampova
West Palm Beach, US
★★★★★ 5
Great quality
Color: 6pcs
Great quality. Almost like original mops.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
D
Verified Purchase
Demelza Irizarry
Lowell, US
★★★★★ 5
Clean mop heads are important!
Color: 6pcs
Fits the eufy Omni C20 robot vac perfectly. Would happily purchase again keep my floors clean
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025
A
Amazon Customer
Houston, US
★★★★★ 5
Fits and works the same as the original
Color: 6pcs
I like to change my washing pads on the Eufy C20 every Friday (floors are vacuumed Mon, Wed, Fri and get washed on Mon and Fri as well). I will send the mop out too just to do the kitchen once I have had a big cooking session. These fit well and work as well as the original. I'm so happy to have extras as my laundry sometimes take several days to get caught up. Recommended.
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Reviewed in the United States on June 13, 2025
A
Verified Purchase
Amazon Customer
Belleville, US
★★★★★ 2
Poor quality
Color: 12pcs
I ordered these for my Eufy robot mop/ vacuum. While they fit great they are of terrible quality. They shredded on the first use and I have tile floors. Maybe I got a defective batch but I will not be buying these again🫤
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Reviewed in the United States on May 28, 2026
C
Verified Purchase
Caitlin
Battle Creek, US
★★★★★ 1
Save your time and order the eufy brand.
Color: 6pcs
Started fraying immediately. Tried a different pair and had the same problem.
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Reviewed in the United States on May 21, 2026

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