SKU: 61515769701

Ronstan Series 40 Ball Bearing Orbit Block - Single - Becket - Cleat - Swivel Head

Sale price$91.05 Regular price$101.17
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

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Description

Ronstan Series 40 Ball Bearing Orbit Block - Single - Becket - Cleat - Swivel HeadSeries 40 Ball Bearing Orbit Block Single Becket Cleat Swivel Head Features: Ultra Lightweight Low friction 2 stage Orbital ball bearing system Highest working load in its class Low profile and compact High performance cleating Lightweight Kilogram for kilogram of working load, BB and RT Orbit Blocks are the worlds lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimizes the mass of

Series 40 Ball Bearing Orbit Block - Single - Becket - Cleat - Swivel Head

Features:

  • Ultra Lightweight
  • Low friction 2-stage Orbital ball bearing system
  • Highest working load in its class
  • Low profile and compact
  • High performance cleating

Lightweight

Kilogram for kilogram of working load, BB and RT Orbit Blocks™ are the world’s lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimizes the mass of the inactive return race and hub.

Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible.

Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block.

Highest Working Load In It's Class

The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximizes load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.

The floating sheave and bearing system is supported by a fiber-reinforced load frame. The design was computer modeled to be stress optimized.

Applications:

  • Mainsheet systems on spinnaker sheet on dinghies to 5m (16ft)
  • Spinnaker sheets on dinghies, sportsboats and small keel boats to 5m (16ft)
  • Halyard, vang and backstay applications on boats to 8m (26ft)
  • Control line applications on larger yachts

Materials:

  • Ball Bearings - High compression strength carbon black Acetal.
  • Stage 2 Bearing - Glass fibre reinforced, MoS2 impregnated Nylon
  • Frame/Cheeks - Toughened, glass fibre reinforced Nylon
  • Sheave - Carbon fiber reinforced, PTFE impregnated Nylon
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: 61515769701

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Good old fashioned truth
Draper, US
★★★★★ 5
Grey hoodie...need I say more?
Size: Medium, Color: Grey Heather Full Zip
Can't beat this as far as value, quality and comfort. You would think a plain grey zip up hoodie would be easy to find at any local department store, but nope. So when I saw this going for an extremely good price, it was a no-brainer. The fit is proper and the material is soft inside and out. Very easy to wash and keep in good shape and great for transitional season changes. All pockets, hood and zipper works as needed and great quality.
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Reviewed in the United States on April 12, 2026
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Steve S
Waukegan, US
★★★★★ 5
Comfortable and soft zip up hoodie.
Size: Medium, Color: Grey Heather Full Zip
Light weight , soft and very comfortable. I am 5ft 10in 155 lbs and the medium fit true to size. No shrinkage after several washes and dry cycles. Quality appears to be decent with no pills after several washes . Based on this I ordered a second one.
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Reviewed in the United States on May 14, 2026
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Luv2shop
New York, US
★★★★★ 5
Great Price, Great Hoodie!
Size: X-Large, Color: Red Full Zip
Gave these to kids for Christmas. The price was right and there are so many colors! The fit is true to size and the colors are vibrant. They are on the thin size, but we like them that way. Not to hot, not to cold. The stitching is average but the fabric used makes up for that as these hoodies are sooo soft! Sooo comfortable to wear. We will definitely be ordering more when these wear out for sure. Recommended!
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Reviewed in the United States on January 30, 2026
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Cassandra Duncan
Waukegan, US
★★★★★ 4
Great Jacket
Size: Medium, Color: Black Full Zip
Great fleece jacket comfortable and durable. The sizing was a perfect fit
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Reviewed in the United States on May 20, 2026
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Michelle Rode
Los Angeles, US
★★★★★ 5
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Size: Small, Color: Safety Green
What a great value! I bought three jackets for my husband for work. He loves them...they're comfortable and lightweight! Covers his upper body and durable.
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Reviewed in the United States on May 14, 2026

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