SKU: 70125565855

Ronstan Series 40 Orbit BB Cheek Block

Sale price$48.58 Regular price$53.98
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Description

Ronstan Series 40 Orbit BB Cheek BlockSeries 40 Orbit BB Cheek Block 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

Series 40 Orbit BB Cheek Block

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.
  • M.W.L.: 880 lb.
  • B. L.: 1760 lb.
  • Weight: 1.2 oz.

Manufacturer Part Numbers: RF48151
GRP:WRO
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: 70125565855

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4.0 ★★★★★
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Grace
Lexington, US
★★★★★ 5
Helpful upgrade when staying between short-term housing
Laying it out was quick, and once it settled, the bed instantly felt gentler on the shoulders and hips. The padding feels thick without being bulky, and it molds just enough so that you feel supported without sinking. The airflow is surprisingly good. Even after lying still for long periods, the surface never turns warm or clammy. That was important since the mattress underneath didn’t have much ventilation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 25, 2025
E
Verified Purchase
✨erica leigh ✨
Massapequa, US
★★★★★ 5
bury me in snuggle sac!!
soo i’ve purchased 6 of the fuzzy blankets, 2 packs of the socks, the cardigan, and now this gem of a cooling blanket! im usually a heavy fluffy blanket person, regardless of season or temperature, but living in florida it’s sometimes a struggle. figured i’d give this one a try since i’m obsessed with snuggle sac. the blanket is very thin, intentionally, and is such a deliciously soft and unique material! the one side is cooling and really cold to the touch! both sides look very rich and high quality. definitely makes a difference so i’m not waking up hot anymore! in order to replicate my heavy blanket habit, i use the snuggle sac ribbed blanket on top of it, and can always remove it in the night. so happy with my purchase! always keeping my eye out for new releases from them.
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Reviewed in the United States on May 11, 2026
J
Verified Purchase
JavaChild
Lowell, US
★★★★★ 5
Cools quite well, about 85% but works well for hot flashes
Being in perimenopause I tend to have hot flashes at the most inopportune times, especially in the middle of winter where I'm sleeping practically naked and everyone in the house is sleeping with hoodies and sweats and extra blankets. I just found out that one side is extremely cooler than the other and the first night I had it I washed it gently dried it in a very light, delicate setting on my dryer. In fact, I didn't let it dry all the way and let it hang up and the first three nights I slept with this blanket. I slept an entire 8 hours instead of the usual three because hot flashes like to do that to you. Wake you up at 2:00 in the morning or 5:00 in the morning when you have to get up for work in an hour. It's very light. It smells great. It's very soft and one side like I said is cooler than the other and you will feel so much better wearing this or sleeping with this rather. I'm
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Reviewed in the United States on May 29, 2026
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Verified Purchase
patti
Pawtucket, US
★★★★★ 5
Five stars!!⭐️ ⭐️⭐️⭐️⭐️
So comfortable and cooling, my son stays asleep at night because of this amazing comforter! Incredibly cooling and perfect weight we love it!
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Reviewed in the United States on May 10, 2026
A
Verified Purchase
Alina Choughale
Bozeman, US
★★★★★ 5
Keeps me cooler than before!!
Color: Light Gray, Size: Full / Queen (90"x90")
I have been going back and forth about buying the Rest comforter but it is so expensive and then I stumbled across this. I am very pleased, it is light and one side usually stays cool to the touch. It does warm up with body heat but usually I let it sit in front of the fan for few minutes and it’s cold again. It was made a huge difference and it good quality for what you pay.
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Reviewed in the United States on May 27, 2026

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