SKU: 26397698041

Ronstan Series 40 Ball Bearing Orbit Block - Cheek [RF45151]

Sale price$30.34 Regular price$33.71
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

Ronstan Series 40 Ball Bearing Orbit Block - Cheek [RF45151]Series 40 Ball Bearing Orbit Block Cheek Features: Ultra Lightweight Low friction 2 stage Orbital ball bearing system Highest working load in its class Low profile and compact High performance cleating Base suits curved mounting surface Low mounting points for maximum strength 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

Series 40 Ball Bearing Orbit Block - Cheek

Features:

  • Ultra Lightweight
  • Low friction 2-stage Orbital ball bearing system
  • Highest working load in its class
  • Low profile and compact
  • High performance cleating
  • Base suits curved mounting surface
  • Low mounting points for maximum strength

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.

Recommended fasteners - 3 x 4mm (5/32") countersunk head screws

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: 26397698041

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Jamie M Franklin
Houston, US
★★★★★ 5
I'm impressed
Color: Black, Size: 2.7 Fl Oz (Pack of 1)
I'm very impressed with how well this stuff works. My nose gets pretty bad and this stuff clears it all out in one shot.
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Reviewed in the United States on March 6, 2026
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Ali aroche ayala
New York, US
★★★★★ 4
Fresco
Color: Black, Size: 2.7 Fl Oz (Pack of 1)
Es muy bueno pero deja grasosa la piel
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Reviewed in the United States on February 9, 2026
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ztoothfairie
West Palm Beach, US
★★★★★ 5
Immediate sloughing of dead skin
I love this exfoliant and I in fact have a few of them. It does smell like rice water, and immediately upon rubbing it on your face, you start getting little rolls of dead skin sloughing off. It doesn't burn or sting, so I'm really not sure how it does it, but my skin feels amazing after- so smooth and soft! I'm obsessed!
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Reviewed in the United States on April 5, 2026
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melissa anderson
Port Orchard, US
★★★★★ 1
Face cleaner
Color: Black, Size: 2.7 Fl Oz (Pack of 1)
Doesn't work
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Reviewed in the United States on May 17, 2026
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Verified Purchase
DArleen Hamblen
Grantham, US
★★★★★ 5
Amazing product
Size: 2.12 Ounce (Pack of 1)
This cream is amazing! I was not expecting the results I got. My face feels soft, plump, and the redness in my cheeks is disappearing. My skin looks youthful and I’m 57. Very hydrated definitely don’t hesitate to purchase.
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Reviewed in the United States on May 22, 2026

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