SKU: 9154406205

Ronstan Series 40 Ball Bearing Block - Single - Universal Head [RF40100]

Sale price$29.80 Regular price$33.11
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

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Description

Ronstan Series 40 Ball Bearing Block - Single - Universal Head [RF40100]Series 40 Ball Bearing Block Single Universal Head Sheaves running on Acetal or Torlon ball bearings provide high performance & low friction. The 2 stage ball bearing system provides consistent performance over the full load range. Captive Lock universal head can be fixed in either of two planes, or free to swivel as required. Features: Low friction Acetal or Torlon bearing system Lightweight Cheek cut outs for easy bearing maintenance Captive Lock

Series 40 Ball Bearing Block - Single - Universal Head

Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required.

Features:

  • Low friction Acetal or Torlon® bearing system
  • Lightweight
  • Cheek cut-outs for easy bearing maintenance
  • Captive Lock™ universal head
  • Slotted pin shackle eliminates fouled lines


Applications:
  • Mainsheet
  • Halyard
  • Vang
  • Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')


Materials:
  • U.V. Stabilized Acetal sheaves
  • Acetal ball bearings
  • Impact and U.V. resistant, fiber reinforced Nylon cheeks
  • Grade 316 stainless steel load strap and head fitting


Specifications:
Sheave Ø: 40mm(1-9/16")
Max. Rope Ø: 10mm(7/16")
Pin Ø: 5mm(3/16")
M.W.L.: 350kg(770lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 70g(2.5oz)
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: 9154406205

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4.9 ★★★★★
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KREY
Lowell, US
★★★★★ 5
Easy install, wide and sturdy
Size: 10"D x 15.7"W, Color: Brown, Size: 10"D x 15.7"W, Color: Brown
I put these shelves in a strange little cubby that was created in my kitchen by removing the sad excuse for a pantry that was once there. Super easy to hang, I’ve only hung two here and have other plans for the 3rd one. Good purchase for sure. Very sturdy and look expensive, without the high cost.
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Reviewed in the United States on December 20, 2025
T
Verified Purchase
Tyra Church
Waukegan, US
★★★★★ 4
Great shelves!
Size: 12"D x 35.4"W, Color: Black
These were perfect for what I needed & easy to install with included hardware; looks great and looks like quality item. I like that they will hold 20 lbs so I can change what I place on them with no worries.
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Reviewed in the United States on November 10, 2025
S
Verified Purchase
Stephanie L Trott
Houston, US
★★★★★ 5
Easy installation
Size: 11.6"D x 15.7"W, Color: Black
Nice and sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
K
Verified Purchase
kittybee
Dallas, US
★★★★★ 5
Sleek and attractive
Size: 12"D x 23.6"W, Color: Black, Size: 12"D x 23.6"W, Color: Black
While these didn't come in the color I was looking for, the size and price point were just what I was looking for. Installing them didn't take too long and was simple enough, but the end result did seem a little more wobbly than expected. I used them to display mine and my boyfriend's boots, and they held up fine, but I think 22 lbs per shelf would be pushing it. I was able to easily cover the shelves with wood grain look contact paper and easily trim the excess off with an Exacto knife to get the look I wanted. I'm happy with how it turned out.
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Reviewed in the United States on May 2, 2026
O
Verified Purchase
Old School
Pawtucket, US
★★★★★ 5
Good product.
Size: 11.6"D x 15.7"W, Color: Brown
Easy to install. Looks great. Exactly what I expected.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026

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