SKU: 84680732705

Ronstan Series 40 Ball Bearing Block - Fiddle

Sale price$54.19 Regular price$60.21
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

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Description

Ronstan Series 40 Ball Bearing Block - FiddleSeries 40 Ball Bearing Block Fiddle 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 Low friction, 2 stage ball bearing system High static and dynamic load capacity Lightweight Cheek cut outs for easy bearing maintenance Sheaves running on Acetal or Torlon ball bearings provide high performance low friction. The 2 stage

Series 40 Ball Bearing Block - Fiddle

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

  • Low friction, 2-stage ball bearing system

  • High static and dynamic load capacity

  • Lightweight

  • Cheek cut-outs for easy bearing maintenance

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

Applications:


  • Mainsheet

  • Halyard

  • Vang

  • Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)

  • Typically used in direct 4:1 purchase systems such as mainsheets and boom vangs

  • On larger boats they are used for fine-tune mainsheet tackles, outhauls, cunninghams, checkstays, genoa lead pullers and traveller controls.

Materials:


  • Acetal ball bearings

  • UV stabilized Acetal sheave

  • Grade 316 stainless steel load strap and head fitting

  • Impact and UV resistant, fiber reinforced Nylon cheeks

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: 84680732705

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4.0 ★★★★★
Based on 9 reviews
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M
Verified Purchase
Mark Kosturik
Whiting, US
★★★★★ 5
Good boot sock
Size: Large, Color: (001) Black / Black / White
Used these for over a year now. They cover your calf and really don’t move from that spot. Very comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026
T
Verified Purchase
T-Rex-in-Charge
Natrona Heights, US
★★★★★ 5
Husband won’t wear any other kind
Size: Large, Color: (499) Federal Tan / Federal Tan / Coyote
Husband loves these socks for work. Not overly thick. Breathable. Stay in place.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 22, 2026
T
Verified Purchase
The Sarmajor
Battle Creek, US
★★★★★ 4
Okay But Not Worth The $$$
Size: Large, Color: (390) Marine Od Green / Marine Od Green / Baroque Green
Standard athletic sock. Cheaper ones are available through soooo many sources. UA seems to mean more expensive.
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Reviewed in the United States on January 26, 2026
J
Verified Purchase
JZ
Omaha, US
★★★★★ 5
Soft and perfect fit
Size: Medium, Color: (499) Federal Tan / Federal Tan / Coyote
Perfect fit, comfortable
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Reviewed in the United States on April 9, 2026
B
Verified Purchase
Brian
Fort Morgan, US
★★★★★ 5
Comfortable and Warm!
Size: Large, Color: (390) Marine Od Green / Marine Od Green / Baroque Green
Not as well padded on the bottom as military issue but still a great sock!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2025

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