SKU: 40894070830

Ronstan 60mm Single Fiddle w/ Snap Shackle Head Core Block

Sale price$171.44 Regular price$190.49
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Description

Ronstan 60mm Single Fiddle w/ Snap Shackle Head Core BlockProduct Description Ronstan 60mm Single Fiddle w Snap Shackle Head Core Block Features Class leading performance and sleek, contemporary styling Excellent dynamic and high static load performance Less than half the friction of the nearest competitor Durable aluminum alloy cheek plates Central hub hole can be used as a becket take off or tie up point Versatile trunnion snap shackle Provides quick & simple attachment and removal 360 degree relation with

Product Description

Ronstan 60mm Single Fiddle w/ Snap Shackle Head Core Block

Features

  • Class leading performance and sleek, contemporary styling

  • Excellent dynamic and high static load performance

  • Less than half the friction of the nearest competitor

  • Durable aluminum alloy cheek plates

  • Central hub hole can be used as a becket take-off or tie-up point

  • Versatile trunnion snap shackle

  • Provides quick & simple attachment and removal

  • 360 degree relation with side-to-side articulation

  • Integrated becket through the hub of the lower sheave

    Sheave Ø - 2 3/8 + 1 3/16 in. (60 + 30 mm)

    Max. Rope Ø - 1/2 in. (12 mm)

    Max. Cable Ø - in. (mm)

    Pin Ø - 5/16 in. (8 mm)

    M.W.L. - 2200 lbs. (1000 kg)

    B. L. - 4410 lbs. (2000 kg)

    Weight - 14.2 oz. (405 g)

    Product Information

    Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.

    Universal Bearing -

    Dynamic and high static load performance

    The Ronstan Universal Bearing incorporates our proven 2-stage bearing system

    Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.

    Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.

    Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn’t perfect. Particularly important for cheek blocks.

    Alloy cheek plates

    Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimization and the cut-away design minimizes weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimizing rope wear.

    Applications

  • Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 12m (40ft).

  • Various control line applications on larger yachts.

  • Alloy sheave models are available for use with wire.

  • Ideal for creating simple vang and mainsheet systems up to 4:1 on boats to 12m (40ft)

    Materials

  • Sheave: U.V. stabilized Acetal or anodized aluminum (AW models)

  • Cheek plates: Aluminum alloy

  • Ball Bearings: High compression strength carbon black Acetal

  • Snap shackle: 15-5PH investment cast stainless steel
  • 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: 40894070830

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    4.8 ★★★★★
    Based on 18 reviews
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    Reviewed in the United States on March 7, 2026
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    Reviewed in the United States on April 10, 2026
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    Reviewed in the United States on May 26, 2026
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    Reviewed in the United States on October 10, 2025
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    Reviewed in the United States on February 24, 2026

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