SERIES 75 CORE BLOCK STAND UP
Series 75 Core Blocks
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Series 75 Core Blocks

3" Diameter Sheave
By: Ronstan

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Overview
Ronstan's Core Blocks have a 2-stage bearing system which provides excellent performance across the full working load range. Under light and moderate loads, ball bearings minimize friction and also act as side-load/thrust bearings when the lead isn't fair. At loads that would deform the ball bearings, a solid bushing takes over, maintaining low friction performance. Use these blocks for sheets, halyards and control line applications for either cruising and racing.
• Versatile - easily handles high dynamic loads, as well as heavy static loads
• Shackle head lockable at 0 or 90 degrees
• Acetal or aluminium (grooved for wire) sheave options
• Aluminum alloy cheek plates shaped for maximum strength, light weight, ease of freshwater rinsing, minimal chafe
• Beckets have removable pins to allow fitting of pre-spliced lines
• On non-becket models, the central hub hole can be used as a becket take-off or tie-up point
 
PRODUCT DETAILS TABLE WITH OPTIONS AND PRICING
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Sku#Item IDRonstan#AvailabilityDescriptionUOMYour PriceQTY
371178RON RF74100 RF74100Loading...Series 75 Core Blocks, Single W/Acetal SheaveLoading...
371180RON RF74110 RF74110Loading...Series 75 Core Blocks, Single w⁄Becket W/Acetal SheaveLoading...
371181RON RF74108 RF74108Loading...Series 75 Core Blocks, Halyard, 8 mm Threaded Pin W/Acetal SheaveLoading...
371188RON RF74108A RF74108ALoading...Series 75 Core Blocks, Mast Base, 8mm Clevis Pin W/Acetal SheaveLoading...
371182RON RF74151 RF74151Loading...Series 75 Core Blocks, Cheek⁄Foot W/Acetal SheaveLoading...
371183RON RF74202 RF74202Loading...Series 75 Core Blocks, Double, Non-Swivel Head W/Acetal SheaveLoading...
371184RON RF74140 RF74140Loading...Series 75 Core Blocks, Stand Up, Swivel W/Acetal SheaveLoading...
371179RON RF74100AW RF74100AWLoading...Series 75 Core Blocks, Single W/Aluminum SheaveLoading...
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