Series 45 Core Blocks
New Product1

Series 45 Core Blocks

Class Leading Performance and Sleek, Contemporary Styling
By: Ronstan

Availability: Make a selection

Sku# Make a selection
Item ID Make a selection
Mfg# Make a selection
Please choose product option(s).
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 optimisation and the cut-away design minimises 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, minimising rope wear.
• Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 10m (33ft).
• Various control line applications on larger yachts.
• Alloy sheave models are available for use with wire.
• Sheave: U.V. stabilised Acetal
• Cheek body: Aluminium Alloy
• Ball Bearings: High compression strength carbon black Acetal
• Shackle, head post & hub: Grade 316 stainless steel
Click on See detailed table of all productsto see specifications of product options.
Add To Cart
Sku#Item IDRonstan#AvailabilityDescriptionUOMYour PriceQTY
431205RON RF44100 RF44100Loading...Series 45 Core Blocks, 1-3/4" Sheave, 1/2" Max Rope SizeLoading...
431206RON RF44140 RF44140Loading...Series 45 Core Blocks, 1-3/4" Sheave, 1/2" Max Rope SizeLoading...
431207RON RF44188 RF44188Loading...Series 45 Core Blocks, 1-3/4" Sheave, 1/2" Max Rope SizeLoading...
Add To Cart

© Copyright Fisheries Supply Company 2013. All rights reserved.