Imperial Metric
Sheave Dia. 3" 75 mm
Max. Rope Dia. 9/16" 14 mm
Maximun Working Load 3300 lb 1500 kg
Breaking Load 6600 lb 3000 kg
Weight 17.9 oz 506 g

Product Description

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.

• Class leading performance and sleek, contemporary styling.
• Excellent dynamic and high static load performance.
• Less than half the friction of the nearest competitor.
• Durable aluminium alloy cheek plates.
• Central hub hole can be used as a becket take-off or tie-up point.
• Removable threaded pin at shackle head.
• Central hub hole can be used as a becket take-off point.
• Sheave: U.V. stabilised acetal or anodised aluminium (AW models).
• Cheek plates: Aluminium alloy.
• Ball Bearings: High compression strength carbon black acetal.
• Shackle, post & hub: Grade 316 stainless steel.

Ideal for use on mainsheet, spinnaker sheet, vang, halyard and backstay applications on boats up to 14 m (46 ft), general applications on larger yachts, alloy sheave models are available for use with wire.

Part Number: RF74151

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Ronstan Series 75 Core Block, Double, Non-Swivel Head
Original Price: $ 247.00
Price: $ 209.95

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