Ronstan Series 75 Core Block™ Single, 75mm Sheave, 1500kg MWL

Experience unparalleled performance and durability with the Ronstan Series 75 Core Block™ Single. Engineered as a true all-round solution, this block is meticulously designed for demanding sailing environments, offering exceptional reliability across the full working load range. Its innovative 2-stage bearing system ensures smooth operation under both dynamic and static loads, while robust construction guarantees a long service life. Upgrade your rigging with Ronstan's class-leading technology for competitive and cruising sailing today.

Key Benefits:

• Optimized 2-Stage Bearing System: Features high-compression strength Acetal ball bearings for minimum friction under moderate loads, transitioning to a sliding Acetal bearing on a polished stainless steel race for sustained low friction under heavy loads. An integrated thrust bearing prevents sheave-to-cheek friction for perfect line lead.
• Robust & Corrosion-Resistant Construction: Built with a U.V. stabilized Acetal sheave for longevity, high-quality Aluminium Alloy cheeks for maximum strength and minimal weight, and Grade 316 stainless steel fixings for superior corrosion resistance in marine environments.
• Versatile Universal Head: Offers full 3-axis articulation with a brass bearing washer for smooth 360° rotation. The head can be securely locked at 0° or 90° using a 2.5mm hex key, allowing for optimal line lead and easy customization.
• High Load Capacity: Boasts a Maximum Working Load (MWL) of 1,500 kg (3,300 lbs) and a Breaking Load (B.L.) of 3,000 kg (6,600 lbs), providing confidence in challenging conditions.
• Lightweight Design: Weighing only 354g (12.5oz), its material optimization and cut-away cheek design minimize weight without compromising strength, allowing for easy freshwater rinsing of salt and debris.
• Integrated Becket/Tie-Up Point: The central hub hole serves as a convenient becket take-off or tie-up point, enhancing the block's versatility.

Applications & Compatibility:

Ideal for mainsheet, halyard, spinnaker sheet, vang, and backstay applications on boats up to 14 meters (46 feet). Also suitable for various control line applications on larger yachts.