Ronstan RF25109HL Series 20 Ball Bearing High Load Lashing Orbit Block Single Sheave with Becket

The Ronstan RF25109HL is a single sheave high load lashing block with becket hub, engineered specifically for modern high-performance and foiling sailboats that experience significantly higher loads on their control systems. The 20mm HHL Lashing Block provides an optimal solution for high-load applications in sailing, utilizing advanced ball bearing technology that offers smooth operation under heavy loads while minimizing friction and maximizing performance.

Performance Specifications:

• Maximum line size of 6mm with 300kg (661 lbs) Maximum Working Load and 900kg (1,984 lbs) Breaking Load
• Ultralight construction weighing only 9 grams
• Accommodates lashing up to 4mm (5/32") diameter and includes 750mm (30") x 2mm (3/32") diameter Dyneema® single braid lashing line
• Integrated hub doubles as a becket take-off point

Construction Materials:

• Sheave: High compression strength carbon black Acetal
• Frame/Cheeks: Toughened, glass fibre reinforced Nylon
• Load straps and ball bearings: Grade 316 stainless steel; HHL sheave and bearing race: Grade 2205 stainless steel

The Ronstan Series 20 features lightweight yet robust construction, ensuring reliability and longevity even in the toughest marine environments while reducing weight on your sailboat for a more responsive sailing experience. Ideal for control lines, leech lines, cunninghams, cascading vangs, and kite bridles in higher load applications.