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Big Boat sheaves are engineered for special applications and serve as replacement components for Big Boat blocks. These sheaves are constructed from hardcoat-anodized, Ptfe-impregnated 6061-T6 aluminum to ensure durability and performance. The design incorporates Torlon rollers specifically to handle high radial loads effectively. Additionally, carbon-black Delrin balls are used to support sideloads and provide essential UV protection.
Material Construction: Hardcoat-anodized, Ptfe-impregnated 6061-T6 aluminum.
Radial Load Capacity: Torlon rollers are integrated to carry high radial loads.
Sideload Support: Carbon-black Delrin balls support sideloads and provide UV protection.
Specifications
• Brand: Harken
• Reference: 519
• Sheave Ø: 140 mm
• Width: 29 mm
• Weight: 765 g
• Maximum line Ø: 22 mm
• Fasteners: 10 mm
• Fastener circle: 41 mm
• Maximum working load: 4127 kg
• Breaking load: 8254 kg
• Center pin Ø: 22.28 mm






