518
4.50 (114 mm) Deck Sheave
Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of hardcoat-anodized, PTFE-impregnated 6061-T6 aluminum, sheaves feature Torlon® rollers to carry high radial loads and carbon-black Delrin® balls to support sideloads and provide UV protection.
Delrin® is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates
Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
Technical specifications · Harken 518
| Sheave diameter | 114 mm |
|---|---|
| Width | 25 mm |
| Weight | 454 g |
| Centre pin diameter | 19.1 mm |
| Fasteners | 10 mm |
| Maximum line diameter | 18 mm |
| Maximum working load | 3401 kg |
| Breaking load | 6803 kg |