520
7.00 (178 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 520
| Sheave diameter | 178 mm |
|---|---|
| Width | 29 mm |
| Weight | 1280 g |
| Centre pin diameter | 38 mm |
| Fasteners | 12 mm |
| Maximum line diameter | 22 mm |
| Maximum working load | 6349 kg |
| Breaking load | 12698 kg |