Harken 114mm 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.
| Part Number | HKN-518 |
| Sheave Ø (mm) | 114 mm |
| Sheave Ø (in) | 4 1/2 in |
| Width (mm) | 25 mm |
| Width (in) | 1 in |
| Weight (g) | 454 g |
| Weight (oz) | 16 oz |
| Maximum line Ø (mm) | 18 mm |
| Maximum line Ø (in) | 3/4 in |
| Fasteners (mm) | 10 mm |
| Fasteners (in) | 3/8 in |
| Fastener circle (mm) | 35 mm |
| Fastener circle (in) | 1 3/8 in |
| Maximum working load (kg) | 3401 kg |
| Maximum working load (lb) | 7500 lb |
| Breaking load (kg) | 6803 kg |
| Breaking load (lb) | 15000 lb |
| Center pin Ø (mm) | 19.1 mm |
| Center pin Ø (in) | 3/4 in |
