693
5.00 (127 mm) Narrow Hi-Load Halyard Sheave
Narrow high-load sheaves in mastheads improve sail handling, speed sail changes, and allow the use of smaller, lighter halyard winches. Sheaves combine sideload-carrying balls with a PTFE composite bushing for radial loads.
Technical specifications · Harken 693
| Sheave diameter | 127 mm |
|---|---|
| Width | 19 mm |
| Weight | 340 g |
| Centre pin diameter | 19.1 mm |
| Line diameter | 12 mm |
| Maximum wire diameter | 8 mm |
| Maximum working load | 5443 kg |
| Breaking load | 16828 kg |
The stated breaking load is based on a solid 304 stainless steel shaft.