Single-disc plain bearing blocks with disc diameters of 50mm, 60mm, or 80mm. Connection is via a fixed or movable clevis.
These blocks are used by many French mast manufacturers (Sparcraft, Z-Spar) and shipyards (Jeanneau, Bénetau and Dufour) for halyard deflection at the mast base or deck ring.
| Disc diameter | Fork width | Pin diameter | workload | Rope diameter | Weight |
| 50mm | 12mm | 6mm | 700kg | 4 - 12mm | 124g |
| 50mm | 14mm | 8mm | 700kg | 4 - 12mm | 130g |
| 60mm | 12mm | 6mm | 850kg | 6 - 14mm | 210g |
| 60mm | 14mm | 8mm | 850kg | 6 - 14mm | 270g |
| 80mm | 14mm | 8mm | 1430kg | 10 - 16mm | 424g |
Herstellerinformationen gemäß GPSR:
RUTGERSON MARIN ABMjölkekilsgatan 21
44266 Marstrand
Mail: info@rutgerson.se