Ronstan S55 BB Orbit Block, Upright Lead
$107.99
Ronstan RF55171 Series 55 Ball Bearing Upright Lead Orbit Block
- Description
- Specifications
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Description
Upright lead block. Requires 2x 6mm (1/4″) fasteners.
Series 55 Ball Bearing Orbit Blocks feature Ronstan’s 2-stage bearing system and are engineered to achieve the highest possible strength-to-weight ratio. They are lightweight and high performance 55mm blocks commonly used for mainsheets and spinnaker sheets on dinghies, sportsboats, and small keelboats up to 9m (30′).
Features:
- Ultra lightweight
- Low friction 2-stage Orbital ball bearing system
- Highest working load in its class
- Low profile and compact
- High performance cleating
- Ball bearings – High compression strength carbon black Acetal
- Stage 2 bearing – Carbon fibre reinforced, PTFE impregnated Nylon
- Frame/Cheeks – Toughened, glass fibre reinforced Nylon
- Sheave – Carbon fibre reinforced, PTFE impregnated Nylon
- Requires 2x 6mm (1/4″) Fasteners
| Type of Block | Upright Lead |
| B.L. | 1000kg |
| M.W.L. | 500kg |
| Max. Rope diameter | 10mm |
| Weight | 91g |
* Load on becket not to exceed 50% of block load. Suitable for 2:1 system at rated block load.
