These blocks have been specifically designed and optimised for use on racing sailboats and the conditions encountered in this unique application. They should not be assumed suitable for other non-marine or industrial applications.
|PVP sin IVA|
|Rodamientos de bolas|
|RF45110||PXC||Polea simple, grillete giratorio, arraigo||40||8||325*1||650||44||30.39€|
|RF45111||PXB||Polea simple, arraigo||40||8||325*1||700||36||30.39€|
|RF45131||PXC||Polea simple, mordaza ajustable, arraigo||40||8||325*1||700||98|
|RF45211||PXF||Polea doble, arraigo||40||8||500*2||1000||72||51.00€|
|RF45311||PXH||Polea triple, arraigo||40||8||650*3||1350||105|
|RF45151||PXD||Polea plana de re-envío||40||8||325||700||32||25.51€|
|RF45501||PXI||Polea violín*||40 + 22||8||325||700||47|
|RF45511||PXJ||Polea violín,*, arraigo||40 + 22||8||325||700||48|
|RF45521||PXK||Polea violín*, mordaza ajustable||40 + 22||8||325||700||108||83.27€|
|RF45531||PXL||Polea violín*, arraigo, mordaza ajustable||40 + 22||8||325||700||109||86.98€|
|RF4||GWH||Base giratoria con pasador. Apta para poleas de la Serie 40 & 55 provistos de gaza de Dyneema®. Pasador de 4.8 mm.||–||–||250||500||30|
|RF2454||PXU||Base de fijación para poleas||–||–||325||700||11|
|* La roldana pequeña no dispone de un rodamiento de bolas. La roldana grande dispone de un rodamiento de bolas de dos etapas.|
Kilogram for kilogram of working load, BB and RT Orbit Blocks™ are the world’s lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimises the mass of the inactive return race and hub.
Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible.
Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block.
Highest working load in its class
The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximises load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.
The floating sheave and bearing system is supported by a fibre-reinforced load frame. The design was computer modelled to be stress optimised.
Becket fiddle blocks use a Dyneema Link attachment for the sheet termination and are suitable for both spliced and un-spliced lines. If you need additional purchase, a becket take-off can be simply added to any fiddle block version just by adding a Dyneema Link
High performance cleating
Both Ronstan BB and RT Orbit Blocks™ feature strong, lightweight fibre-reinforced cleat arms. They have a wide range of adjustment and calibration marks, perfect for selecting your preferred cleating angle settings. The race-proven carbon-fibre reinforced Ronstan C-Cleat give secure rope holding with low entry and exit efforts, and are fitted with fairleads for fast action from any angle.
- Mainsheet systems and spinnaker sheets on dinghies to 5m (16ft)
- Spinnaker sheets on dinghies, sportsboats and small keel boats to 5m (16ft)
- Halyard, vang and backstay applications on boats to 8m (26ft)
- Control line applications on larger yachts
- Rope/Link – UV stabilised, multi-strand impregnated SK75 Dyneema®