Ronstan RF55531 Series 55 Ball Bearing Orbit Block - Fiddle & Becket Cleat Link Head
Ronstan RF55531 Series 55 Ball Bearing Orbit Block - Fiddle & Becket Cleat Link Head
Ronstan RF55531 Series 55 Ball Bearing Orbit Block - Fiddle & Becket Cleat Link Head
Deliver to:
New South Wales 2000,
AU
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Highest working load in its class
Kilogram for kilogram of working load, the Ronstan RF55531 Series 55 Ball Bearing Orbit Block - Fiddle & Becket Cleat Link Head is among Ronstan's BB and RT Orbit Blocks that 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.
Ronstan RF55531 Series 55 Ball Bearing Orbit Block - Fiddle & Becket Cleat Link Head Features:
- Multi-sheave blocks have only single intermediate cheeks and an
ultra-light and efficient head arrangement.
- 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
- The Dyneema Link is produced from FSE Robline SK75 fibre, which
is 10 times stronger and lighter than steel, and provides the final
connection from the block to the load point
- 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
- Becket fiddle blocks use a Dyneema Link attachment for the
sheet termination and are suitable for both spliced and un-spliced
lines
- Applications:
- Mainsheet systems on dinghies, sportsboats and small keelboats
to 9m (30ft)
- Spinnaker sheets on dinghies, sportsboats and small keel boats
to 9m (30ft)
- Halyard, Vang and Backstay application on boats to 8m
(26ft)
- Control line applications on larger yachts
- Mainsheet systems on dinghies, sportsboats and small keelboats
to 9m (30ft)
Ronstan RF55531 Series 55 Ball Bearing Orbit Block - Fiddle & Becket Cleat Link Head Specifications:
- Sheave diameter: 55 + 35 mm
- Max. Rope diameter: 10 mm
- M.W.L.: 500 kg
- B. L.: 1000 kg
- Weight: 223 g
- Materials:
- Ball Bearings - High compression stregnth carbon black
Acetal
- Stage 2 bearing - Carbon fibre reinforced, PTFE impregnated
Nylon
- Frame/Cheeks - Toughened, glass fibre reinforced Nylon
- Rope/Link - UV stabilised, multi-strand impregnated SK75
Dyneema
- Ball Bearings - High compression stregnth carbon black
Acetal
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