The Ronstan RF35284 Series 30 Ball Bearing Orbit Block -
Linked boasts the highest strength-to-weight ratio
available. This is achieved through all-composite reinforced
polymer materials and multiple attachment options. Their precision
design provides the optimum number of ball bearings for minimum
friction while weight reduction is achieved through the use of
fibre-reinforced composites in the block head, cleat arms and
beckets.
Lightweight, the lowest weight possible in orbit
blocks
Multi-sheave blocks have only single intermediate cheeks and an
ultra-light and efficient head arrangement.
High compression grade Acetal ball bearings and a secondary
full-contact bearing
The sheave and bearing system is supported by a
fibre-reinforced load frame, computer modelled and optimised using
advanced stress analysis methods
The Dyneema Link, used in multi-sheave blocks, is produced from
high spec SK75 fibre, which is 10 times stronger and lighter than
steel, and provides the final connection from the block to the load
point
Simple, versatile and secure attachment
The single block is easily lashed to an attachment point, and
can also accept Dyneema Links and shackles for a variety of
efficient attachment alternatives
Low profile and compact
Ultra low profile thru-sheave becket
Low friction 2-stage ball bearing system provides consistent
performance over the full working load range
Strong, lightweight fibre-reinforced cleat arms optimised at
the required cleating angle
Race-proven, carbon-fibre reinforced Ronstan C-Cleats give
secure rope holding with low entry and exit efforts, and are fitted
with fairleads for fast action from any angle
Applications:
Mainsheet systems and spinnaker sheets on dinghies to 5m
(16ft)
Halyard, vang and backstay applications on boats to 5m
(16ft)
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