Series 55 Orbit Block™ Fiddle Becket Swivel - Part # RF55510

Ronstan Series 55 Orbit Block - Fiddle Becket Swivel

Series 55 Ratchet Orbit Block™ Cheek Clockwise Rotation - Part # RF56151

Ronstan Series 55 Ratchet Orbit Block - Cheek Clockwise Rotation

Ronstan Series 55 Orbit Block - Quad Becket Swivel


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Series 55 Orbit Block - Quad, Becket, Swivel


» Ultra Lightweight
» Low friction 2-stage Orbital ball bearing system
» Highest working load in its class
» Low profile and compact
» High performance cleating
» Swivel shackle head for unlimited block rotation
» Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points
» Ultra low profile integrated beckets

» Ball bearings - High compression strength carbon black Acetal
» Stage 2 bearing - Carbon fiber reinforced, PTFE impregnated Nylon
» Frame/Cheeks - Toughened, glass fiber reinforced Nylon
» Rope Link: UV stabilized, multi-strand impregmented SK75 Dyneema®
» Head fitting: grade 316 stainless steel
» Ball Bearings: high compression strength carbon black Acetal


» Mainsheet systems and spinnaker sheets on dinghies, catamarans, sportsboats and small keel boats to 9m (30ft)
» RF55410 when paired with a RF56330B and a RF35101 lashed to the becket produces a powerful 8:1 mainsheet system for use on catamarans to 5.5m (18ft).This can be increased to 9:1 by replacing the RF35101 with a RF35202
» Halyard, Vang and Backstay application on boats to 8m (26ft)
» Control line applications on larger yachts

Part # RF55410

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Sheave Ø 55 mm__ Max. Rope Ø 10 mm__ Max. Cable Ø mm__ Pin Ø 5 mm__ M.W.L. 750* kg__ B. L. 1500 kg__ Weight 316 g