Ronstan RF55510 Series 55 Orbit Block

Ronstan RF55510 Series 55 Orbit Block, Fiddle, Becket and swivel shackle head. The orbital ball bearing arrangement gives the largest possible bearing race diameter. This maximises load performance. The Ronstan two-stage bearing system feature high compression grade Acetal ball bearings and a secondary full contact bearing. This gives minimum friction across the full working load range. Ultra lightweight and low friction two-stage orbital ball bearing system. Highest working load in its class. Low profile and compact. High performance cleating.

Suitable for mainsheet systems on dinghies, sports boats and small keel boats up to 9m. Halyard, Vang and backstay applications on boats up to 8m and control line applications on larger yachts.

High compression strength carbon black Acetal ball bearings. Carbon fibre reinforced Nylon two-stage bearing system. Toughened glass fibre reinforced Nylon frame and cheeks. U.V. stabilised, multi-strand Dyneema® Rope Link.