2022 Ronstan Marine Catalogue - VIEW CATALOGUE

Orbit Blocks™


Series 200



  • The highest strength-to-weight ratio
  • Minimal friction loss, especially when working at high loads
  • Totally reliable and trouble free performance
  • Simplicity of design and construction to facilitate maintenance and servicing
  • Elegant, functional styling and finish
  • Central hole can be used as a becket take-off/dead end in a 3:1 purchase system

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Orbit Blocks™ are a no-compromise product range developed to meet the demands and expectations of the very dedicated and increasingly professional racing sailor. Side cheeks incorporating head structure and hub are precision machined as a single part from solid alloy, leaving material only where it contributes to the load carrying capacity of the block and eliminating the need for additional fasteners. The Orbit sheave has captive acetal or Torlon® ball bearings for side thrust loads, eliminating the need for side retainer plates. This reduces weight and allows for a wider bearing surface that can accommodate longer Torlon® needles – achieving a substantially higher strength-to-weight ratio.

For comprehensive installation instructions see: Lashing Block Installation Instructions

Sheave Ø200 mm
Max. Rope Ø28 mm
Max. Cable Ø mm
Pin Ø mm
M.W.L.15000 kg
B. L.40000 kg
Weight3430 g
  • Mainsheet and genoa sheet systems on boats larger than 34m (111ft)
  • spinnaker systems and halyards on boats larger than 33m (108ft)
  • Running backstay systems on boats larger than 34m (111ft)
  • Fully machined Alloy cheek plates
  • Alloy sheaves
  • Torlon® needle rollers
  • Torlon® ball bearings