Ronstan Series 60 Single Halyard Orbit BlockThe highest strength-to-weight ratio
Orbit blocks™ are a no-compromise product range developed to meet the demands and expectation 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 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.
Halyard blocks are used in applications with a fixed line entry-angle to keep lines close to the deck as they lead aft to organisers and winches. Halyard block has a removable pin for attachment to deck padeyes or mast collar.
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.
Sheave Ø: 2 3/8 in. (60mm)
Max. Rope Ø: 1/2 in. (12mm)
Max. Cable Ø: - in (mm)
Pin Ø: 1/2 in. (12mm)
M.W.L.: 3970 lb. (1800 kg)
B. L.: 8820 lb. (4000 kg)
Weight: 5.6 oz. (160 g)
Primary mainsheet, halyard and spinnaker systems on boats to 12m (40ft)
Secondary mainsheet, vang systems on boats to 14m (46ft)
Standard and running backstay systems on boats to 10m (33ft)
General control line and lead block applications on larger yachts
Fully machined Alloy cheek plates
Alloy sheaves with captive ball races
Torlon® needle rollers
Carbon black Acetal ball bearings