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Ronstan Series 100 Orbit Double Block – RF109200

Original price was: $1,768.03.Current price is: $1,699.95. incl GST

SKU: RF109200 Categories: , , , , ,


Ronstan Series 100 Orbit Double Block – RF109200:


  • The highest strength-to-weight ratio.
  • Minimal friction loss, especially when working at high loads.
  • Captive ball bearings for side thrust loads.
  • Totally reliable and trouble free performance.
  • Simplicity of design and construction to facilitate maintenance and servicing.
  • Elegant, functional styling and finish.
  • Lockable swivelling head post.
  • High strength forged shackle.

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.

Head posts of swivel blocks can be locked at 0 or 90 degrees.


Fully machined Alloy cheek plates. Alloy sheaves with captive ball races. Torlon® needle rollers. Carbon black Acetal ball bearings. Forged grade 17-4PH stainless steel shackles. Grade 316 stainless steel head post.


Product Specifications
B.L. (kg) 8500
M.W.L. (kg) 4250
Max. Rope diameter (mm) 14
Weight (g) 1030
Pin Ø (mm) 10

Additional information

Weight 1.2 kg
Dimensions 20 × 10 × 10 cm