2022 Ronstan Marine Catalogue - VIEW CATALOGUE

Orbit Block™


Series 20 Ball Bearing



  • Suits up to 4mm (5/32”) lashing
  • Supplied with 750mm (30”) x 2mm (3/32”) diameter,
  • Dyneema® single braid lashing line

$ 86.40

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Click to view Lashing Instructions
* Block must be lashed through hub. The supplied lashing line must have three passes through head and hub to achieve rated load. MWL & BL are dependent on the strength of lashing. Knots, splices, stitching will generally have a lower BL than the line itself.

Dyneema® is a registered trademark of DSM IP Assets B.V.
Sheave Ř3/4 in.
Max. Rope Ř1/4 in.
Max. Cable Ř in
Pin Ř in.
M.W.L.660 lb.
B. L.1980 lb.
Weight0.5 oz.
  • Leech / control lines
  • Cunninghams
  • Ideal for higher load applications
  • Sheave: high compression strength carbon black Acetal
  • Frame:/Cheeks: Toughened, glass fibre reinforced Nylon
  • Load straps and ball bearings: Grade 316 stainless steel
  • HHL sheave and bearing race: Grade 2205 stainless steel
  • Ball Bearings: Grade 304 stainless steel
  • Frame/Cheeks: Toughened, glass fibre