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Binks is your stop for all boating and watersport needs
Binks is your stop for all boating and watersport needs

Ronstan S40 RTA OrbitBlock,Cheek,Clockwise Rotation (RF46151)

by Ronstan
Original price $88.21 - Original price $88.21
Original price
$88.21 - $88.21
Current price $88.21
SKU RF46151

Awesome ratchet block holding power
Quite simply, Ronstan Ratchet Orbit Blocks ’?½ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. Its holding power is up to 14:1, double that of competitors.

The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designs have only 8 faces with an angled resistance to line movement. The Generation 2 design has straight resistance faces which both distribute the load and minimize rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.


  • Auto and Manual models to suit every application or preference
  • Up to 14:1 holding power - highest available!
  • Easily fitted and securely retained Dyneema© link head
  • Smooth easing of sheets
  • Clockwise rotation
  • Fully automatic, load sensing ratchet engagement
  • Recessed underside to suit curved mounting surface
  • Low mounting points for maximum strength


  • Dinghy mainsheet systems
  • Mainsheet fine tune systems on sportsboats & small keel boats
  • Mainsheet systems on sportsboats using RF7 mainsheet swivel cleat unit
  • Spinnaker and job sheets on dinghies - especially modern asymmetric classes
  • Control line applications on larger yachts

Sheave ? 40 mm
Max. Rope ? 9 mm
Pin ? - mm
M.W.L. 175 kg
B. L. 500 kg
Weight 36 g