RONSTAN Series 55 Ratchet Orbit Block RF56120

Single, Cleat, Swivel Head, auto*

FEATURES

  • Up to 20:1 holding power
  • Smooth easing of sheets
  • High performance cleating

123.88  VAT not included

These blocks have been specifically designed and optimised for use on racing sailboats and the conditions encountered in this unique application. They should not be assumed suitable for other non-marine or industrial applications. 

Nº REF.
Multiuso
KEY DESCRIPTION DIAM. ROLDANA
mm
MAX. ROPE
mm
CMT
kg
Breaking load
kg
Weight
g
RF56100 GEX Polea winch, mando manual o automático, serie Orbit 55 55 10 250 650 82
RF56110 GEY Polea winch con arraigo, mando manual o automático, serie Orbit 56 55 10 250 650 86
RF56120 GEZ Polea automática con mordaza, serie Orbit 55 55 10 250 650 204
RF56130 GEH Polea winch automática, con arraigo + mordaza , Orbit 55 55 10 250 650 209
RF56330B GEA Polea winch automática, triple + arraigo + mordaza, Orbit 55 55 10 750 1500 392
RF56510 GEI Polea winch violín automática con arraigo, serie Orbit 55 55 + 35 10 250 750 108
RF56530 GEJ Polea winch violín automática con arraigo + mordaza serie Orbit 56 55 + 35 10 250 750 235

Automatic ratchet block

Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes*. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it’s released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer – you really can’t go wrong.

* Selected Series 55 models.

Awesome ratchet block holding power

Quite simply, Ronstan Ratchet Orbit Blocks™ 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 20:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.

Automatic ratchet block

Weight 1 kg
Dimensions 15 × 6 × 8 cm
Brand

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