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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 BB Orbit Block,Single,Bkt,Cleat,SwivelHead (RF45130)

by Ronstan
Original price $140.19 - Original price $140.19
Original price
$140.19 - $140.19
Current price $140.19
SKU RF45130

Ball Bearing Orbit Blocks boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials.
Their precision design provides the optimum number of ball bearings in loaded areas and eliminates them in inactive areas. Ineffective mass is reduced even further through fibre-reinforced composites in the block head, cleat arm and beckets.


  • Ultra Lightweight
  • Low friction 2-stage Orbital ball bearing system
  • Highest working load in its class
  • Low profile and compact
  • High performance cleating

Sheave ? 40 mm
Max. Rope ? 9 mm
Max. Cable ? - mm
Pin ? - mm
M.W.L. 325 kg
B. L. 700 kg
Weight 105 g

Total block load. Becket MWL 125kg (275lb), BL 250kg (550lb). Suitable for 3:1 system at rated block load.


  • Mainsheet systems on spinnaker sheet on dinghies to 5m (16ft)
  • Spinnaker sheets on dinghies, sportsboats and small keel boats to 5m (16ft)
  • Halyard, vang and backstay applications on boats to 8m (26ft)
  • Control line applications on larger yachts


  • Ball Bearings - High compression stregnth carbon black Acetal.
  • Stage 2 Bearing - Glass fibre reinforced, MoS2 impregnated Nylon
  • Frame/Cheeks - Toughened, glass fibre reinforced Nylon
  • Sheave - Carbon fibre reinforced, PTFE impreganated Nylon