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Ronstan 55 mm Series 55 Orbit Block

  • Single Block with Upright Lead
  • Safe Working Load: 1100 lbs
  • Maximum Line Size: 3/8"
  • Item #: 
    600658
    Brand: 
    Ronstan
    Model #: 

    RF55171

    Packaged Weight: 
    0.20 Lbs.
    List Price: 
    $58.81
    $49.99
    600658 Ronstan Ronstan 55 mm Series 55 Orbit Block RF55171

    The Ronstan 55 mm Series 55 Single Orbit Block™ with Upright Lead (RF55171) boasts the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and a Dyneema® rope link head. Their precision design allows the optimum number of ball bearings in loaded areas and eliminates them in inactive areas. Ineffective mass is reduced even further through fiber-reinforced composites in the block head, cleat arms and beckets.

    Features:

    • Ultra Lightweight
    • Low friction 2-stage Orbital ball bearing system
    • Highest working load in its class
    • Low profile and compact
    • High performance cleating
    • Easily fitted and securely retained Dyneema Link head

    Applications:

    • Mainsheet systems on dinghies, sportsboats and small keelboats to 9 m (30 ft)
    • Spinnaker sheets on dinghies, sportsboats and small keel boats to 9 m (30 ft)
    • Halyard, Vang and Backstay application on boats to 8 m (26 ft)
    • Control line applications on larger yachts
    • Mainsheet systems and spinnaker sheets on dinghies, catamarans, sportsboats and small keel boats to 9 m (30 ft)

    Specifications:

    • Safe working load: 1100 lb (500 kg)
    • Breaking load: 2200 lb (1000 kg)
    • Sheave diameter: 2-5/32" (55 mm)
    • Maximum line size: 3/8" (10 mm)
    • Materials:
      • Ball bearings - High compression strength carbon black Acetal
      • Stage 2 bearing - Carbon fiber reinforced, PTFE impregnated Nylon
      • Frame/Cheeks - Toughened, glass fiber reinforced Nylon
      • Rope Link: UV stabilized, multi-strand impregmented SK75 Dyneema®
    Ronstan 55 mm Series 55 Orbit Block
    49.99
    Status:  null In Stock

    The Ronstan 55 mm Series 55 Single Orbit Block™ with Upright Lead (RF55171) boasts the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and a Dyneema® rope link head. Their precision design allows the optimum number of ball bearings in loaded areas and eliminates them in inactive areas. Ineffective mass is reduced even further through fiber-reinforced composites in the block head, cleat arms and beckets.

    Features:

    • Ultra Lightweight
    • Low friction 2-stage Orbital ball bearing system
    • Highest working load in its class
    • Low profile and compact
    • High performance cleating
    • Easily fitted and securely retained Dyneema Link head

    Applications:

    • Mainsheet systems on dinghies, sportsboats and small keelboats to 9 m (30 ft)
    • Spinnaker sheets on dinghies, sportsboats and small keel boats to 9 m (30 ft)
    • Halyard, Vang and Backstay application on boats to 8 m (26 ft)
    • Control line applications on larger yachts
    • Mainsheet systems and spinnaker sheets on dinghies, catamarans, sportsboats and small keel boats to 9 m (30 ft)

    Specifications:

    • Safe working load: 1100 lb (500 kg)
    • Breaking load: 2200 lb (1000 kg)
    • Sheave diameter: 2-5/32" (55 mm)
    • Maximum line size: 3/8" (10 mm)
    • Materials:
      • Ball bearings - High compression strength carbon black Acetal
      • Stage 2 bearing - Carbon fiber reinforced, PTFE impregnated Nylon
      • Frame/Cheeks - Toughened, glass fiber reinforced Nylon
      • Rope Link: UV stabilized, multi-strand impregmented SK75 Dyneema®
     
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