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Ronstan 55 mm Series 55 Ball Bearing Orbit Triple Block

  • Type: Triple Block with Swivel Head
  • Safe Working Load: 1650 lbs.
  • Maximum Line Size: 3/8"
  • Item #: 
    755835
    Brand: 
    Ronstan
    Model #: 

    RF55310

    Packaged Weight: 
    0.55 Lbs.
    List Price: 
    $133.19
    $115.48
    755835 Ronstan Ronstan 55 mm Series 55 Ball Bearing Orbit Triple Block RF55310

    The Ronstan 55 mm Series 55 Ball Bearing Orbit Triple Block™ with Swivel Head (RF55310) 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
    • Swivel shackle head for unlimited block rotation.
    • Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points.
    • Ultra low profile integrated beckets.

    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)
    • Halyard, vang and backstay applications on boats to 8 m (26 ft)
    • Control line applications on larger yachts

    Specifications:

    *Note: Total block load. Load on becket not to exceed 33% of block load. ie. SWL 250 kg (550 lb), BL 500 kg (1100 lb).

    • Safe working load: 1650 lb (748 kg)*
    • Breaking load: 3300 lb (1497 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
      • Head fitting: Grade 316 stainless steel
      • Rope Link: UV stabilized, multi-strand impregmented SK75 Dyneema®
    Ronstan 55 mm Series 55 Ball Bearing Orbit Triple Block
    115.48
    Status:  null Backordered
    Note: This item will ship when available.

    Add Item to Cart to See Sale Price

    The Ronstan 55 mm Series 55 Ball Bearing Orbit Triple Block™ with Swivel Head (RF55310) 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
    • Swivel shackle head for unlimited block rotation.
    • Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points.
    • Ultra low profile integrated beckets.

    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)
    • Halyard, vang and backstay applications on boats to 8 m (26 ft)
    • Control line applications on larger yachts

    Specifications:

    *Note: Total block load. Load on becket not to exceed 33% of block load. ie. SWL 250 kg (550 lb), BL 500 kg (1100 lb).

    • Safe working load: 1650 lb (748 kg)*
    • Breaking load: 3300 lb (1497 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
      • Head fitting: Grade 316 stainless steel
      • Rope Link: UV stabilized, multi-strand impregmented SK75 Dyneema®
     
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