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Ronstan 55 mm Series 55 Ball Bearing Orbit Triple Block

  • Type: Triple Block with Becket & Swivel Head
  • Safe Working Load: 1650 lbs.
  • Maximum Line Size: 3/8"
  • Item #: 
    755835
    Brand: 
    Ronstan
    Model #: 
    RF55310
    Shipping Weight: 
    0.55 Lbs.
    List Price: 
    $130.53
     :
    $110.95
    110.95
    Status:    In Stock

    Quantity:  
     
     

    Ronstan Ball Bearing Orbit Blocks™ boast 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 9m (30ft)
    • Spinnaker sheets on dinghies, sportsboats and small keel boats to 9m (30ft)
    • Halyard, Vang and Backstay application on boats to 8m (26ft)
    • Control line applications on larger yachts
    • Mainsheet systems and spinnaker sheets on dinghies, catamarans, sportsboats and small keel boats to 9m (30ft)
    • Halyard, vang and backstay applications on boats to 8m (26ft)
    • Control line applications on larger yachts

    Specifications:

    • Sheave: 2-5/32"
    • Max. Line Size: 3/8"
    • Max. Working Load: 1650 lbs.*
    • Breaking Load: 3300 lbs.*

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

    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 SK75 Dyneema®
    • Head fitting: grade 316 stainless steel
    • Ball Bearings: high compression strength carbon black Acetal
     
     
    WARNING: This product MAY expose you to chemicals, which are known to the State of California to cause cancer, birth defects and/or other reproductive harm. For more information go to www.p65warnings.ca.gov
     
     

     
     

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