Defender Home Page
Phone: 800-628-8225 Fax: 800-654-1616 Int'l.: 860-701-3400 Email: Contact Us
Follow us on Facebook
Shipping Info
Defender Home Page
Your Cart
null View Cart View Shopping Cart
null Check My Order(s)
null Track My Package(s)
Conversion Chart
Shopping Areas
Boats & Motors
null Defender Seal null
promo A
promo B
promo C
promo D

Ronstan 40 mm Series 40 BB Orbit Block

  • Single Block with Becket and Swivel Head
  • Safe Working Load: 715 lbs
  • Maximum Line Size: 5/16"
  • Item #: 
    Model #: 


    Shipping Weight: 
    0.10 Lbs.
    List Price: 
    Status:  null In Stock

    Quantity : 


    Series 40 BB Orbit Block™ Single with becket and swivel head


    • Swivel shackle head for unlimited block rotation
    • Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points
    • Ultra low profile integrated becket
    • Mainsheet systems and spinnaker sheets on dinghies, sportsboats and small keel boats to 8m(26ft)
    • For Halyard, vang and backstay applications on boats up to 8 meters ( 26 feet )
    • Sheave: Carbon fiber reinforced, PTFE impregnated Nylon
    • Head fitting: grade 316 stainless steel
    • Ball Bearings: High compression strength carbon black Acetal
    • Stage 2 Bearing: Glass fiber reinforced, MoS2 impregnated Nylon


    • Safe working load: 715 lb (325 kg)
    • Breaking load: 1430 lb (650 kg)
    • Weight: 1.6oz (44g)
    • Sheave diameter: 1-9/16" (40 mm)
    • Maximum line size: 5/16" (8 mm)


    Have A Suggestion?

    Help us make our site better for everyone! Let us know you've found something wrong or frustrating on this page and we will improve it. Please mark each that apply.

    Product has been improperly categorized
    Page loads too slowly
    Product information is incorrect
    Page has errors or bugs
    Site is frustrating or difficult to use
    Product image is missing or wrong
    Cannot find my size
    Spelling errors on page
    Not enough product information

    Comments or Examples:
    Examples: Missing information such as dimensions and model number, typos, inaccuracies, etc...

    Please include your e-mail address below if you would like us to respond to your comments or questions.             

    Join Our Email List And Receive our Monthly Promotions
    Defender Email Specials
    Click Here For Our Privacy Policy