Series 40 Ball Bearing Orbit Block™, with Dyneema® Link Head and Low Profile Integrated Becket
Single, integrated becket, Lightweight Dyneema® Link Head.
FEATURES
Ultra Lightweight.
Low friction 2-stage Orbital ball bearing system.
Highest working load in its class.
Low profile and compact.
High performance cleatingUltra low profile becket.
Easily fitted and securely retained Dyneema® Link head
Specifications
Product Specifications
Max. Rope diameter (in)
5/16
M.W.L. (lb)
715
Sheave diameter (in)
1 9/16
B.L. (lb)
1543
Weight (oz)
1.3
Notes:
Total block load. Becket MWL 125kg (275lb), BL 250kg (550lb). Suitable for 3:1 system at rated block load. Replacement Dyneema® Link Available as RF9003-07
Lightweight Kilogram for kilogram of working load, BB and RT Orbit Blocks™ are the world’s lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimises the mass of the inactive return race and hub. Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible. Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block.
Highest working load in its class . The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximises load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range. The floating sheave and bearing system is supported by a fibre-reinforced load frame. The design was computer modelled to be stress optimised.
. Dyneema® Specialties To gain peak performance, we engineered out the heavy steel load straps, head post, shackle, full-length fasteners, and cleating accessories. Through extensive research and development, we replaced virtually all metal components with high-tech polymers and fibre equivalents. The Dyneema® Link is produced from FSE Robline SK75 fibre, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point The flexible Dyneema® Link provides controlled rotation and 0° or 90° orientation. It connects directly to the head of the block rather than to an intermediate head post. This reduces weight and gives the lowest possible profile while allowing full articulation. Beckets have been carefully designed to minimise height It is easily fitted and is retained securely by a moulded retainer clip. The flexible link can be left with one end attached to the block when fitting - no more lost shackle pins
. The system is compatible with Dyneema® Spectra strops, webbing and carbon connection points - much more so than steel loop tops or shackles.
Technical Information
Applications
Mainsheet systems and spinnaker sheets 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
We would love to keep in touch with you! Sign up to our quarterly newsletter and receive news, tips, and updates right in your inbox.
Newsletter
Our use of cookies
We use necessary cookies to make our site work. We'd also like to set optional cookies to help us improve it.
We won't set optional cookies unless you enable them.
Using this tool will set a cookie on your device to remember your preferences.
Necessary
Necessary cookies enable core functionality such as security, network management, and accessibility. You may disable these by changing your browser settings, but this may affect how the website functions.
Name
Description
PHPSESSID
Preserves the visitor's session state across page requests.
form_key
Protects visitor's data from Cross-Site Request Forgery Attacks.
guest-view
Stores the Order ID that guest shoppers use to retrieve their order status. Used in “Orders and Returns” widgets.
login_redirect
Preserves the destination page the customer was loading before being directed to log in.
mage-banners-cache-storage
Stores banner content locally to improve performance.
mage-cache-sessid
The value of this cookie triggers the cleanup of local cache storage.
mage-cache-storage
Local storage of visitor-specific content that enables ecommerce functions.
mage-cache-storage-section-invalidation
Forces local storage of specific content sections that should be invalidated.
mage-messages
Tracks error messages and other notifications that are shown to the user, such as the cookie consent message, and various error messages. The message is deleted from the cookie after it is shown to the shopper.
private_content_version
Appends a random, unique number and time to pages with customer content to prevent them from being cached on the server.
section_data_ids
Stores customer-specific information related to shopper-initiated actions such as display wish list, checkout information, etc.
user_allowed_save_cookie, cookie_consent
Stores the user's cookie consent state for the current domain.
X-Magento-Vary
Configuration setting that improves performance when using Varnish static content caching.
Preferences
Preference cookies are used to store settings and information that changes the website look and functionality.
Name
Description
store
Remembers the user's selected language version of a website.
Marketing
Marketing cookies help us provide our visitors with relevant content, browsing history, and product recommendations.
Name
Description
product_data_storage
Stores configuration for product data related to Recently Viewed / Compared Products.
recently_compared_product
Stores product IDs of recently compared products.
recently_compared_product_previous
Stores product IDs of previously compared products for easy navigation.
recently_viewed_product
Stores product IDs of recently viewed products for easy navigation.
recently_viewed_product_previous
Stores product IDs of recently previously viewed products for easy navigation.
_fbp
This cookie is installed by Facebook to store and track visits across websites.
Analytics
Analytics cookies help us understand how our visitors interact with the website. It helps us understand the number of visitors, where the visitors are coming from, and the pages they navigate. The cookies collect this data and are reported anonymously.
Name
Description
add_to_cart, remove_from_cart
Used by Google Tag Manager. Captures the product SKU, name, price and quantity added or removed from the cart, and makes the information available for future integration by third-party scripts.
dc_gtm_*
Throttles request rate when Google Analytics is deployed with Google Tag Manager.
_ga, _gat, _gid, _ga_*, _gat_*
This cookie is installed by Google Analytics. They are used to collect information about how visitors use our website. We use the information to compile reports and to help us improve the website. The cookies collect information in a way that does not directly identify anyone.