Ronstan Series 55 Ball Bearing Orbit Block™ – Single – Becket – Swivel Head
Series 55 Ball Bearing Orbit Block™ – Single – Becket – Swivel Head
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 fiber-reinforced load frame. The design was computer modelled to be stress optimised. The Dyneema® Link is produced from FSE Robline SK75 fiber, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point.
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 becket
Applications:
- Mainsheet systems on dinghies, sportsboats and small keelboats to 9M(30′)
- Spinnaker sheets on dinghies, sportsboats and small keel boats to 9M(30′)
- Halyard, Vang and Backstay application on boats to 8M(26′)
- Control line applications on larger yachts
- Ideal use for mainsheet systems and spinnaker sheets on dinghies, sportsboats and small keel boats to 9M(30′)
- Also ideal with halyard, vang and backstay applications on boats to 8M(26′)
- Spinnaker sheets on sportsboats and small keel boats (lateral lead blocks)
- Control line applications on larger yachts
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®
- Sheave: Carbon fiber reinforced, PTFE impregnated Nylon
- Head fitting: Grade 316 stainless steel.
Specifications:
Sheave Ø: 55mm(2-5/32")
Max. Rope Ø: 10mm(3/8")
M.W.L.: 500kg(1,100lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 88g(3.1oz)
SKU: 55256
Part number: RF55110
Package Size:
6 L x 3 W x 1 H
Weights: 0.3lbs
| Weight | 0.3 lbs |
|---|---|
| Dimensions | 6 × 3 × 1 in |
| Manufacturer | RONSTAN |
| Part Number | RF55110 |
| Country Of Origin | AUSTRALIA |
| Category Name | Sailing | Blocks |
| UPC | 9316800440405 |
| Google Catagory | VEHICLES & PARTS > VEHICLE PARTS & ACCESSORIES > WATERCRAFT PARTS & ACCESSORIES > SAILBOAT PARTS |
Be the first to review “Ronstan Series 55 Ball Bearing Orbit Block™ – Single – Becket – Swivel Head-RF55110”
You must be logged in to post a review.
-We Ship USA and Canada-
Call us for the worldwide shipping and best prices! 626-228-5021 or email
info@karibouusa.com
Orders ship within 2-3 business days
Free Shipping only by Usps, Fedex or UPS Ground Shipping (3-7 Business Days)
*Best Way Ground Shipping : $12.95 – We will choose the best way to ship the package. if you prefer UPS. Please don’t select the “Best Way Ground Shipping”, Otherwise we still ship Best Way Ground Shipping (Fedex, USPS) without notice.
*We ship from NJ and FL
*Free Shipping is not available on certain oversize items Rhodan, Dometic ECD.
Competitive Expedited options for Next Day or 2Day Air
*Please be aware that ground shipping does not guarantee specific delivery dates or times. If you have an event day or time-sensitive requirement, we recommend selecting our guarantee services, such as 3-day select or next-day air. These services are provided by the carrier and come with their own delivery guarantees. Kindly note that any claims or issues regarding delivery timelines should be addressed directly with the carrier as their responsibility.
*If you are looking at a special order item feel free to request a shipping quote.
*If a package requires signature and you won’t be available please get with us immediately so that we can have it held for you.
*Some oversize items are not included in our Free Shipping promo and will populate a fixed shipping cost at checkout.
*KaribouUSA.com attempts to publish an accurate catalog. Despite our best efforts, we are not responsible for typographical errors. Prices may change at any time. Shipping weights are actual weights and express shipments may weigh more or less due to dimensional weight calculations.
More: Shipping Policy
Return Policy
Our goal is to make sure you receive the correct item to meet your needs. Should you find it necessary to return an item, please follow these guidelines to insure we are able to get you a prompt refund and assist you in finding the correct item you require.
Requesting a Return Authorization is easy send request to support@karibouusa.com
Original manufacturer
Boxes/packaging: Items must be returned in original packaging including any manufacturer boxes. Please return these inside another box or wrapped and do not apply stickers, stamps, labels to manufacturer boxes, i.e. prop boxes. This may void your RA and incur a 20% restock fee.
Damaged in Transit:
For items damaged in transit please contact us immediately for assistance for special handling and filing of required paperwork to have your item replaced. Disputes of damaged products have to be reported to the carrier for resolution.
Incorrectly Shipped Items:
For items you received that did not match your original order specifications, please contact us for return and replacement handling.
support@karibouusa.com
Warranty Issues:
We will assist our customers with any warranty issues on products purchased through First Choice Marine, but we do not express or imply any warranty beyond that of the manufacturer. All defective products will observe manufacturer specific policies.
Condition of return items:
Items returned for credit must be returned in new, unused, uninstalled and saleable condition, including any retail packaging. Open any packaging with care when receiving your order so as not to damage it should you need to return the product. Items returned that do not meet this requirement are subject to a 20% restock fee.
Packaging, insuring and tracking:
You must send the return package signature required and insured at your expense (unless it is defective or the result of our error in shipment). Packaging of the return item is very important. Obtaining tracking is a good idea and if you do, please email or call us with that number so we can be expecting your return.
Damaged return package:
In the case of a returned item that is damaged in return shipment, you will be notified and if you insured the package you should be reimbursed by the shipper of the product. They retain the right to pick up the package for inspection. Although at that time it is no longer our responsibility, we will do everything possible to assist you in your damage claim. With proper packaging of your return item this should not be an issue.
Electronic Charts & Software:
ALL ELECTRONIC CHARTS AND SOFTWARE ARE NON-RETURNABLE. We do stand behind any manufacturers warranty on any purchased chart or software and will be happy to assist in a warranty situation. If you need a chart and are not sure if it will fit your unit, please send the unit model and serial so we can confirm fitment. Most manufacturers will work with you to exchange the chart for the proper one but is best to ask questions up front and confirm before ordering.
More: Return Policy Page.
Related products
Reviews
There are no reviews yet.