Ronstan Series 40 Ball Bearing Orbit Block – Single – Stand-Up Swivel Head
Series 40 Ball Bearing Orbit Block – Single – Stand-Up Swivel Head
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 -grade 316 stainless steel.
- Stainless steel shackle head for ultimate durability with harsh fixing points.
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 minimizes 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 It’s Class
The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximizes 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 modeled to be stress optimized.
Recommended fasteners – 2 x 4mm (5/32") countersunk head screws
Applications:
- Mainsheet systems on spinnaker sheet 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
Materials:
- Ball Bearings – High compression strength carbon black Acetal.
- Stage 2 Bearing – Glass fiber reinforced, MoS2 impregnated Nylon
- Frame/Cheeks – Toughened, glass fiber reinforced Nylon
- Sheave – Carbon fiber reinforced, PTFE impregnated Nylon
| Weight | 0.2 lbs |
|---|---|
| Dimensions | 5 × 2 × 1 in |
| Manufacturer | RONSTAN |
| Part Number | RF45140 |
| Category Name | Sailing | Blocks |
| UPC | 9316800447473 |
| Google Catagory | VEHICLES & PARTS > VEHICLE PARTS & ACCESSORIES > WATERCRAFT PARTS & ACCESSORIES > SAILBOAT PARTS |
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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.
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Original manufacturer
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Damaged in Transit:
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For items you received that did not match your original order specifications, please contact us for return and replacement handling.
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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.
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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:
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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.
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