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Ronstan Orbit Ball Bearing Block™ - Single Dyneema® Link Block
Ronstan Ball Bearing Orbit Blocks™ feature the unique orbital version of the Ronstan 2 stage bearing system. Recirculating ball bearings are positioned exclusively in the loaded area of the sheave and a second full contact bearing maintains low friction across the full working load range. Combined with composite reinforced polymer materials, Orbit Blocks™ offer maximum strength to weight ratio for high load and dynamic applications.
Ronstan Orbit Dyneema® Link blocks feature a soft loop manufactured from high-grade SK78 fibre, the Dyneema® link is easily fitted and secured by the moulded retainer clip. The flexible link allows limited articulation in a 0° or 90° orientation and maximum weight saving. Soft attachment blocks also reduce noise onboard and avoid damage to other fittings.
Dyneema Link blocks are recommended for the following applications:
- Mainsheet and Spinnaker sheet systems¹
- Halyard, vang and backstay applications²
- Control lines on larger boats
| Ref. | Sheave mm |
Maximum Line Ø mm |
Working Load kg |
Breaking Load kg |
Weight g |
1. Max boat length | 2. Max boat length |
| RF45101 | 40 | 9 | 325* | 700* | 36 | 5 m | 8 m |
| RF55101 | 55 | 10 | 500* | 1000* | 75 | 9 m | 8 m |
| Code | Ronstan Orbit Block™ | Availability | Price | |
|---|---|---|---|---|
|
RONSTAN RF45101
|
3 days
|
€28.29 (inc. VAT)
€23.38 (ex. VAT) |
|
|
RONSTAN RF55101
|
3 days
|
€44.59 (inc. VAT)
€36.85 (ex. VAT) |
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