Ronstan S25 BB Orbit Block, Lashing
$26.99
Ronstan RF28109 Series 25 Ball Bearing Orbit Block, Lashing
- Description
- Specifications
- Product Enquiry
Description
Single sheave ball bearing block with becket and lashing head.
Series 25 Ball Bearing Orbit Blocks, delivering superior strength, reduced weight, and exceptional performance for high-demand dinghy and small boat applications.
Designed with competitive sailors and performance boats in mind, these compact 25mm blocks are engineered to achieve the highest possible strength-to-weight ratio. Featuring Ronstan’s renowned high compression strength acetal bearing system, the Series 25 BB Orbit Blocks are a lightweight yet durable solution, ideal for control line systems such as mainsheet and spinnaker sheet turning blocks, cunninghams, and cascading vangs on dinghies up to 4 metres.
Features:
- 2-stage ball bearing system
- Suits up to 8mm (5/16″) lines
- Hollow hub for becket take-off
- Lashing blocks suit up to 4mm (5/32″) lashing
| Type of Block | Single |
| Sheave diameter | 25mm |
| B.L. | 550kg |
| M.W.L. | 250kg |
| Max. rope diameter | 8mm |
| Weight | 14g |
| Sheave Material | Acetal |
Both the MWL & BL are dependent on the strength of line used to lash the block through the central hub. Knots, splices, stitching will generally have a lower BL than the line itself.
