![Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171]](http://boatpartsdepot.com/cdn/shop/files/Untitled_design_-_2024-08-27T112243.892.png?v=1724739877&width=3840)
![Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171]](http://boatpartsdepot.com/cdn/shop/files/Untitled_design_-_2024-09-04T143540.404.png?v=1725442585&width=3840)
![Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171]](http://boatpartsdepot.com/cdn/shop/files/Untitled_design_-_2024-08-27T113233.566.png?v=1724740371&width=3840)
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![Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171]](http://boatpartsdepot.com/cdn/shop/files/70615XL_180x.jpg?v=1723183142)
Series 40 Ball Bearing Block - Single Upright LeadLead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision molded Acetal sheaves running on Acetal...
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Series 40 Ball Bearing Block - Single Upright Lead
Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision molded Acetal sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.
Applications:
- Typically used for halyards at the mast base.
Materials:
- Acetal ball bearings
- UV stabilized Acetal sheave
- Grade 316 stainless steel load housing
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