2022 Ronstan Marine Catalogue - VIEW CATALOGUE




  • High static and dynamic load capacity
  • Keeps lines close to the deck
  • Cheek cut-outs for easy bearing cleaning and maintenance
  • Blocks can be disassembled for servicing
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Ball Bearing models have Torlon® needle rollers for axial loads, and acetal ball bearings for side thrust loads.The self-contained alloy sheave packages provide reliable, low-friction performance at high loads. The high axial loads are carried by Torlon® roller needle bearings, while side thrust loads are taken up by Acetal ball bearings. Block sheeve and cheeks ar
Sheave Ų5 in.
Max. Rope Ų5/8 in.
Max. Cable Ų- in
Fastener Ų3/8 + 5/16 in.
M.W.L.8270 lb.
B. L.16530 lb.
Weight27.4 oz.
  • Typically used for halyards at the mast base.
  • Alloy sheave and housing
  • Torlon® needle rollers
  • Black carbon Acetal ball bearings