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Ronstan 15mm Ball Bearing Cheek Block - Single

Model: RF15151ARonstan
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Model RF15151A
In Stock
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Smallest and lightest ball bearing block available
Precision moulded acetal sheave running on stainless steel ball bearings provide high performance & low friction
Single loop head blocks include an O-ring to separate running line from head lashing or fixing


  • Low friction
  • High static and dynamic load capacity
  • Lightweight


  • Dinghy control lines
  • Vangs, cunninghams and tweakers
  • Shock cord tensioning systems


  • BB sheaves: UV stabilised acetal
  • Ball bearings: Stainless steel
  • Cheeks: Grade 316 stainless steel


  • Sheave Ø 15 mm
  • Max. Rope Ø 5 mm
  • Max. Cable Ø mm
  • Pin Ø mm
  • M.W.L. 120 kg
  • B. L. 360 kg
  • Weight 9 g