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Ronstan Series 30 BB / HL BlocksRonstan

RONSTAN Blocks - High Load Size 30 - Overview

Ultimate High & Static Load Performance - Ronstan Series 30 High Load Blocks are based upon the same race winning design concept as the Ronstan high performance Ball Bearing blocks, but utilise a full contact bearing for ultimate performance in high load or prolonged static load applications.

The Ideal Block for High Load Applications - Wear resistant sheave materials, either in lightweight, self lubricating polymer or in alloy with special purpose bushes, are suitable for use with rope or wire. High Load blocks provide outstanding static load performance and are typically used for halyards, backstays, etc.


  • Primary lead blocks on dinghies and catamarans
  • Control lines on larger yachts
  • Halyards
  • Backstays

  • Nylatron® sheave
  • Grade 316 stainless steel load strap and head fitting
  • Impact and U.V. resistant, fibre reinforced Nylon cheeks

  • currency magicCurrency:
    RONRF30171 - Ronstan Series 30 BB Block, Upright Lead
    Code: RONRF30171
    Original Price: $27.95
    Price: $21.38
    RONRF30174 - Ronstan Series 30 BB Block, Pivoting Lead
    Code: RONRF30174
    Original Price: $47.95
    Price: $36.68
    RONRF34000 - Ronstan Series 30 BB Sheave, Alloy, OD30mm x W7.7mm x ID6.2mm
    Code: RONRF34000
    Original Price: $39.95
    Price: $30.56
    RONRF34108 - Ronstan Series 30 BB Block, Single Loop Top, Clevis Pin Top
    Code: RONRF34108
    Original Price: $46.30
    Price: $35.42

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