Sheave Boxes


  • The external tabs can be formed to fit the spar profile before fastening.

Sheave Ø22 mm
Max. Rope Ø3 mm
Max. Cable Ø3 mm
A25.5 mm
B26.0 mm
C7.5 mm
D5.0 mm
E- mm
B. L.320 kg
Weight30 g

Product Information

Ronstan manufactures an extensive range of sheave boxes for use with rope and wire. Plain bearing sheaves are ideal for halyards and other applications where high static loads are likely to be encountered.


  • Ideal for applications where lines (rope or wire) need to be led through decks, bulkheads or spars minimising friction and chafing


  • Nylatron® sheave
  • Grade 316 stainless steel cheeks