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Harken Carbo Ratchets 40mm Single Swivel
Harken Carbo Ratchets 40mm Single Swivel

On / Off switch

Single ball bearing faceted sheave

Compact, robust construction

High strength to weight ratio

With or without becket

Select by sheave diameter:
40mm, 57mm or 75mm

£68.00

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Harken Carbo Ratchets allow sailors to hand-hold lines under load and offer balance between holding power and controlled easing.

Harken Carbo Facts and Features:

  • Available with or without becket and in 3 sheave diameters - 40mm, 57mm and 75mm
  • Nylon resin sideplates are densely packed with long-glass fibres for a compact block with a high strength to weight ratio
  • Machined aluminium sheaves are hardcoat anodised for strength and corrosion resistance
  • Eight facets (shaped sections) on the sheave hold the line securely
  • Ball bearings, sheaves, and sideplates are UV stabilised wih carbon black for maximum protection
  • On / Off switch ergonomically operable from both sides
  • Ideal for main/jib/spinnaker sheets, mainsheet fine-tune, traveller controls, genoa leads and foreguys.

For the ultimate system mount a switchable ratchet in the cockpit and a boom-mounted Ratchamatic® directly above to allow double holding power in heavy air and to ensure the mainsheet runs freely in light air.

HarkenBlockMaximum Break LoadSafe Working LoadMaximum Line DiameterWeight
2608 40mm Single Swivel 454kg 136kg 10mm 49grams
2135 57mm Single Swivel 907kg 227kg 10mm 85grams
2670 75mm Single Swivel 1361kg 341kg 12mm 227grams
2609 40mm Single Swivel Becket 454kg 136kg 10mm 52grams
2136 57mm Single Swivel Becket 907kg 227kg 10mm 94grams
2671 75mm Single Swivel Becket 1361kg 341kg 12mm 248grams

A becket is the starting point for the line in a purchase system, but it is also extremely useful for holding blocks up and off the deck with the addition of a short length of shock cord (bungee elastic) attached from the becket to e.g. the lower rail/guard wire.

  • Block Size - 40 mm
  • Block Size - 57 mm
  • Block Size - 75 mm
  • Block Size - 52 mm