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Harken 75mm Carbo Ratchamatic® Cheek Block

$144.90 $127.99
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Harken 75mm Carbo Ratchamatic® Cheek Block

Harken's Carbo Ratchamatic® Blocks are load-sensing blocks that roll freely in both directions under low loads and automatically engage the ratchet as loads increase, making shifting between ratchet and light-air modes seamless. Unloaded main and jib sheets run out freely during mark roundings and asymmetrical spinnakers free instantly during jibes.

Ratchet engagement may be adjusted to a higher or lower load according to strength and sailing style.  The 75mm Ratchamatic® provides up to a 15:1 holding power.

The eight-faceted, hard lube-anodizing aluminum sheave holds line securely.

Includes RH fasteners and mounting pad.



  Imperial Metric
Sheave Diameter 2 15/16 in 75 mm
Max Line Diameter 7/16 in 12 mm
Max Working Load 750 lb 341 kg
Breaking Load 3,000 lb 1,361 kg
Holding Power w/ 180° Wrap 15:1 15:1
Shackle Pin Diameter N/A N/A
Weight w/ Shackle 6.5 oz 184 g
Length 4 1/16 in 103 mm