Harken 57mm Ratchamatic® Block Swivel, Cam Cleat - Part #2627

Harken 57mm Ratchamatic® Block Swivel, Cam Cleat - Part #2627

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The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless.

Footnote Maximum working loads and breaking loads for blocks based on cam strengths. 
Sheave Ø (mm)57 mm
Sheave Ø (in)2 1/4 in
Length (mm)103 mm
Length (in)4 1/16 in
Weight (g)266 g
Weight (oz)9.4 oz
Shackle pin Ø (mm)5 mm
Shackle pin Ø (in)3/16 in
Maximum line Ø (mm)10 mm
Maximum line Ø (in)3/8 in
Maximum working load (kg)136 kg
Maximum working load (lb)300 lb
Breaking load (kg)340 kg
Breaking load (lb)750 lb
Holding power10:1