Harken 57mm Carbo Ratchamatic

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.

Standard grip: medium/light air; 10:1 holding power.

Description = Single
Sheave dia. (in) = 2.25
Sheave dia. (mm) = 57 
Length (in) = 4.0625
Length (mm) = 103
Weight (oz) = 3.7
Weight (g) = 104
Max. line dia. (in) = 3/8
Max. line dia. (mm) = 10 
Shackle pin dia. (in) = 3/16 
Shackle pin dia. (mm) = 5  
Max. working load (lb) = 500
Max. working load (kg) = 227
Breaking load (lb) = 2000 
Breaking load (kg) = 907
Holding power w/180 degree wrap 50 lb (23 kg) = 10:1 

Download Catalog Page