The most efficient small boat blocks Harken has ever made
Ceramic ball bearings
700% stronger than stainless balls
NEW - 40mm Zircon Blocks from Harken
The most efficient small boat blocks Harken has ever made with industrial ceramic ball bearings mounted inside caged races.
More than 700% stronger in compression than stainless balls.
Ceramic is much harder and smoother than steel or composite.
Sheave and side plates are strong and reliable fibre-reinforced composite construction.
Structural head for soft attachment
|Part No.||Block Type||Sheave Ø||Length||Weight||Optimal line Ø||Maximum Working Load||Breaking Load|
|2190||40 mm Single||1 9/16 in||40mm||2 3/8 in||60mm||0.81 oz||22.9||6mm||250 lb||115kg||750 lb||340 kg|
|2191||40 mm Single w/becket||1 9/16 in||40mm||2 7/8 in||73mm||0.93 oz||26.5||6mm||250 lb||115kg||750 lb||340 kg|
|2192||40 mm Double||1 9/16 in||40mm||2 3/8 in||60mm||1.58 oz||44.7||6mm||500 lb||230kg||1500 lb||680 kg|
|2193||40 mm Double w/becket||1 9/16 in||40mm||2 7/8 in||73mm||1.68 oz||47.6||6mm||500 lb||230kg||1500 lb||680 kg|
- Block Size - 40 mm