Black Magic 45 block
The new Black Magic 45 has the same features as Harken’s classic Black Magic blocks, only smaller. Cheeks
are made of anodized aluminum while the pulley is made of composite material. Caged roller bearings optimize friction
while Delrin balls bear the lateral loads. They are perfect as primary blocks for sheets or halyards, or equally
suitable when used as hoists to control sails aboard larger vessels.
Black Magic 45 block – The data sheet
Pulley Ø (mm) 45 mm
Pulley Ø (in) 1 3/4 in
Length (mm) 100 mm
Length (in) 3 15/16 in
Weight (g) 79 g
Weight (oz) 2.79 oz
Shackle Ø (mm) 5 mm
Shackle Ø (in) 3/16 in
Max sheet Ø (mm) 10 mm
Max sheet Ø (in) 3/8 in
Maximum working load (kg) 750 kg
Maximum working load 1653 lb
Breaking load (kg) 1500 kg
Breaking load (lb) 3306 lb
