Product

HARKEN 125MM BLACK MAGIC STAND UP BLOCK

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Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action.

Sideplates and sheaves Hard Lube-anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon® roller bearings separated and parallel to reduce friction.

Sheave Ø (mm)
125 mm

Sheave Ø (in)
4 15/16 in

Length (mm)
230 mm

Length (in)
9 1/16 in

Width (mm)
127.5 mm

Width (in)
5 1/32 in

Weight (g)
1268 g

Weight (oz)
44.72 oz

Maximum line Ø (mm)
19 mm

Maximum line Ø (in)
3/4 in

Maximum working load (kg)
4990 kg

Maximum working load (lb)
11000 lb

Breaking load (kg)
9977 kg

Breaking load (lb)
22000 lb

A (mm)
93 mm

A (in)
3 21/32 in

B (mm)
106 mm

B (in)
4 3/16 in

C (mm)
57 mm

C (in)
2 1/4 in

Footnote
Uses hole spacing and base dimensions of 648 padeye. Maximum working load decreases at varying angles.