Harken 57mm Aluminum Stand-up Block

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. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C. Sheave Ø (mm) 57 mm
Sheave Ø (in) 2 1/4 in
Length (mm) 114 mm
Length (in) 4 1/2 in
Weight (g) 200 g
Weight (oz) 7.04 oz
Maximum line Ø (mm) 12 mm
Maximum line Ø (in) 7/16 in
Maximum working load (kg) 1134 kg
Maximum working load (lb) 2500 lb
Breaking load (kg) 2268 kg
Breaking load (lb) 5000 lb
Fasteners (mm) 6 mm
Fasteners (in) 1/4 in
Fastener circle (mm) 37 mm
Fastener circle (in) 1 15/32 in
A (mm) 57 mm
A (in) 2 7/32 in
B (mm) 56 mm
B (in) 2 3/16 in
C (mm) 32 mm
C (in) 1 1/4 in
Includes Padeye

Brand	HARKEN
SKU	3227
GTIN	097653264460

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