HARKEN 57MM BLACK MAGIC HI LOAD FOOT BLOCK
Use Black Magic footblocks to redirect lines on the deck.
Either metric or imperial flathead fasteners may be used for mounting and are not exposed.
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)
57 mm
Sheave Ø (in)
2 1/4 in
Length (mm)
84 mm
Length (in)
3 5/16 in
Height (mm)
25 mm
Height (in)
1 in
Weight (g)
122 g
Weight (oz)
4.29 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
Number of fasteners
4
Fasteners (mm)
6 FH mm
Fasteners (in)
1/4 FH in
A (mm)
9.5 mm
A (in)
3/8 in
B (mm)
22.5 mm
B (in)
29/32 in
C (mm)
51.5 mm
C (in)
2 1/32 in
D (mm)
16 mm
D (in)
5/8 in
E (mm)
59 mm
E (in)
2 5/16 in
F (mm)
84 mm
F (in)
3 5/16 in
G (mm)
13 mm
G (in)
1/2 in