Product Description

Harken 125mm Aluminum Double Footblock
Description - The entire line of Black Magic® AirBlocks® has been redesigned with a sleek new look. Their unique, performance-packed engineering remains exactly the same.
Carrying some of the highest loads imposed by running rigging, these strong, lightweight blocks feature Torlon® roller bearings housed in a center cage. Rollers stay parallel for low-friction efficiency. Sculpted hardcoat-anodized aluminum sideplates protect sideload ball bearings. Dissimilar metals are isolated to minimize corrosion. Blocks are easily disassembled with a single hex wrench.
Either metric or imperial flathead fasteners may be used for mounting and are not exposed.
Sheave Ø (mm) 125 mm
Sheave Ø (in) 4 15/16 in
Length (mm) 176 mm
Length (in) 6 15/16 in
Height (mm) 71.5 mm
Height (in) 2 13/16 in
Weight (g) 1711 g
Weight (oz) 60.35 oz
Maximum line Ø (mm) 19 mm
Maximum line Ø (in) 3/4 in
Maximum working load (kg) 3292 kg
Maximum working load (lb) 7260 lb
Breaking load (kg) 6585 kg
Breaking load (lb) 14520 lb
Number of fasteners 4
Fasteners (mm) 12 FH mm
Fasteners (in) 1/2 FH in
A (mm) 14 mm
A (in) 17/32 in
B (mm) 50 mm
B (in) 1 25/32 in
C (mm) 113 mm
C (in) 4 7/16 in
D (mm) 35 mm
D (in) 1 11/32 in
E (mm) 125 mm
E (in) 4 29/32 in
F (mm) 176 mm
F (in) 6 29/32 in
G (mm) 23 mm
G (in) 29/32 in