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 (mm) 125 mm

Sheave (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 (mm) 19 mm

Maximum line (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