Harken 125mm Runner Block — Becket

Runners are used on running backstays of offshore boats to adjust mast bend for different wind conditions. Integrated sideplate bails and recessed cotter key help produce a smooth design that won’t snag lifelines. 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)125 mm

Sheave Ø (in)4 15/16 in

Length (mm)240 mm

Length (in)9 1/2 in

Width (mm)183.5 mm

Width (in)7 7/32 in

Weight (g)950 g

Weight (oz)33.52 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)9979 kg

Breaking load (lb)22000 lb

Clevis pin Ø (mm)19 mm

Clevis pin Ø (in)3/4 in