400 mm2 to 800 mm2 Suspension Roller
Nylon, painted steel or aluminium sheave mounted on roller (cone bearings for central sheave). Plated steel frame with hinged side gate. Swivel tongue or clevis head fitting on single sheave blocks (nominate type), 3 & 5 sheave blocks normally suspended from link plate under the insulator string but swivel clevis head fitting is available upon request. Safety factor 3:1.