42-57(2012) 1/2" DUPLEX SPROCKET TAPER BORE

Taper bore sprockets are manufactured to internationally recognised standards DIN8187-ISO/R 606 and are produced from C45 steel UNI EN 10083-1 having a minimum strength of 600 N/mm 2 and GG22 EN-GJL-200 UNI 1561 cast iron. They have a black phosphated finish to increase corrosion resistance so extending the sprockets working life.

Convenient taper bore to suit a standard taper bush that are pre-bored to suit both metric & imperial bore and key way sizes. Available to suit British standard roller chains 08B-1 (Duplex) 1/2" pitch sizes.