Pre-bored 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. They have induction hardened teeth to reduce tooth wear so extending the sprockets working life.

Convenient metric bore sizes with a corresponding key way that is located on the centre line of a tooth, 2 grub screws at 90° to each other for securing to a shaft.
Available to suit British standard roller chains 12B-1 (Simplex) 3/4" pitch sizes.