12B-2 finished bore sprockets

12B-2 finished bore sprockets are designed for duplex 12B-2 chain of 3/4" (19.05 mm) pitch to DIN 8187 / ISO 606. The bore and keyway are factory-machined, so the sprocket is ready to fit straight away.

12B-2 duplex finished bore sprocket - no clamping in a lathe

A wide duplex sprocket is harder to clamp in a lathe chuck, so a finished bore is a particularly big saving of time and money here. Two chain strands transmit more power without increasing the sprocket diameter, which helps when the machine is short of space.

12B-2 sprocket in C45 steel with bore and keyway

12B-2 duplex sprocket in C45 steel with a finished bore - the bore diameter and number of teeth are given in the product name. A wider choice of 12B duplex sprockets can be found in the Hub sprockets and Hardened hub sprockets groups.

The bore does not fit the shaft - customer questions about the 12B-2 sprocket

What if the bore does not fit my shaft?

Choose a 12B-2 pilot bore sprocket from the Hub sprockets group - you can machine the bore exactly to your shaft diameter.