An 0-8-6-0, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is a locomotive with no leading wheels, eight driving wheels (4 axles) fixed in a rigid frame, six driving wheels (3 axles) and no trailing wheels.
Examples
Six locomotives with this wheel arrangement were built by Kitson & Co. as Kitson Meyers for the Transandine Railway, three of which survive today.
References
0-8-6-0 Wikipedia(Text) CC BY-SA