Benkei?

The original Benkei like the one in your picture

Correction: That is not the original Benkei. That is a reprint Benkei for Plarail Day in 1998. The original Benkei (front switch) is taller and is a phantom gem of Plarail as stated by the author of the Plarail Museum.

I have one of these Western Railroad type: Asphalt Island Shuppo. The gear cracked but it was an easy fix by super gluing the cracked gear in place, it runs smoothly.