0-12-0

Under the Whyte notation for the classification of steam locomotives, 0-12-0 represents the wheel arrangement of no leading wheels, twelve powered and coupled driving wheels on six axles, and no trailing wheels.

Equivalent classifications

Other equivalent classifications are:

First example

The only known 0-12-0 was the Pennsylvania, designed by Jame Milholland for the Philadelphia and Reading Railroad and built at its own shops in 1863. It weighed fifty tons and was, at the time, the heaviest steam locomotive in the world.[1] It was intended to haul Pennsylvania coal trains.[2]

References

  1. ^ White 1972, p.28.
  2. ^ Ellis 1968 p.80.

Ellis, Hamilton (1968). Pictorial encyclopaedia of railways. London: Hamlyn. ISBN 0-600-37585-4. 

White, John H., Jr. (1972). Early Locomotives. New York: Dover. ISBN 0-486-22772-3. 

Single engine types
0-2-2 • 0-2-4 • 2-2-0 • 2-2-2 • 2-2-4 • 4-2-0 • 4-2-2 • 4-2-4 • 6-2-0
0-3-0
0-4-0 • 0-4-2 • 0-4-4 • 2-4-0 • 2-4-2 • 2-4-4 • 2-4-6 • 4-4-0 • 4-4-2 • 4-4-4 • 4-4-6
0-6-0 • 0-6-2 • 0-6-4 • 2-6-0 • 2-6-2 • 2-6-4 • 2-6-6 • 4-6-0 • 4-6-2 • 4-6-4
0-8-0 • 0-8-2 • 0-8-4 • 2-8-0 • 2-8-2 • 2-8-4 • 2-8-6 • 4-8-0 • 4-8-2 • 4-8-4 • 4-8-6 • 6-8-6
0-10-0 • 0-10-2 • 2-10-0 • 2-10-2 • 2-10-4 • 4-10-0 • 4-10-2
0-12-0 • 2-12-0 • 2-12-2 • 2-12-4 • 4-12-2 •
4-14-4
Divided drive and
Duplex engine types
2-(2-2)-0 • 2-(2-2)-2 • 2-2-(4-0) • 4-2-2-0 •
2-4-6-2 • 4-4-4-4 • 6-4-4-6 • 4-4-6-4 •
4-6-4-4
Articulated locomotives
Garratt and Meyer types
Articulated locomotives
Fairlie and Mallet types
(includes Triplex types).
0-4-4-0 • 0-4-4-2 • 2-4-4-0 • 2-4-4-2
0-6-6-0 • 2-6-6-0 • 2-6-6-2 • 2-6-6-4 • 2-6-6-6 • 2-6-8-0 • 4-6-6-2 • 4-6-6-4
0-8-6-0 • 0-8-8-0 • 2-8-8-0 • 2-8-8-2 • 2-8-8-4 • 4-8-8-2 • 4-8-8-4
2-10-10-2 • 2-8-8-8-2 • 2-8-8-8-4
Articulated locomotives
Engerth types
0-4-4 • 0-4-6
2-6-2 • 0-6-4 • 0-6-4-0
0-8-4 • 0-8-6