| Class | Wheel Arr- angement |
Dr. Dia. |
Cylinders Diam. x Str. |
Boiler Press. |
Ad. Wt. |
EW WO |
Grate Area |
Evap. Surface |
Sup. Surface |
Remarks |
| A | 4-4-0 | 55in | 15½x22in | 150psi | 20t | 30t | 15sq.ft. | 865sq.ft. | none | |
| B | 4-4-0 | 48in | 14½x20in | 140psi | 18t | 27t | 14sq.ft. | 780sq.ft. | none | |
| C | 2-6-0 | 39in | 14½x20in | 140psi | 22t | 26t | 14sq.ft. | 780sq.ft. | none | |
| CC | 2-6-0 | 39in | 15x20in | 175psi | 28t | 33t | 16sq.ft. | 880sq.ft. | none | Ex C |
| CCS | 2-6-0 | 39in | 15x20in | 175psi | 29t | 34t | 16sq.ft. | 900sq.ft. total | Ex C | |
| D | 2-4-2T | 45in | 12½x20in | 140psi | 17t | 29t | 11sq.ft. | 544sq.ft. | none | |
| D3 | 2-6-4T | 45in | 14x22in | 200psi | 27t | 44t | 15sq.ft. | 729sq.ft. | none | NZGR Wf |
| E | 4-6-0 | 42in | 16x22in | 175psi | 28t | 38t | 17sq.ft. | 1156sq.ft. | none | |
| F | 2-6-0 | 39in | 14½x20in | 185psi | 23t | 28t | 14sq.ft. | 806sq.ft. | none | CR NFB |
| G | 0-4-2T | 30in | 12x16in | 140psi | 17t | 20t | 10sq.ft. | 375sq.ft. | none | 2' gauge |
| G | 4-8-2+2-8-4T | 48in | 14¼x24in(4) | 200psi | 69t | 121t | 35sq.ft. | 1698sq.ft. | 315sq.ft. | Garratt |
| H | 4-8-2 | 48in | 18x24in | 200psi | 48t | 66t | 34sq.ft. | 1588sq.ft. | 372sq.ft. | |
| J | 2-6-4-0T | 33in | 153/8x153/8in | 185psi | 38t | 43t | none | 2' Hagans | ||
| K | 0-4-0+0-4-0T | 31½in | 11/15x16in | 195psi | 34t | 34t | 15sq.ft. | 628sq.ft. | none | 2' Garratt |
| L | 2-6-2+2-6-2T | 42in | 15x22in(4) | 160psi | 57t | 90t | 34sq.ft. | 1686sq.ft. | 333sq.ft. | Garratt |
| M | 4-4-2+2-4-4T | 60in | 12x20in(8) | 160psi | 48t | 95t | 34sq.ft. | 1686sq.ft. | 333sq.ft. | Garratt |
| M | 4-6-2 | 55in | 16x24in | 180psi | 40t | 54t | 23sq.ft. | 1109sq.ft. | 265sq.ft. | 1951 |
| MA | 4-6-2 | 48in | 16x24in | 180psi | 40t | 54t | 23sq.ft. | 1109sq.ft. | 265sq.ft. | Ex M |
| Q | 4-8-2 | 48in | 20x24in | 160psi | 48t | 66t | or 180psi | |||
| R | 4-6-2 | 55in | 20x24in | 160psi | 39t | 60t | 33sq.ft. | 1069sq.ft. | 258sq.ft. | |
| T | 4-8-0 | 43in | 16½x22in | 175psi | 31t | 42t | 17sq.ft. | 1048sq.ft. | none | SAR T |