NZR UB class

what is it?

The NZR UB class were a series of Ten Wheelers built by American manufacturers for New Zealand Railways (NZR) around the start of the twentieth century. Two batches were built by Baldwin in 1898 and 1901 (ten each). The earlier batch of engines had slide valves and inside Stephenson motion, the later had piston valves and Walschaerts valve gear, as well as a higher boiler pressure.

who runs it

base stats

• built 22made in total

Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.

fun facts

• 🎂First built 128 years ago, in 1898.
• ⌛Served for 59 years (1898–1957).

steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.

spec sheet

built

1898–1901

in service from

1898

retired

1957

status

retired

number built

22

kind

Steam

traction

steam

origin

🇺🇸 United States

builders

Baldwin Locomotive Works, Brooks Locomotive Works, Richmond Locomotive Works

operators

New Zealand Railways Department

top speed

—

power

—

gauge

1,067 mm Cape gauge

wheel arrangement

4-6-0

From the Wikipedia infobox and Wikidata. Blank means the sources don't say.