NZR K class (1932)

NZR K class (1932)
K class locomotive 925 at Paekākāriki in 1935.
Type and origin
Power typeSteam
BuilderNZR Hutt Workshops
Build date1932 - 1936
Specifications
Configuration:
 • Whyte4-8-4
Gauge3 ft 6 in (1,067 mm)
Driver dia.54 inches (1.372 m)
Wheelbase61 ft 10.5 in (18.86 m)
Length69 ft 8 in (21.23 m)
Width8 ft 6 in (2.59 m)
Height11 ft 6 in (3.51 m)
Adhesive weight54.25 long tons (55.12 t; 60.76 short tons)
Loco weight85.6 long tons (87.0 t; 95.9 short tons)
Tender weight50.0 long tons (50.8 t; 56.0 short tons)
Total weight135.6 long tons (137.8 t; 151.9 short tons)
Fuel typeCoal (original)
Oil (converted 1947 - 1953)
Fuel capacity7.75 long tons (7.87 t; 8.68 short tons) coal
1,570 imp gal (7,100 L; 1,890 US gal) oil
Water cap.5,000 imp gal (23,000 L; 6,000 US gal)
Firebox:
 • Grate area47.7 sq ft (4.4 m2)
Boiler pressure200 psi (1,379 kPa)
Heating surface1,933 sq ft (179.6 m2)
Superheater:
 • Heating area485 sq ft (45.1 m2)
CylindersTwo
Cylinder size20 in × 26 in (508 mm × 660 mm)
Performance figures
Maximum speed105 km/h (65 mph)
Tractive effort30,815 lbf (137.1 kN)
Career
Number in class30
Numbers900 - 929
First run1932
Preserved3
DispositionWithdrawn, 3 preserved

The NZR K class of 1932 was a class of mixed traffic 4-8-4 steam locomotives built by the New Zealand Railways Department (NZR) that operated on New Zealand's railway network.[1] The locomotives were developed following the failure of the G class Garratt locomotives. The class should not be confused with the much earlier K class of 1877-78, the first American-built engines to arrive in New Zealand.