NZR KB class
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NZR KB class

NameNZR KB class
PowertypeSteam
Builddate1939
BuilderNZR Hillside Workshops, Dunedin|
Weight94.8 LT
Tenderweight52.9 LT
Locotenderweight147.7 LT
Whytetype 
Firstrundate1939 - 1940
LastrundateDecember 1968
DispositionWithdrawn; 1 preserved
Numinclass6
Weightondrivers56.0 LT
Wheelbase34 ft 10 in
Boilerpressure200 psi
FeedwaterheaterACFI|
Gauge42al=onlk=on
CurrentownerMainline Steam
Wheeldiameter54 in (1.4 m)
Cylindercount2 driving
2 booster
Cylindersize20 x 26 in (50.8 x 66 cm )
Poweroutput1400 hp (3556 kW)
Tractiveeffort30815 lbf (78270.1 kN)
36815 lbf (93510.1 kN) with booster
Retiredate1967 - 1969
LocaleSouth Island of New Zealand, mainly the Midland line
Roadnumber965 - 970
Length69 ft 8 in (177 1)
Height11 ft 6 in (29.2 1)
Width8 ft 6 in (21.6 1)
FueltypeCoal
Watercap5000 impgal (22730.5 L)
Fuelcap7.5 LT (34.1 t)
Firearea47.7 sqft (4.4 m2)
Totalsurface1984 sqft (184.3 m2)
Superheaterarea485 sqft (45.1 m2)

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The NZR KB class of 1939 was a class of mixed traffic steam locomotives that operated on New Zealand's railway network. They were built by the New Zealand Railways Department (NZR) after the success of the K class to meet the increasing traffic demands on the Midland Line in the South Island. The locomotives had a wheel arrangement of 4-8-4 and first appeared with distinctive streamlining, mainly to hide their ACFI feedwater systems.

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Key:

Number Builder Entered service Withdrawn Notes
965 NZR Hillside June , 1939 March , 1969
966 NZR Hillside August , 1939 October , 1967
967 NZR Hillside September , 1939 October , 1968
968 NZR Hillside October , 1939 March , 1969 Preserved by Ferrymead Trust; leased to Mainline Steam; currently under restoration.
969 NZR Hillside December , 1939 October , 1967
970 NZR Hillside January , 1940 March , 1969

Rail vehicles of New Zealand

Battery electric locomotivesE - EB
Diesel locomotivesDA (inc. DAA, DAR) - DB (inc. DBR) - DC (inc. DCP) - DE - DF (English Electric) - DF (General Motors) inc. DFT - DG (inc. DH of 1956) - DH of 1978 - DI - DJ - DL - DQ (inc. QR) - DS - DSA - DSB - DSC - DSG - DSJ - DX (inc. DXB, DXC and DXR) - TR
Diesel Multiple UnitsADK (inc. ADB trailers) - ADL (inc. ADC trailers)
Electric locomotivesEA (later EO of 1968) - EC - ED - EF - EO of 1923 - EW
Electric Multiple UnitsDM (inc. D trailers) - EM (inc. ET trailers) - "Matangi" FP (inc. FT trailers)
RailcarsRM class railcars: 88 seater (also known as Fiats or twinsets) - Clayton steam railcar - Edison battery-electric railcar - Leyland diesel railbus - Leyland experimental petrol railcar - MacEwan-Pratt petrol railcar - Model T Ford railcar - Sentinel-Cammell steam railcar - Silver Fern - Standard - Thomas Transmission - Vulcan - Wairarapa - Westinghouse

Non-RM class railcar: A 88 Buckhurst petrol carriage

Steam locomotivesA of 1873 - A of 1906 (inc. Ad) - AA - AB - B of 1874 - B of 1899 - BA - BB - BC - C of 1873 - C of 1930 - D of 1874 - D of 1929 - E of 1872-75 - E of 1906 - F - FA (inc. FB) - G of 1874 - G Garratt of 1928 (inc. Pacific rebuild) - H - J of 1874 - J of 1939 - JA - JB - K of 1877 - K of 1932 - KA - KB - L - LA - M - N - NA - NC - O - OA - OB - OC - P of 1876 - P of 1885 - Q of 1878 - Q of 1901 - R - S - T - U - UA - UB - UC - UD - V - W - WA - WAB (inc. WS) - WB - WD - WE - WF - WG - WH - WJ - WW - X - Y
Locomotive hauled carriages50-foot carriage - 56-foot carriage - ex-British Rail Mark 2 carriage- AK carriage - FM class guards van
See also: Locomotives of New Zealand; Motive power explanation; Multiple units and Railcars descriptions.



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