DR Class 25.10

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title: "DR Class 25.10" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["steam-locomotives-of-germany", "deutsche-reichsbahn-(east-germany)-locomotives", "railway-locomotives-introduced-in-1954", "passenger-locomotives", "standard-gauge-locomotives-of-germany", "2-8-0-locomotives", "1′d-h2-locomotives", "lkm-locomotives"] description: "Passenger train locomotive" topic_path: "geography/germany" source: "https://en.wikipedia.org/wiki/DR_Class_25.10" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Passenger train locomotive ::

::data[format=table title="Infobox locomotive"]

Field	Value
name	DR Class 25.10
bgcolor	A00
color	FFF
image	Bundesarchiv_Bild_183-31401-0001%2C_Kohlenstaublok_25_1001_%28BR_25%29.jpg
caption	25 1001 fitted for coal dust firing
powertype	Steam
builder
serialnumber	120011/1, 120011/2
builddate	1954–1955
totalproduction	2
whytetype
uicclass	1′D h2
DRGtype
driver
gauge
leadingdiameter	1000 mm
driverdiameter	1600 mm
tenderdiameter	1000 mm
wheelspacing
engine total	9700 mm
drivers
coupled
tender total
tendertruck
tenderbogie	1900 mm
wheelbasewithtender
pivotcentres
over buffers
height	4475 mm
axleload
leadingbogie/pony
coupled all
coupled 1
coupled 2
coupled 3
trail bogie/pony
tenderbogieload
tenderaxle
weightondrivers
emptyweight
serviceweight
tendertype
fueltype
fuelcap
watercap	27.5 -
fireboxtype
firearea
boiler
boilertype
pitch
lengthinside
smalltubediameter
largetubediameter	133 mm, 35 off
boilerpressure	16 bar
safetyvalvetype
fireboxarea
tubearea
fluearea
totalsurface
superheaterarea
cylindercount	Two, outside
cylindersize	600 x
maxspeed	100 km/h
indicatedpower	2380 PS
operator	Deutsche Reichsbahn (GDR)
fleetnumbers	25 001 (→ 25 1002), 25 1001
retiredate	1967
::

| name = DR Class 25.10 | bgcolor = A00 | color = FFF | image = Bundesarchiv_Bild_183-31401-0001%2C_Kohlenstaublok_25_1001_%28BR_25%29.jpg | alt = | caption = 25 1001 fitted for coal dust firing | powertype = Steam | designer = | builder = | ordernumber = | serialnumber = 120011/1, 120011/2 | buildmodel = | builddate = 1954–1955 | totalproduction = 2 | rebuilder = | rebuilddate = | numberrebuilt = | whytetype = | uicclass = 1′D h2 | DRGtype = | driver = | gauge = | leadingdiameter = 1000 mm | driverdiameter = 1600 mm | tenderdiameter = 1000 mm | carrydiameter = | minimumcurve = | wheelbase = | wheelspacing = | engine total = 9700 mm | leading = | drivers = | coupled = | trailing = | tender total = | tendertruck = | tenderbogie = 1900 mm | wheelbasewithtender = | racksystem = | pivotcentres = | length = | over headstocks = | over buffers = | width = | height = 4475 mm | frametype = | axleload = | leadingbogie/pony= | coupled all = | coupled 1 = | coupled 2 = | coupled 3 = | coupled 4 = | trail bogie/pony= | tenderbogieload = | tenderaxle = | weightondrivers = | emptyweight = | serviceweight = | locoweight = | tenderweight = | locotenderweight = | tendertype = | fueltype = | fuelcap = | watercap = 27.5 - | tendercap = | sandcap = | fireboxtype = | firearea = | boiler = | boilertype = | pitch = | diameterinside = | lengthinside = | smalltubediameter= | largetubediameter= 133 mm, 35 off | boilerpressure = 16 bar | safetyvalvetype = | feedwaterheater = | fireboxarea = | tubearea = | archarea = | fluearea = | tubesandflues = | totalsurface = | superheatertype = | superheaterarea = | cylindercount = Two, outside | cylindersize = 600 x | cylinderpressure = | valvegear = | valvetype = | valvetravel = | valvelap = | valvelead = | transmission = | trainheating = | locobrakes = | locobrakeforce = | trainbrakes = | safety = | coupling = | maxspeed = 100 km/h | indicatedpower = 2380 PS | poweroutput = | tractiveeffort = | factorofadhesion = | operator = Deutsche Reichsbahn (GDR) | operatorclass = | powerclass = | numinclass = | fleetnumbers = 25 001 (→ 25 1002), 25 1001 | officialname = | nicknames = | axleloadclass = | locale = | deliverydate = | firstrundate = | lastrundate = | retiredate = 1967 | withdrawndate = | preservedunits = | restoredate = | scrapdate = | currentowner = | disposition = | notes = The steam locomotives of DR Class 25.10 were passenger train locomotives built for the Deutsche Reichsbahn (DR) in East Germany after World War II.

History

The Class 25.10 was developed by the DR in 1954. It was built primarily with heavy passenger trains in mind, but was also intended to handle goods traffic. The first of the two trials locomotives to be manufactured was equipped with a mechanical stoker for lump coal. It was given the operating number 25 001. The second example had coal dust firing and was allocated number 25 1001. Only the coal dust fired vehicle was convincing enough, which resulted in the conversion of the first engine to coal dust firing as well in 1958 and its renumbering to 25 1002. The engines did not go into full production however, because the DR Class 23.10 had been designed and built. The makers were the VEB Lokomotivbau "Karl Marx" in Potsdam-Babelsberg.

The two engines were mainly stationed at Arnstadt, where they hauled passenger trains to Weimar, Saalfeld, Erfurt and Meiningen. For a short time, from 1960 to 1962, the engines were homed at Senftenberg depot. However the numerous cracks in the plate frame often required repair and the locomotives were frequently out of service. The 25.10s were retired as early as 1964 and scrapped at Nordhausen in 1968.

Number 25 1001 was equipped with a coal dust tender of Class 2′2′ T 27.5 Kst. Number 25 001 had a 2′2′ T 30 tender, which was replaced in 1958 by the 2′2′ T 28 Kst coal dust tender of 44 054, when it was converted to coal dust firing. The locomotive was renumbered to 25 1002.

References

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