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{{Infobox locomotive
| name = DRB Class 23 DR Class 23.0 DR Class 35.20
| bgcolor = A00
| color = FFF
| image =
| alt =
| caption =
| powertype = Steam
| designer =
| builder = [[Schichau-Werke]]
| ordernumber =
| serialnumber = 3443–3444
| buildmodel =
| builddate = 1941
| totalproduction = 2
| rebuilder =
| rebuilddate =
| numberrebuilt =
| whytetype = {{whyte|2-6-2}}
| uicclass = 1′C1′ h2
| DRGtype = P 35.18
| driver = 
| gauge = {{track gauge|sg}}
| leadingdiameter = {{convert|1000|mm|in|frac=8|abbr=on}}
| driverdiameter = {{convert|1750|mm|in|frac=8|abbr=on}}
| trailingdiameter = {{convert|1250|mm|in|frac=8|abbr=on}}
| tenderdiameter = {{convert|1000|mm|in|frac=8|abbr=on}}
| carrydiameter =
| minimumcurve =
| wheelbase =
| wheelspacing = {{ubl|{{convert|3100|mm|ftin|frac=8|abbr=on}} +|{{convert|2050|mm|ftin|frac=8|abbr=on}} +|{{convert|2050|mm|ftin|frac=8|abbr=on}} +|{{convert|3500|mm|ftin|frac=8|abbr=on}} {{=}}}}
| engine total = {{convert|10700|mm|ftin|frac=8|abbr=on}}
| leading =
| drivers = 
| coupled = 
| trailing =
| tender total = {{ubl|{{convert|1900|mm|ftin|frac=8|abbr=on}} +|{{convert|1900|mm|ftin|frac=8|abbr=on}} +|{{convert|1900|mm|ftin|frac=8|abbr=on}} {{=}}|{{convert|5700|mm|ftin|frac=8|abbr=on}}}}
| tendertruck = 
| tenderbogie = 
| wheelbasewithtender =
| racksystem =
| pivotcentres = 
| length =
| over headstocks = {{convert|21,640|mm|ftin|frac=8|abbr=on}}
| over buffers = {{convert|22,940|mm|ftin|frac=8|abbr=on}}
| width =
| height = {{convert|4550|mm|ftin|frac=8|abbr=on}}
| frametype =
| axleload = {{convert|18|t|abbr=on}}
| leadingbogie/pony= 
| coupled all = 
| coupled 1 = 
| coupled 2 = 
| coupled 3 = 
| trail bogie/pony= 
| tenderbogieload = 
| tenderaxle = 
| weightondrivers = {{convert|53.92|t|abbr=on}}
| emptyweight = {{convert|80.14|t|abbr=on}}
| serviceweight = {{convert|88.32|t|abbr=on}}
| locoweight =
| tenderweight =
| locotenderweight = {{convert|148.2|t|abbr=on}}
| tendertype = 2′2′ T 26
| fueltype = Coal
| fuelcap = {{convert|8|t|abbr=on}}
| watercap = {{convert|26|m3|impgal usgal|abbr=on}}
| tendercap =
| sandcap =
| fireboxtype = 
| firearea = {{convert|3.9|m²|abbr=on}}
| boiler = 
| boilertype = 
| pitch = {{convert|3050|mm|ftin|frac=8|abbr=on}}
| diameterinside =
| lengthinside = {{convert|5200|mm|ftin|frac=8|abbr=on}}
| smalltubediameter= {{convert|54|mm|in|frac=8|abbr=on}}, 113 off
| largetubediameter= {{convert|133|mm|in|frac=8|abbr=on}}, 35 off
| boilerpressure = {{convert|16|bar|kgf/cm2 psi|sigfig=3|abbr=on}}
| safetyvalvetype = 
| feedwaterheater =
| fireboxarea = {{convert|15.9|m²|abbr=on}}
| tubearea = {{convert|90.4|m²|abbr=on}}
| archarea =
| fluearea = {{convert|71.3|m²|abbr=on}}
| tubesandflues =
| totalsurface = {{convert|177.6|m²|abbr=on}}
| superheatertype =
| superheaterarea = {{convert|64.1|m²|abbr=on}}
| cylindercount = Two, outside
| cylindersize = {{convert|550|x|660|mm|in|frac=16|abbr=on}}
| cylinderpressure =
| valvegear = [[Walschaerts valve gear|Heusinger (Walschaerts)]]
| valvetype =
| valvetravel =
| valvelap =
| valvelead =
| transmission =
| trainheating = Steam
| locobrakes =
| locobrakeforce =
| trainbrakes =
| safety =
| coupling =
| maxspeed = {{convert|110|km/h|abbr=on}}
| indicatedpower = {{convert|1500|PS|kW hp|sigfig=3|abbr=on}}
| poweroutput =
| tractiveeffort =
| factorofadhesion =
| operator = {{ubl|[[Deutsche Reichsbahn]]|[[Deutsche Reichsbahn (DDR)]]}}
| operatorclass =
| powerclass =
| numinclass =
| fleetnumbers = {{ubl|23 001 – 23 002|35 2001-2 from 1970}}
| officialname =
| nicknames =
| axleloadclass =
| locale =
| deliverydate =
| firstrundate =
| lastrundate =
| retiredate = 1975
| withdrawndate =
| preservedunits =
| restoredate =
| scrapdate =
| currentowner =
| disposition =
| notes =
}}
The German '''Class 23''' (''Baureihe 23'' or ''BR 23'') engines of the [[Deutsche Reichsbahn-Gesellschaft|Deutsche Reichsbahn]] (''DRG'') were standard (''[[Einheitsdampflokomotive|Einheitslokomotive]]n'') steam engines that were conceived as a replacement for the [[Prussian P 8]] by the [[Schichau-Werke|Schichau]] Works. They were given the same [[boiler]] as the [[DRG Class 50|Class 50]]s which were developed in parallel and, like them, the newly developed 2'2' T 26 [[Tender (locomotive)|tender]] with its front wall that protected train crews during reverse running.

In 1941 the two prototypes were built and delivered. The procurement of 800 locomotives had been planned, however the constraints of the [[Second World War]] meant that they never entered full production.

After the war the two locomotives, with operating numbers 23 001 and 23 002, went to the [[Deutsche Reichsbahn (East Germany)|DR]] in [[East Germany]] and were variously stabled in [[Berlin]], [[Brandenburg an der Havel]], [[Jüterbog]] and [[Halle, Saxony-Anhalt|Halle]]. In 1961, number 23 001 was given a ''[[Rekolok|Reko]]'' [[boiler]] with [[Firebox (steam engine)#Combustion chamber|combustion chamber]], developed for the [[DRG Class 50|Class 50]]. In 1970 the locomotive was given [[electronic data processing|EDP]] number 35 2001–2. Number 23 002 was to be reconstructed, but was retired however in 1967 due to damage to the [[Frame (locomotive)|frame]] and scrapped.
Number 23 001 was scrapped in 1975 in Cottbus, as it could no longer serve any useful purpose.

After the war, the design of these Class 23 locomotives formed the basis for the new [[DB Class 23]] and [[DR Class 23.10]] locomotives which received the same class designation.

==See also==
* [[List of DRG locomotives and railbuses]]

==References==
{{Reflist}}
*{{Hütter-01bis45|page=213}}
*{{Weisbrod-EFA1.1|pages=174–177}}

{{DRG locomotives}}
{{Authority control}}

[[Category:Steam locomotives of Germany|23]]
[[Category:2-6-2 locomotives]]
[[Category:Deutsche Reichsbahn-Gesellschaft locomotives|23]]
[[Category:Railway locomotives introduced in 1941]]
[[Category:Passenger locomotives]]
[[Category:Standard-gauge locomotives of Germany]]
[[Category:1′C1′ h2 locomotives]]
[[Category:Schichau-Werke locomotives]]

DRG Class 23 - Revision history

imported>Iain Bell: add reference