DRG Class 05

{{Short description|German steam locomotive class (1935–1958)}}

{{More citations needed|date=December 2016}}

{{Infobox locomotive

| name = DRG Class 05
DB Class 05

| bgcolor = A00

| color = FFF

| image = Dampflokomotive der Baureihe 05 Der neue Brockhaus 1938.jpg

| alt =

| caption = 05 002 at Brockhaus, 1938

| powertype = Steam

| designer =

| builder = Borsig Lokomotiv Werke (Hennigsdorf)

| ordernumber =

| serialnumber = 14552–14553, 14555

| buildmodel =

| builddate = 1935 (2), 1937 (1)

| totalproduction = 3

| rebuilder =

| rebuilddate =

| numberrebuilt =

| whytetype = {{whyte|4-6-4}}

| uicclass = 2{{prime}}C2{{prime}} h3

| DRGtype = S 37.19

| driver = Divided: inside cylinder to first coupled axle, outside cylinders to second

| gauge = {{track gauge|sg}}

| leadingdiameter = {{convert|1100|mm|frac=8|abbr=on}}

| driverdiameter = {{convert|2300|mm|frac=8|abbr=on}}

| trailingdiameter = {{convert|1100|mm|frac=8|abbr=on}}

| tenderdiameter = {{convert|1100|mm|frac=8|abbr=on}}

| carrydiameter =

| minimumcurve =

| wheelbase =

| wheelspacing = {{ubl|{{convert|2350|mm|ftin|frac=8|abbr=on}} +|{{convert|2200|mm|ftin|frac=8|abbr=on}} +|{{convert|2550|mm|ftin|frac=8|abbr=on}} +|{{convert|2550|mm|ftin|frac=8|abbr=on}} +|{{convert|2250|mm|ftin|frac=8|abbr=on}} +|{{convert|2000|mm|ftin|frac=8|sigfig=3|abbr=on}} {{=}} *}}

| engine total = {{convert|13900|mm|ftin|frac=8|sigfig=3|abbr=on}}

| leading =

| drivers =

| coupled =

| trailing =

| tender total = {{ubl|{{convert|1800|mm|ftin|frac=8|abbr=on}} +|{{convert|1450|mm|ftin|frac=8|abbr=on}} +|{{convert|1325|mm|ftin|frac=8|abbr=on}} +|{{convert|1325|mm|ftin|frac=8|abbr=on}} {{=}}|{{convert|5900|mm|ftin|frac=8|abbr=on}}}}

| tendertruck =

| tenderbogie =

| wheelbasewithtender = {{convert|22075|mm|ftin|frac=8|sigfig=3|abbr=on}}

| racksystem =

| pivotcentres =

| length =

| over couplers =

| over headstocks = {{convert|24965|mm|ftin|frac=8|abbr=on}}

| over buffers = {{convert|26265|mm|ftin|frac=8|abbr=on}}

| width =

| height = {{convert|4550|mm|ftin|frac=8|abbr=on}}

| frametype =

| axleload = {{ubl|001–002: {{convert|19.2|t|abbr=on}}|003: {{convert|19.6|t|abbr=on}}, later {{convert|18.6|t|abbr=on}}}}

| leadingbogie/pony=

| coupled all =

| coupled 1 =

| coupled 2 =

| coupled 3 =

| trail bogie/pony=

| tenderbogieload =

| tenderaxle =

| weightondrivers = {{ubl|001–002: {{convert|57.6|t|abbr=on}}|003: {{convert|59.0|t|abbr=on}}, later {{convert|56.0|t|abbr=on}}}}

| emptyweight = {{ubl|001–002: {{convert|118.5|t|abbr=on}}|003: {{convert|118.6|t|abbr=on}}, later {{convert|114.0|t|abbr=on}}}}

| serviceweight = {{ubl|001–002: {{convert|129.9|t|abbr=on}}|003: {{convert|129.5|t|abbr=on}}, later {{convert|124.0|t|abbr=on}}}}

| locoweight =

| tenderweight =

| locotenderweight =

| tendertype = {{ubl|001–002: 2{{prime}}3 T 37 St|003: 2{{prime}}3K T 35, later 2{{prime}}3 T 38.5}}

| fueltype = Coal (Coal dust for 003 1937–1944)

| fuelcap = {{ubl|001–002: {{convert|10|t|abbr=on}}|003: {{convert|10|t|abbr=on}}, later {{convert|12|t|abbr=on}}}}

| watercap = {{ubl|001–002: 2{{prime}}3 T 37 St|003: 2{{prime}}3K T 35, later 2{{prime}}3 T 38.5}}{{convert|37|m3|impgal usgal|abbr=on}}

| tendercap =

| sandcap =

| fireboxtype =

| firearea = {{ubl|001–002: {{convert|4.7|m2|abbr=on}}|003: {{convert|4.40|m2|abbr=on}}}}

| boiler =

| boilertype =

| pitch = {{convert|3170|mm|ftin|frac=8|abbr=on}}

| diameterinside =

| lengthinside = {{ubl|001–002: {{convert|7000|mm|ftin|frac=8|abbr=on}}|003: {{convert|5500|mm|ftin|frac=8|abbr=on}}}}

| smalltubediameter={{ubl|001–002: {{convert|70|mm|in|frac=8|abbr=on}}, 106 off|003: {{convert|54|mm|in|frac=8|abbr=on}}, 137 off}}

| largetubediameter= {{ubl|001–002: {{convert|171|mm|in|frac=8|abbr=on}}, 24 off|003: {{convert|143|mm|in|frac=8|abbr=on}}, 35 off}}

| boilerpressure = {{convert|20|bar|kgf/cm2 psi|sigfig=3|abbr=on}} (reduced to {{convert|16|bar|kgf/cm2 psi|sigfig=3|abbr=on}} in 1950)

| safetyvalvetype =

| feedwaterheater =

| fireboxarea = {{ubl|001–002: {{convert|18.5|m2|abbr=on}}|003: {{convert|22.66|m2|abbr=on}}}}

| tubearea = {{ubl|001–002: {{convert|151.3|m2|abbr=on}}|003: {{convert|123.52|m2|abbr=on}}}}

| archarea =

| fluearea = {{ubl|001–002: {{convert|86.2|m2|abbr=on}}|003: {{convert|81.72|m2|abbr=on}}}}

| tubesandflues =

| totalsurface = {{ubl|001–002: {{convert|256.0|m2|abbr=on}}|003: {{convert|227.95|m2|abbr=on}}}}

| superheatertype =

| superheaterarea = {{ubl|001–002: {{convert|90.0|m2|abbr=on}}|003: {{convert|81.9|m2|abbr=on}}}}

| cylindercount = Three

| cylindersize = {{convert|450|x|660|mm|frac=16|abbr=on}}

| hpcylindersize =

| lpcylindersize =

| cylinderpressure =

| valvegear = Heusinger/Walschaerts

| valvetype =

| valvetravel =

| valvelap =

| valvelead =

| transmission =

| trainheating =

| locobrakes =

| locobrakeforce =

| trainbrakes =

| safety =

| coupling =

| maxspeed = {{ubl|Service: {{convert|175|km/h|mph|0|abbr=on}}|Test: {{convert|200.4|km/h|mph|1|abbr=on}}}}

| indicatedpower = {{unbulleted list|001–002: {{convert|2360|PS|kW hp|abbr=on}}|003: {{convert|2400|PS|kW hp|sigfig=3|abbr=on}}}}

| poweroutput =

| tractiveeffort =

| factorofadhesion =

| operator =

| operatorclass =

| powerclass =

| numinclass =

| fleetnumbers = 05 001 – 05 003

| officialname =

| nicknames =

| axleloadclass =

| locale =

| deliverydate =

| firstrundate =

| lastrundate =

| retiredate = 1958

| withdrawndate =

| preservedunits =

| restoredate =

| scrapdate =

| currentowner =

| disposition = One preserved, remainder scrapped

| notes = * For 05 003 in cab-forward configuation, values should be read in reverse order

}}

The Deutsche Reichsbahn's Class 05 was a German class of three express passenger steam locomotives of 4-6-4 wheel arrangement in the Whyte notation, or 2{{prime}}C2{{prime}} h3 in the UIC notation used in continental Europe. They were part of the DRG's standard locomotive (Einheitslokomotive) series.