DRG Class 03
Class of 298 German two-cylinder 4-6-2 locomotives
title: "DRG Class 03" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["steam-locomotives-of-germany", "4-6-2-locomotives", "deutsche-reichsbahn-gesellschaft-locomotives", "borsig-locomotives", "krupp-locomotives", "henschel-locomotives", "railway-locomotives-introduced-in-1930", "berliner-locomotives", "standard-gauge-locomotives-of-germany", "standard-gauge-locomotives-of-poland", "2′c1′-h2-locomotives", "passenger-locomotives"] description: "Class of 298 German two-cylinder 4-6-2 locomotives" topic_path: "geography/germany" source: "https://en.wikipedia.org/wiki/DRG_Class_03" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Class of 298 German two-cylinder 4-6-2 locomotives ::
::data[format=table title="Infobox locomotive"]
| Field | Value |
|---|---|
| name | DRG Class 03 |
| DB Class 003 | |
| PKP class Pm2 | |
| bgcolor | A00 |
| color | FFF |
| image | 20020516.11.Dampflokfest.-011.jpg |
| caption | 03 001 at the 2002 Dresden Steam Locomotive Festival |
| powertype | Steam |
| builder | |
| builddate | 1930–1937 |
| totalproduction | 298 |
| whytetype | |
| uicclass | 2′C1′ h2 |
| DRGtype | |
| driver | |
| gauge | |
| leadingdiameter | |
| driverdiameter | 2000 mm |
| trailingdiameter | 1250 mm |
| tenderdiameter | 1000 mm |
| engine total | 12000 mm |
| tender total | 5700 mm |
| tendertruck | |
| tenderbogie | 1900 mm |
| wheelbasewithtender | 20225 mm |
| wheelspacing | |
| over buffers | 23905 mm |
| over headstocks | 22605 mm |
| height | 4550 mm |
| axleload | |
| leadingbogie/pony | |
| coupled all | |
| coupled 1 | |
| coupled 2 | |
| coupled 3 | |
| trail bogie/pony | |
| tenderbogieload | |
| tenderaxle | |
| weightondrivers | |
| emptyweight | |
| serviceweight | |
| tendertype | |
| fueltype | Coal |
| fuelcap | 10 t |
| watercap | 30 or |
| fireboxtype | |
| firearea | |
| boiler | |
| boilertype | |
| pitch | 3100 mm |
| lengthinside | 6800 mm |
| smalltubediameter | |
| largetubediameter | 171 mm, 20 off |
| boilerpressure | 16.0 bar |
| safetyvalvetype | |
| totalsurface | 202.22 or |
| tubearea | 116.50 or |
| fluearea | 69.62 m2 |
| fireboxarea | 16.10 m2 |
| superheaterarea | |
| cylindercount | Two, outside |
| cylindersize | 570 x |
| on 03 001-003 originally: | |
| 600 x | |
| valvegear | outside Walschaerts |
| trainheating | Steam |
| locobrakes | automatic, single-chamber Knorr compressed air brakes to 03 162 |
| coupled and bogie wheels, one-sided, from 03 163 | |
| both sides of coupled wheels and one-sided on trailing wheels | |
| maxspeed | |
| indicatedpower | 1970 PS |
| tractiveeffort | 161.8 kN |
| fleetnumbers | 03 001 – 03 298 |
| :: |
| name = DRG Class 03 DB Class 003 PKP class Pm2 | bgcolor = A00 | color = FFF | image = 20020516.11.Dampflokfest.-011.jpg | alt = | caption = 03 001 at the 2002 Dresden Steam Locomotive Festival | powertype = Steam | designer = | builder = | ordernumber = | serialnumber = | buildmodel = | builddate = 1930–1937 | totalproduction = 298 | rebuilder = | rebuilddate = | numberrebuilt = | website = | whytetype = | uicclass = 2′C1′ h2 | DRGtype = | driver = | gauge = | leadingdiameter = | driverdiameter = 2000 mm | trailingdiameter = 1250 mm | tenderdiameter = 1000 mm | minimumcurve = | wheelbase = | engine total = 12000 mm | leading = | coupled = | trailing = | tender total = 5700 mm | tendertruck = | tenderbogie = 1900 mm | wheelbasewithtender = 20225 mm | wheelspacing = | length = | over buffers = 23905 mm | over headstocks = 22605 mm | width = | height = 4550 mm | frametype = | axleload = | leadingbogie/pony= | coupled all = | coupled 1 = | coupled 2 = | coupled 3 = | trail bogie/pony= | tenderbogieload = | tenderaxle = | weightondrivers = | emptyweight = | serviceweight = | locoweight = | tenderweight = | locotenderweight = | tendertype = | fueltype = Coal | fuelcap = 10 t | watercap = 30 or | tendercap = | sandcap = | fireboxtype = | firearea = | boiler = | boilertype = | pitch = 3100 mm | diameterinside = | lengthinside = 6800 mm | smalltubediameter= | largetubediameter= 171 mm, 20 off | boilerpressure = 16.0 bar | safetyvalvetype = | feedwaterheater = | totalsurface = 202.22 or | tubearea = 116.50 or | archarea = | fluearea = 69.62 m2 | tubesandflues = | fireboxarea = 16.10 m2 | superheatertype = | superheaterarea = | cylindercount = Two, outside | cylindersize = 570 x on 03 001-003 originally: 600 x | cylinderpressure = | valvegear = outside Walschaerts | valvetype = | valvetravel = | valvelap = | valvelead = | transmission = | trainheating = Steam | locobrakes = automatic, single-chamber Knorr compressed air brakes to 03 162 coupled and bogie wheels, one-sided, from 03 163 both sides of coupled wheels and one-sided on trailing wheels | locobrakeforce = | trainbrakes = | safety = | coupling = | maxspeed = | indicatedpower = 1970 PS | poweroutput = | tractiveeffort = 161.8 kN | factorofadhesion = | operator = | operatorclass = | powerclass = | numinclass = | fleetnumbers = 03 001 – 03 298 | officialname = | nicknames = | axleloadclass = | locale = | deliverydate = | firstrundate = | lastrundate = | retiredate = | withdrawndate = | preservedunits = | restoredate = | scrapdate = | currentowner = | disposition = | notes = The Class 03 steam engines were standard express train locomotives (Einheitslokomotiven) in service with the Deutsche Reichsbahn.
History
The Class 03 engines were built between 1930 and 1938 as express train locomotives for routes that were only suitable for axle loads of up to 18 tonnes. 298 examples of this engine, whose construction was based on the Class 01, were built by the firms of Borsig, Krupp, Henschel, and Schwartzkopff.
Its reduced weight was achieved by the use of a light sectional frame, smaller boiler and smaller cylinders. From engine number 03 123 onwards the pumps were located in the centre of the locomotive and from number 03 163 the locos had larger leading wheels.
Locomotive number 03 154 was equipped with a parabolic smokebox door, a tapered driver's cab and driving gear cover plates. Number 03 193 was given a wine-red, streamlined, full covering and a 2′3 T 37 St tender, in order to replace the Class 05. 03 204 and 03 205 had driving gear cover plates for experimental purposes. Locomotive numbers 03 175 and 03 207 had Lentz valve gear, also as an experiment.
Until 1959, 145 Class 03 locomotives were in the Deutsche Bundesbahn's operating fleet, of which 62 engines (03 005 to 03 122) had air and feed pumps on the smokebox, small leading wheels (850 mm diameter) and a top speed of 120 km/h, 16 machines (03 127 to 03 160) had air and feed pumps between the middle and rear driving wheels, small leading wheels (850 mm diameter) and a top speed of 120 km/h and 67 engines (03 164 to 03 296) had air and feed pumps between the middle and rear driving wheels, scissor-block brakes (Scherenklotzbremsen), large leading wheels (1,000 mm diameter) and a top speed of 130 km/h.
In 1968 there were still 45 units, now designated as Class 003, remaining in the operational fleet. They were stabled at the following locomotive sheds: two at the Braunschweig shed, six at Bremen Main Station, 13 at Hamburg-Altona, one at Husum, 16 in Mönchengladbach and seven at Ulm.
The last ten locomotives of Class 003 were on duty from 1971 at Ulm; in 1972 the last ones, nos. 003 088, 003 131 and 003 268, were withdrawn from service.
The DR in East Germany had 86 engines in its fleet. From 1962 they equipped their vehicles with mixer preheaters.
::figure[src="https://upload.wikimedia.org/wikipedia/commons/d/da/Pm2_pacific_locomotive_1976.jpg" caption="An 03 running in Poland as PKP No. Pm2-34, today preserved at Warsaw, near Toruń with a northbound freight; 1976"] ::
35 03 pacifics went to Poland after World War 2, along with ten streamlined 03.10s. The Polish version of the Class 03, the Pm2 (running number 34), can be seen at the railway museum in Warsaw.
The locomotives of this class had 2′2 T 30, 2′2′ T 32 and 2′2′ T 34 tenders.
Literature
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