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ELNA 6
German Reichsbahn classes 9229 and 9264 and French State Railway 040 TX
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Germany | 1922
116 produced
No. 4 of the Dampfbahn Fränkische Schweiz at Ebermannstadt
No. 4 of the Dampfbahn Fränkische Schweiz at Ebermannstadt
Rainer Haufe

In the twenties, the ELNA (Engerer Lokomotiv-Normen-Ausschuß - Special locomotive standards committee) designed a range of standard locomotives to be built for private and light railways. The ELNA 6 was the heaviest of these types and had the wheel arrangement 0-8-0T. With a top speed of 40 km/h, it was intended for all kinds of traffic on secondary lines and also for shunting. With a wheelbase of less than 4.5 meters, it did not need axles with lateral play.

Between 1922 and 1946, a total of 116 were built by different manufacturers since they were included in the war locomotive program as KDL 4. In this context, also Schneider of Le Creusot in France had to manufacture these and also continued production after the war for a total of 67. Thanks to the liberation of France, all 67 could stay in the country, came to the SNCF and were designated 040 TX.

In Germany, there was a total of four different variants. The standard type was offered in a cheaper saturated and a more powerful superheated variant, called ELNA 6 N and ELNA 6 H. Krauss of Munich could realize a cheaper production by using tooling already existing for other locomotives, so the seven locomotives resembled some other types which were in use in Bavaria. They also had larger side water tanks instead of the well tanks of the standard variant and were heavier. Additionally, seven of the locomotives produced by Henschel were of an augmented type that had a higher boiler pressure, larger cylinders and a larger superheater. These also had side tanks and were even heavier than the Krauss type. Later some got wheels with a diameter of 1.200 instead of 1.100 mm.

As the customers were private and light railways, most of them only got one to three locomotives. The largest customer was the Halle-Hettstedt Railway Company that got seven of which four came from Krauss. After the war, the West German locomotives remained in private ownership, while the East German ones were taken over by the Reichsbahn. Most were put into class 9264, but three with a counter-pressure brake became class 9229. Today three are preserved.

VariantELNA 6 NELNA 6 HKraussaugmented
General
Built1922-1946
ManufacturerBMAG, Fablok, Hanomag, Hohenzollern, O&K, VulcanKraussHenschel
Axle config0-8-0T (Eight-coupled) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length35 ft 5 3/16 in34 ft 5 3/8 in35 ft 1 5/8 in
Wheelbase14 ft 1 5/16 in13 ft 3 7/16 in14 ft 0 7/8 in
Rigid wheelbase14 ft 1 5/16 in13 ft 3 7/16 in14 ft 0 7/8 in
Empty weight92,594 lbs95,240 lbs101,192 lbs115,522 lbs
Service weight119,049 lbs121,695 lbs129,632 lbs143,080 lbs
Adhesive weight119,049 lbs121,695 lbs129,632 lbs143,080 lbs
Axle load29,762 lbs30,424 lbs32,187 lbs35,715 lbs
Water capacity1,585 us gal1,717 us gal
Fuel capacity4,079 lbs (coal)4,409 lbs (coal)
Boiler
Grate area19.8 sq ft21.5 sq ft23.6 sq ft
Firebox area96.3 sq ft
Tube heating area1,014 sq ft
Evaporative heating area1,259.4 sq ft948.3 sq ft1,110.3 sq ft1,078.5 sq ft
Superheater area333.7 sq ft331.5 sq ft398.3 sq ft
Total heating area1,259.4 sq ft1,282 sq ft1,441.8 sq ft1,476.8 sq ft
VariantELNA 6 NELNA 6 HKraussaugmented
Power Plant
Driver diameter43.31 in47.24 in
Boiler pressure174 psi188 psi
Expansion typesimple
Cylinderstwo, 18 7/8 x 21 5/8 intwo, 20 1/2 x 21 5/8 intwo, 19 11/16 x 21 5/8 intwo, 21 5/8 x 21 5/8 in
Power
Power sourcesteam
Estimated power671 hp (500 kW)771 hp (575 kW)838 hp (625 kW)905 hp (675 kW)
Optimal speed16 mph19 mph17 mph
Top speed25 mph
Starting effort26,411 lbf30,993 lbf28,656 lbf34,435 lbf
Calculated Values
steam locomotive
passenger
freight
tank locomotive
secondary line
last changed: 12/2024
No. 104 of the Halle-Hettstedt railway on a Krauss factory photo
No. 104 of the Halle-Hettstedt railway on a Krauss factory photo
Krauss
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