Technical specifications

Feature	LOCOMOTIVE 231 G 558	TENDER 22 C 367
Weight in working order in tonnes	104	60
Length in metres	13,665	8,65
Speed when in service with S.N.C.F.	130 Km/h	12 tonnes
Current speed limit	100 Km/h	22 m3
Coal consumption (tonnes per 100 km)	1,5 à 2
Water consumption (m3 per 100 km)	10 à 15
Power output (hp)	2500

Performance

Speed when in service with S.N.C.F: 130 km/h - Current speed limit: 100 km/h
On its trials this machine easily reached 155 km/h and could have exceeded this without difficulty.

Power output


At the drawbar	Between 2,000 and 2,500 horse power
At the wheel rim	3,000 horsepower
Rate of evaporation of boiler	15,000 litres/hour.
Coal consumption	1,500 to 2,000 kg per 100 km
Trailing load	600 tonnes at 120 km/h on level track 500 tonnes at 130 km/h on level track. 600 tonnes: 13 passenger coaches 500 tonnes: 11 passenger coaches

Boiler

Section: 1.68 m.
Heating surface: 197.80 m2.
Superheating surface: 76.60 m2.
Number of fire tubes (50 x 55): 119.
Number of flues (125 x 133): 30.
Schmidt 30-element superheater: size of superheaters (31 X 38).
Two-section steam collector.
Extended smoke box and arch.
Firebox made of welded steel.
Ash pan with side pockets.
ACFI 230 RI pump.
2 standard safety valves with two stages of opening of 100 mm.
KILCHAP KK 125 exhaust.
Bernard axlebox liners.
Water temperature at 16 bar: 200°C.
Temperature of superheated steam: above 300°C.
Length of tubes: 6 m.
Boiler made of steel plates 12, 14 and 16 mm thick.
Grate area: 4.27 m2.
Feed:
- one Friedmann injector working with direct steam
- one ACFI pump to heat the water by means of exhaust steam.
Water capacity of boiler: 8,500 litres.
Armand water treatment (Armand Total Treatment) composed of sodium carbonate, caustic soda and tannin.
Coal combustion activated by the double Kilchap exhaust situated under the double chimney.

Frame

Strongly cross-braced frame made of 28mm sheet metal.

Running gear

A front bogie comprising a truck with a central pivot with initial centring by small rods.
Timken roller bearing axle boxes on the two axles with spoked wheels of 0.96 m diameter.
Three driven axles with 1.94m diameter wheels and regulated axleboxes fitted with pressure greasing.
1 Bissel truck at the rear with 1.23m diameter wheels.

Cylinders and valve gear

2 high-pressure cylinders (16 bar), 420 mm bore and 650 mm stroke.
2 low-pressure cylinders (6 bar), 640 mm bore and 650 mm stroke.
Steam distribution using the Dabeg system with valves with oscillating cams, double seat valves with a diameter of 185 mm for the HP and 240 mm for the LP.
Valve lift HP 24 mm, LP 28 mm
Valves made of nickel chrome steel.
Weight of the valves about 4 kg with stem and spring.
Control mechanism for steam distribution by Walschaerts valve gear.
Control of the power by the regulator opening the connection between the boiler and cylinders and by the valve gear which varies the opening of the valves in proportion to the stroke of the piston.