Staatsspoorwegen class 500
Staatsspoorwegen class BB10
The locomotive later known as BB10 was the first Mallet in service in Indonesia. Mainly built for the hilly and winding Bogor-Bandung line, it was a tank locomotive with two two-axle driver groups and a trailing axle. The first eight were delivered by Hartmann of Chemnitz in 1899 and were numbered 501 to 508. Originally coal-fired, they had an output of 465 hp.
Hartmann delivered four more in 1907 which were numbered 509 to 512 and were intended for work on other lines. Another four came from BMAG of Berlin in 1908 which became numbers 513 to 516. Later they were converted to burn oil and the Japanese gave them the designation BB10. Only BB10 12 was preserved and is on display in the Indonesian Railway Museum at Ambarawa.
Technical data
General
- Built
- 1899-1908
- Manufacturers
- Hartmann, BMAG
- Wheel arrangement
- 0-4-4-2T
- Gauge
- 1,067 mm (Cape gauge)
Dimensions and weights
- Length
- 10.56 m
- Wheelbase
- 6.00 m
- Empty mass
- 32.3 t
- Service mass
- 42.8 t
- Adhesion mass
- 35.3 t
- Rigid wheelbase
- 1.40 m
- Axle load
- 8.9 t
- Water capacity
- 4,000 l
- Fuel capacity
- 1.4 t (coal)
Boiler
- Grate area
- 1.45 m²
- Firebox surface
- 7.74 m²
- Tube heating surface
- 93.7 m²
- Evaporative heating surface
- 101.44 m²
- Total heating surface
- 101.4 m²
Power plant
- Driver diameter
- 1,102 mm
- Boiler pressure
- 12 bar
- Expansion type
- compound
- Cylinders
- four, HP: 300 x 510 mm and LP: 460 x 510 mm
Power
- Power source
- steam
- Indicated power
- 342 kW (465 PS)
- Top speed
- 50 km/h
- Starting effort
- 59.6 kN
- Starting effort simple
- 71.5 kN
Calculated values
- Factor of adhesion
- 1 : 5.81
- Optimal speed
- 35 km/h
- Power-to-weight ratio
- 8.0 kW/t
- Heating Surface Equivalent
- 140.1 m²
- Cylinder volume/HSE
- 1 : 1,119.28
- Adhesive weight/Total
- 1 : 1.21
- Tractive force/Heating surface
- 1 : 12.27
- Grate area/Heating surface
- 1 : 69.96
- Firebox/Tube surface
- 1 : 12.11
