Bergslagernas 2-6-2 Locomotives in Sweden

Class Details by Steve Llanso of Sweat House Media

Class Y3 (Locobase 4067)

Originally built for this privately run railroad, the Y3 design proved attractive for other railroads in Sweden.The Hassleholm-Markaryds Jarnvag (HMJ) bought some in 1921, followed by the Landsrona & Halsingsborgs (L&HJ) in 1928-1929. Nationalization in the early 1930s meant a gradual migration of these engines to the SJ (Statens Jarnvagar) over the next decade.

Those that had been counter-balanced for a 12.5 metric ton axle loading (27,558 lb) were eventually rebalanced to the 14.5-ton standard represented by the specifications. The last of these engines were withdrawn from SJ service by 1970.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID4067
RailroadBergslagernas (BJ)
Number in Class25
Road Numbers
Number Built25
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)31,967 / 14,500
Weight on Drivers (lbs / kg)95,460 / 43,300
Engine Weight (lbs / kg)136,686 / 62,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)136,686 / 62,000
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.20 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)53 / 26.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)55.10 / 1400
Boiler Pressure (psi / kPa)156 / 10.80
High Pressure Cylinders (dia x stroke) (in / mm)18.5" x 24" / 470x610
Tractive Effort (lbs / kg)19,767 / 8966.17
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.83
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)19.36 / 1.80
Evaporative Heating Surface (sq ft / m2)
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)
Evaporative Heating Surface/Cylinder Volume
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3020
Same as above plus superheater percentage3020
Same as above but substitute firebox area for grate area
Power L1
Power MT

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