SJ class Ma

SJ class Ma

SJ class Ma

In the beginning of the 1950's traffic intensity grew rapidly and the demand for more locomotives were strong. On the Northern main line heavy engines were needed in order to pull the more heavier freight trains on its steep slopes. There were thoughts of a 6-axle locomotive, possibly a modernized version of the popular Mg, but there were also thoughts of a new locomotive with coupling rods. After having evaluated offers for both types SJ decided to order the modernized Mg and the new engines was to become class Ma. The first Ma locomotives pulled passenger trains between Stockholm-Boden and Ange-Boden.

32 Ma engines in all were delivered to SJ between 1953-1960 and 9 engines were delivered to TGOJ between 1953-1954.

This locomotive, #830, was delivered to SJ in November 1953, taken out of service in January 1981 and scrapped in Notviken in March 1981.

Company: Statens J?rnv?gar
Model: Ma
Year: 1953
Propulsion: 15kV AC 16-2/3Hz; ASEA KJ 136
Traction Motors: 6 x 660 kW (3960kW)
Starting Tractive Effort: 376kN
Continuous Tractive Effort: 150kN
Maximum Speed: 100 km/h
Axle arrangement: Co'Co'
Driving wheel diameter: 1300mm
Wheelbase: 4,200mm+7,600mm
Length: 16,800mm
Width: 3,374mm
Height (over lowered pantograph): 4,500mm
Weight: 104.4t

Author: STW

SJ class Ma
sj_ma_alpha_numbers
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alphanumber_5.tga 4.04KB
alphanumber_6.tga 4.04KB
alphanumber_7.tga 4.04KB
alphanumber_8.tga 4.04KB
alphanumber_9.tga 4.04KB
black_blank.tga 3.04KB
white_blank.tga 3.04KB
sj_ma_art
sj_ma_art_icon.texture 42.81KB
sj_ma_art_512.texture 1.33MB
sj_ma_body
sj_ma_body.pm 464.78KB
reflect.texture 21.46KB
masj.texture 5.33MB
masj_xt.texture 5.33MB
flag-flag_tran.texture 5.46KB
sj_ma_shadow
sj_ma_shadow.pm 9.76KB
black.texture 1.45KB