NBR S class

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NBR S Class
LNER Class J37
Carlisle Station geograph-2356758-by-Ben-Brooksbank.jpg
J37 No. 64608 at Carlisle (Citadel)1960
Type and origin
Power type Steam
Designer William Paton Reid
Builder Cowlairs railway works
North British Locomotive Co.
Build date 1914-1921
Total produced 104
Configuration 0-6-0
Gauge 4 ft 8 12 in (1,435 mm)
Driver diameter 5 ft 0 in (1.524 m)
Locomotive weight 54 long tons 14 cwt (122,500 lb or 55.6 t)
Fuel type Coal
Boiler pressure 180 lbf/in2 (1.24 MPa)
Cylinders Two, inside
Cylinder size 19.5 in × 26 in (495 mm × 660 mm)
Valve gear Stephenson
Performance figures
Tractive effort 25,210 lbf (112.14 kN)
Withdrawn 1959-1966

The NBR S Class (LNER Class J37) is a class of 0-6-0 steam locomotive designed by William Paton Reid for freight work on the North British Railway. It was a development of the NBR B class. They were introduced in 1914 and had superheaters, inside cylinders and piston valves operated by Stephenson valve gear.[1]


A total of 104 locomotives was built, all of which came into British Railways (BR) ownership at nationalisation in 1948. BR numbers were 64536-64639.[2]


  1. ^ "The Reid J37 (NBR Classes B & S) 0-6-0 Locomotives". Lner.info. Retrieved 2012-02-27. 
  2. ^ Ian Allan ABC of British Railways Locomotives, 1948 edition, part 4, p.29

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