2-8-2 Steam Locomotives in Sweden

Class 27/OKe/N2 (Locobase 20466)

Data from Litt N2 one of a series of SJ locomotive diagrams archived by Anders Lundburg on [], last accessed 17 November 2018; Tommy Nilsson's Svenska-lok.se website at Svenska-lok.se, last accessed 21 June 2018; and "2-8-2 Tank Goods Locomotives, Uppsale-Gafle [sic] Ry., Sweden", Locomotive Magazine, XXII [22] (15 November 1916), p. 218.. Works numbers were 562-564 in 1916.

UGJ's network featured many short-radius curves and frequent 1% gradients. The railway required freight power that put no more than 16 metric tons per axle on the rail and could negotiate the many tight curves. And they also wanted a bi-directional engine. Motala reduced the tank's rigid wheelbase to 3.2 metres (10 ft 6 in) by allowing lateral movement in the front and rear driven axles.

Possibly for clearance reasons, the cylinders and motion lay between the plate frames, which caused Motala to position the side tanks relatively high to allow easier maintenance. The cylinders were raked to clear the lead drivers and drive the second axle. LM commented that the particular linkage system--return cranks on the coupling rod crank pins using rocker arms to actuate the valve gear--eliminated "cumbersome eccentrics and reduces the complication through the frames inevitable with inside cylinder and motion."

LM claimed that the trio had "given the highest satisfaction in service."

The Statens Jarnvagar took over the class in 1933 and gave it class ID of OKe (and later N2).

All three locomotives served until 1960, when they entered the strategic reserve. The first two were scrapped in 1970 and the 1521 traveled to a plinth in Motala in 1970 and eventually transferred to Gavle's Swedish Railway Museum.

(Using the narrower, fire-side tube and flue diameters of 42.5 mm and 122 mm, respectively, produced a tube heating surface of 118.18 sq m (1,272 sq ft) and a total estimated EHS of 129.94 sq m (1,399 sq ft).)