SECR J class

SECR J class
J class 1598 at Ashford 1946
Type and origin
Power typeSteam
DesignerHarry Wainwright
BuilderAshford Works
Build date1913
Total produced5
Specifications
Configuration:
​
 • Whyte0-6-4T
 • UICC2′ h2t
Gauge4 ft 8+1⁄2 in (1,435 mm)
Driver dia.5 ft 6 in (1.676 m)
Trailing dia.3 ft 7 in (1.092 m)
Axle load18 long tons 14 cwt (41,900 lb or 19 t)
Adhesive weight51 long tons 18 cwt (116,300 lb or 52.7 t)
Loco weight70 long tons 14 cwt (158,400 lb or 71.8 t)
Fuel typeCoal
Fuel capacity3 long tons 5 cwt (7,300 lb or 3.3 t)
Water cap.2,000 imp gal (9,100 L; 2,400 US gal)
Firebox:​
 • Grate area17.6 sq ft (1.64 m2)
Boiler pressure160 lbf/in2 (1.10 MPa)
Heating surface:​
 • Firebox112 sq ft (10.4 m2)
 • Tubes593 sq ft (55.1 m2)
 • Flues294 sq ft (27.3 m2)
Superheater:
​
 • TypeSchmidt
 • Heating area234 sq ft (21.7 m2)
CylindersTwo, inside
Cylinder size19+1⁄2 in × 26 in (495 mm × 660 mm)
Valve type8-inch (203 mm) piston valves
Performance figures
Tractive effort20,400 lbf (90.74 kN)
Career
Operators
ClassSECR / SR: J
Withdrawn1949–1951
DispositionAll scrapped

The SECR J class was a class of 0-6-4T steam tank locomotive built for heavy freight service on the South Eastern and Chatham Railway, by Harry Wainwright.

History

The South Eastern and Chatham Railway (SECR) had a need for versatile mixed traffic locomotives which could accelerate quickly so as not to impede the heavy passenger traffic on the densely used lines around London. Following the success of his C class 0-6-0 and his H class 0-4-4T Harry Wainwright sought to combine their good features but was limited by weight restrictions on many lines. The result was an 0-6-4 tank.[1] Five locomotives were constructed at Ashford during 1913, but Wainwright retired soon afterwards and no more were constructed. The class were moderately successful on a variety of secondary passenger and freight services. All had completed more than one million miles at the time of their withdrawal between 1949 and 1951.[2][3]

Numbering

The class were originally allocated unused numbers between 126 and 614. However, all but number 597 were renumbered by the Southern Railway in 1927/8 to create a unified sequence from A595 to A599. These later became 1595–1599, and then 31595–31599 under British Railways.

Locomotive Summary

J class locomotive fleet summary
SECR
No.		 SR
No.		 BR
No.		 Date
Delivered		 Date
Withdrawn
129 A596 31596 October 1913 September 1951
207 A595 31595 October 1913 April 1951
597 A597 31597 November 1913 October 1950
611 A598 31598 November 1913 December 1950
614 A599 31599 December 1913 November 1949

Sources

  1. ^ Bradley 1980, p. 45.
  2. ^ Bradley 1980, p. 48.
  3. ^ Austin, David (2012). "The 'J' class engines of the SE&CR". The Southern Way. No. 20. pp. 84–93. ISBN 9781906419899.

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