# SECR J class

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SECR J class J class 1598 at Ashford 1946 Type and origin Power type Steam Designer Harry Wainwright Builder Ashford Works Build date 1913 Total produced 5 Specifications Configuration: ​ • Whyte 0-6-4T • UIC C2′ h2t Gauge 4 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 load 18 long tons 14 cwt (41,900 lb or 19 t) Adhesive weight 51 long tons 18 cwt (116,300 lb or 52.7 t) Loco weight 70 long tons 14 cwt (158,400 lb or 71.8 t) Fuel type Coal Fuel capacity 3 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 area 17.6 sq ft (1.64 m2) Boiler pressure 160 lbf/in2 (1.10 MPa) Heating surface: ​ • Firebox 112 sq ft (10.4 m2) • Tubes 593 sq ft (55.1 m2) • Flues 294 sq ft (27.3 m2) Superheater: ​ • Type Schmidt • Heating area 234 sq ft (21.7 m2) Cylinders Two, inside Cylinder size 19+1⁄2 in × 26 in (495 mm × 660 mm) Valve type 8-inch (203 mm) piston valves Performance figures Tractive effort 20,400 lbf (90.74 kN) Career Operators South Eastern and Chatham Railway → Southern Railway → Southern Region of British Railways Class SECR / SR: J Withdrawn 1949–1951 Disposition All scrapped

The **SECR J class** was a class of [0-6-4T](/source/0-6-4T) [steam](/source/Steam_locomotive) [tank locomotive](/source/Tank_locomotive) built for heavy freight service on the [South Eastern and Chatham Railway](/source/South_Eastern_and_Chatham_Railway), by [Harry Wainwright](/source/Harry_Wainwright).

## History

The [South Eastern and Chatham Railway](/source/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](/source/SECR_C_class) [0-6-0](/source/0-6-0) and his [H class](/source/SECR_H_class) [0-4-4T](/source/0-4-4T) [Harry Wainwright](/source/Harry_Wainwright) sought to combine their good features but was limited by weight restrictions on many lines. The result was an [0-6-4](/source/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](/source/Southern_Railway_(Great_Britain)) in 1927/8 to create a unified sequence from A595 to A599. These later became 1595–1599, and then 31595–31599 under [British Railways](/source/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. **[^](#cite_ref-FOOTNOTEBradley198045_1-0)** [Bradley 1980](#CITEREFBradley1980), p. 45.

1. **[^](#cite_ref-FOOTNOTEBradley198048_2-0)** [Bradley 1980](#CITEREFBradley1980), p. 48.

1. **[^](#cite_ref-3)** Austin, David (2012). "The 'J' class engines of the SE&CR". *The Southern Way*. No. 20. pp. 84–93. [ISBN](/source/ISBN_(identifier)) [9781906419899](https://en.wikipedia.org/wiki/Special:BookSources/9781906419899).

- Bradley, D. L. (1980). *The locomotive history of the South Eastern and Chatham Railway*. London: [Railway Correspondence and Travel Society](/source/Railway_Correspondence_and_Travel_Society). [ISBN](/source/ISBN_(identifier)) [0-901115-49-5](https://en.wikipedia.org/wiki/Special:BookSources/0-901115-49-5).

## External links

- ["SECR J Class 0-6-4T"](https://web.archive.org/web/20250702233126/https://sremg.org.uk/steam/j(se)class.shtml). *Southern E-Group*. Archived from [the original](https://sremg.org.uk/steam/j(se)class.shtml) on 2 July 2025. Retrieved 2 July 2025.

- ["Class J Details"](http://www.railuk.info/steam/getsteamclass.php?item=J). *RailUK*.

v t e South Eastern and Chatham Railway locomotives SER B. Cubitt (1842–45) 13 1 (1841) 7 19 23 J. Cudworth (1845–76) 1 (1846) 88 68 115 144 27 81 134 152 47 95 6 21 113 59 179 118 19 205 10 235 (G1) 124 171 152 A. M. Watkin (1876–77) 259 R. C. Mansell (1877–78) 58 J. Stirling (1878–98) A B F O Q R LCDR J. Cubitt & T. R. Crampton (1853–60) Sondes Tiger (G Class) Echo (K Class) Secondhand (1860–61) Meteor Swale Magnet Hercules Aeolus ex-LNWR 2-2-0s Brigand (O Class) Ruby (R Class) W. Martley (1860–74) Acis (H Class) Adrian (J Class) Huz New Aeolus (S Class) Rose (Q Class) Second Sondes (F Class) Scotchmen (E Class) Large Scotchmen (D Class) Dawn (N Class) Bluebell (P Class) Reindeer (L Class) Enigma (L Class) Europa (C Class) W. Kirtley (1874–99) A A1 A2 B B1 B2 M M1 M2 M3 R R1 T SECR Harry Wainwright (1899–1913) B1 C D E F1 H J L O1 P Q1 R1 R. E. L. Maunsell (1913–22) D1 E1 K and K1 N N1 S Others William Pickersgill (GNoS) G John Ramsbottom Ironclads William Stroudley A1 Terrier LB&SCR locomotives LSWR locomotives Southern Railway locomotives British Railways steam locomotives

v t e Principal locomotives of the Southern Railway Urie H15 class N15 class S15 class Maunsell E1/R class K and K1 classes L1 class Lord Nelson class N class N1 class N15 (King Arthur) class N15X class Q class U class U1 class V (Schools) class W class Z class Bulleid Leader class Merchant Navy class Q1 class USA class West Country and Battle of Britain classes Non-steam locomotives Diesel shunters 1 to 3 D2341 11001 Diesel shunters 15211 to 15236 Mainline diesels 10201 to 10203 Electrics CC1 to CC3 British Railways steam locomotives Great Western Railway locomotives LMS locomotives LNER locomotives Southern Railway locomotives

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