South African Class 12 4-8-2

{{Short description|1912 design of steam locomotive}} {{Use dmy dates|date=January 2025}} {{Use South African English|date=November 2013}} {{Infobox locomotive | name = South African Class 12 & 12R 4-8-2 | image = SAR Class 12R 1505 Nelland (Great Fish River) 220481.jpg | caption = 1505 crossing the [[Great Fish River]] near Nelland, between [[Cradock, South Africa|Cradock]] and [[Cookhouse (village)|Cookhouse]], 22 April 1981 | hatnote = ♠ Class 12 as built with a Belpaire firebox {{font color|red|♥}} Class 12R rebuilt with a Watson Standard boiler {{font color|blue|♣}} Steel firebox – {{font color|magenta|♦}} Copper firebox {{font color|blue|ʘ}} No. 1494-1501 – {{font color|red|ʘ}} All others | powertype = Steam | designer = [[South African Railways]] | builder = [[North British Locomotive Company]] [[Beyer, Peacock & Company]] | ordernumber = BP 01830 | serialnumber = NBL 19593-19596, 19684-19687, 20173-20180, 20812-20821 BP 5988-5997, 6003-6012 | buildmodel = Class 12 | builddate = 1912–1921 | totalproduction = 46 | whytetype = [[4-8-2]] | driver = 2nd coupled axle | gauge = {{Track gauge|Cape|allk=on}} | leadingdiameter = {{convert|28+1/2|in|mm|0|abbr=on}} | coupleddiameter = {{convert|51|in|mm|0|abbr=on}} | trailingdiameter = {{convert|33|in|mm|0|abbr=on}} | tenderdiameter = {{convert|34|in|mm|0|abbr=on}} | wheelbase = {{font color|blue|ʘ}} {{convert|58|ft|1+1/2|in|mm|0|abbr=on}} {{font color|red|ʘ}} {{convert|58|ft|3+3/8|in|mm|0|abbr=on}} | engine total = {{font color|blue|ʘ}} {{convert|31|ft|7+1/2|in|mm|0|abbr=on}} {{font color|red|ʘ}} {{convert|31|ft|9+1/2|in|mm|0|abbr=on}} | leading = {{font color|blue|ʘ}} {{convert|6|ft|mm|0|abbr=on}} {{font color|red|ʘ}} {{convert|6|ft|2|in|mm|0|abbr=on}} | coupled = {{convert|13|ft|6|in|mm|0|abbr=on}} | trailing = | tender total = {{convert|16|ft|9|in|mm|0|abbr=on}} | tenderbogie = {{convert|4|ft|7|in|mm|0|abbr=on}} | pivotcentres = | wheelspacing = | length = | over couplers = {{font color|blue|ʘ}} {{convert|66|ft|5+3/4|in|mm|0|abbr=on}} {{font color|red|ʘ}} {{convert|66|ft|7+3/4|in|mm|0|abbr=on}} | over bufferbeams= | width = | height = ♠ {{convert|12|ft|10|in|mm|0|abbr=on}} {{font color|red|♥}} {{convert|12|ft|7+1/2|in|mm|0|abbr=on}} | frametype = [[Locomotive frame#Plate frames|Plate]] | axleload = ♠ {{convert|16|lt|19|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|17|lt|5|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|16|lt|14|lcwt|kg|sigfig=4|abbr=on}} | leadingbogie/pony= ♠ {{convert|15|lt|18|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|16|lt|2|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|15|lt|8|lcwt|kg|sigfig=4|abbr=on}} | coupled all = | coupled 1 = ♠ {{convert|16|lt|11|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|16|lt|15|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|16|lt|1|lcwt|kg|sigfig=4|abbr=on}} | coupled 2 = ♠ {{convert|16|lt|13|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|17|lt|5|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|16|lt|14|lcwt|kg|sigfig=4|abbr=on}} | coupled 3 = ♠ {{convert|16|lt|11|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|16|lt|17|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|16|lt|2|lcwt|kg|sigfig=4|abbr=on}} | coupled 4 = ♠ {{convert|16|lt|19|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|16|lt|15|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|16|lt|1|lcwt|kg|sigfig=4|abbr=on}} | trail bogie/pony= ♠ {{convert|12|lt|5|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|11|lt|16|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|11|lt|6|lcwt|kg|sigfig=4|abbr=on}} | tenderbogieload = '''Bogie 1:''' {{convert|27|lt|10|lcwt|kg|sigfig=4|abbr=on}} '''Bogie 2:''' {{convert|23|lt|11|lcwt|kg|sigfig=4|abbr=on}} | tenderaxle = {{convert|13|lt|15|lcwt|kg|sigfig=4|abbr=on}} | weightondrivers = ♠ {{convert|66|lt|14|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|67|lt|12|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|64|lt|18|lcwt|kg|sigfig=4|abbr=on}} | locoweight = ♠ {{convert|94|lt|17|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|95|lt|14|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|91|lt|12|lcwt|kg|sigfig=4|abbr=on}} | tenderweight = {{convert|51|lt|1|lcwt|kg|sigfig=4|abbr=on}} | locotenderweight = ♠ {{convert|145|lt|18|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|146|lt|15|lcwt|kg|sigfig=4|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|142|lt|13|lcwt|kg|sigfig=4|abbr=on}} | tendertype = [[South African type MP1 tender|MP1 (2-axle bogies)]] [[South African type MP tender|MP]], MP1, [[South African type MR tender|MR]], [[South African type MS tender|MS]], [[South African type MT tender|MT]], [[South African type MT1 tender|MT1]], [[South African type MT2 tender|MT2]], [[South African type MX tender|MX]], [[South African type MY tender|MY]], [[South African type MY1 tender|MY1]] | fueltype = Coal | fuelcap = {{convert|10|lt|t|1|abbr=on}} | watercap = {{convert|4250|impgal|L|sigfig=3|abbr=on}} | tendercap = | sandcap = | fireboxtype = ♠ [[Belpaire firebox|Belpaire]] – {{font color|red|♥}} Round-top | firearea = ♠ {{convert|40|sqft|m2|abbr=on}} {{font color|red|♥}} {{convert|37|sqft|m2|abbr=on}} | boiler = {{font color|red|♥}} [[South African locomotive numbering and classification#Watson Standard boilers|Watson Standard no. 2]] | boilertype = | pitch = ♠ {{convert|7|ft|7|in|mm|0|abbr=on}} {{font color|red|♥}} {{convert|7|ft|8+1/4|in|mm|0|abbr=on}} | diameterinside = ♠{{font color|red|♥}} {{convert|5|ft|7+1/2|in|mm|0|abbr=on}} | lengthinside = ♠ {{convert|20|ft|mm|0|abbr=on}} {{font color|red|♥}}{{font color|blue|♣}} {{convert|19|ft|4|in|mm|0|abbr=on}} {{font color|red|♥}}{{font color|magenta|♦}} {{convert|19|ft|3+5/8|in|mm|0|abbr=on}} | smalltubediameter= ♠ '''139:''' {{convert|2+1/4|in|mm|0|abbr=on}} {{font color|red|♥}} '''87:''' {{convert|2+1/2|in|mm|0|abbr=on}} | largetubediameter= ♠ '''24:''' {{convert|5+1/2|in|mm|0|abbr=on}} {{font color|red|♥}} '''30:''' {{convert|5+1/2|in|mm|0|abbr=on}} | boilerpressure = {{convert|190|psi|kPa|0|abbr=on}} | safetyvalvetype = ♠ [[Safety valve#Ramsbottom safety valves|Ramsbottom]] {{font color|red|♥}} [[Safety valve#"Pop" valves|Pop]] | feedwaterheater = | totalsurface = ♠ {{convert|2488|sqft|m2|abbr=on}} {{font color|red|♥}} {{convert|2075|sqft|m2|abbr=on}} | tubearea = ♠ {{convert|2328|sqft|m2|abbr=on}} {{font color|red|♥}} {{convert|1933|sqft|m2|abbr=on}} | fluearea = | tubesandflues = | fireboxarea = ♠ {{convert|160|sqft|m2|abbr=on}} {{font color|red|♥}} {{convert|142|sqft|m2|abbr=on}} | superheatertype = | superheaterarea = ♠ {{convert|574|sqft|m2|abbr=on}} {{font color|red|♥}} {{convert|492|sqft|m2|abbr=on}} | generator = | cylindercount = Two | cylindersize = {{convert|22+1/2|in|mm|0|abbr=on}} bore {{convert|26|in|mm|0|abbr=on}} stroke | frontcylindersize= | rearcylindersize = | hpcylindersize = | lpcylindersize = | valvegear = [[Walschaerts valve gear|Walschaerts]] | valvetype = [[Piston valve (steam engine)|Piston]] | valvetravel = | valvelap = | valvelead = | transmission = | trainheating = | locobrakes = | trainbrakes = | safety = | coupling = [[Railway coupling#Johnston coupler|Johnston link-and-pin]] [[Janney coupler|AAR knuckle]] (1930s) | maxspeed = | poweroutput = | tractiveeffort = ♠{{font color|red|♥}} {{convert|36780|lbf|kN|abbr=on}} @ 75% | factorofadhesion = | locobrakeforce = | operator = [[South African Railways]] | operatorclass = Class 12 & 12R | powerclass = | numinclass = 46 | fleetnumbers = 1494–1519, 1859–1878 | officialname = | nicknames = | axleloadclass = | locale = | deliverydate = 1912–1921 | firstrundate = 1912 | lastrundate = | withdrawndate = | preservedunits = | restoredate = | scrapdate = | currentowner = | disposition = 42 scrapped, 4 preserved }}

The '''South African Railways Class 12 4-8-2''' of 1912 was a steam locomotive.

Between April 1912 and 1922, the [[South African Railways]] placed all together 46 Class 12 steam locomotives with a [[4-8-2]] type wheel arrangement in goods train service.<ref name="Paxton-Bourne">{{Paxton-Bourne|pages=10–11, 54-56}}</ref><ref name="SAR&H Jun 1945">Espitalier, T.J.; Day, W.A.J. (1945). ''The Locomotive in South Africa – A Brief History of Railway Development. Chapter VII – South African Railways (Continued).'' South African Railways and Harbours Magazine, June 1945. pp. 432-434.</ref>

==Manufacturers== [[File:Class 12 no. 1494.jpg|thumb|1494, as built, with a [[South African type MP1 tender|Type MP1 tender]] and running boards dipping down below the cab]] [[File:SAR Class 12R 1509 Germiston 070479.jpg|thumb|1509 with a [[South African type MT tender|Type MT tender]], Germiston, 7 April 1979]] [[File:SAR Class 12R 1499 Sydenham 160479.jpg|thumb|1499 with a modified [[South African type MP1 tender|Type MP1 tender]], Sydenham, 16 April 1979]] [[File:SAR Class 12R 1862 New Brighton 310379.jpg|thumb|1862 with a [[South African type MR tender|Type MR tender]], New Brighton, 31 March 1979]]

Design work commenced in 1910 for a new heavy goods engine for use on the heavy coal service between [[Witbank]] and [[Germiston]]. The resulting Class 12 was the first locomotive design to originate from the newly established South African Railways (SAR) in 1912. It was, in effect, an enlarged version of the already successful [[South African Class 3B 4-8-2|Class 3B]] which had also been designed by SAR Chief Mechanical Engineer (CME) D.A. Hendrie during his years on the [[Natal Government Railways]].<ref name="Paxton-Bourne"/><ref name="SAR&H Jun 1945"/><ref name="Holland 2">{{Holland-Vol 2|pages=20–21}}</ref><ref name="Durrant"/>

Orders for the first eight locomotives in the Class were placed on 22 March 1911. They were built in two batches of four, the first of which was delivered from [[North British Locomotive Company]] (NBL) in April 1912, numbered in the range from 1494 to 1497. The second batch, numbered in the range from 1498 to 1501, followed shortly thereafter. These first eight locomotives had bogies with a {{convert|6|ft|mm|0|abbr=off}} wheelbase.<ref name="Paxton-Bourne"/><ref name="SAR&H Jun 1945"/><ref name="Holland 2"/><ref name="diagram-book">South African Railways and Harbours Locomotive Diagram Book, 2'0" & 3'6" Gauge Steam Locomotives, 15 August 1941, as amended</ref><ref name="SAR Renumber">Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer's Office, Pretoria, January 1912, pp. 9, 12, 15, 46 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)</ref><ref name="NBL">North British Locomotive Company works list, compiled by Austrian locomotive historian Bernhard Schmeiser</ref>

These engines were followed by another eight in August 1913, numbered in the range from 1502 to 1509, and ten more in January 1915, numbered in the range from 1510 to 1519, all built by NBL. These and all subsequent Class 12 locomotives had leading bogies with a {{convert|6|ft|2|in|mm|0|abbr=off}} wheelbase. These locomotives were also {{convert|2|in|mm|0|abbr=off}} longer between couplers than the first eight.<ref name="Paxton-Bourne"/><ref name="SAR&H Jun 1945"/><ref name="Holland 2"/><ref name="diagram-book"/>

In June 1921, [[Beyer, Peacock & Company]] (BP) delivered the final twenty Class 12 locomotives, built in two batches of ten and numbered in the range from 1859 to 1878.<ref name="Paxton-Bourne"/><ref name="SAR&H Jun 1945"/><ref name="BP">Beyer, Peacock and Company production list, excluding Garratts, Customer List V1 04.08.02</ref>

==Characteristics== When the Class 12 was introduced, it was the largest non-articulated engine in South Africa and possibly in the world on railways of less than {{convert|4|ft|8+1/2|in|mm|0|abbr=off}} gauge. The first eight locomotives had cast steel frames for the leading bogies with three-point suspension links, similar to those of the [[South African Class 3B 4-8-2|Class 3B]]. On subsequent engines, this arrangement was modified to the two-point swing-link type controlled by laminated side springs, a design Hendrie adhered to in all his later engines.<ref name="SAR&H Jun 1945"/>

The locomotives were built with plate frames, [[Walschaerts valve gear]], superheaters and [[Belpaire firebox]]es. It was designed to have as short a fixed wheelbase as possible and the close spacing of the coupled wheels necessitated specially designed brake hangers outside the wheels. As built, the leading coupled axle had flangeless wheels, but it was subsequently retyred with flanges.<ref name="SAR&H Jun 1945"/><ref name="diagram-book"/>

The NBL-built locomotives were very similar in appearance to the Class 3B, with running boards which curved down below the cab at the rear and down to meet the buffer beam at the front. The only major design alteration between the NBL and BP locomotive orders was to the cab. With the earlier cabs, many drivers wore leather guards on their left legs to protect them from the heat when the fire door was open. The BP-built locomotives had larger and more spacious cabs to provide increased comfort for the enginemen, and running boards which ran straight through to the rear buffer beams.<ref name="SAR&H Jun 1945"/><ref name="Holland 2"/>

==Tender== The Class 12 locomotives introduced a new [[South African type MP1 tender|Type MP1 tender]] with a coal capacity of {{convert|10|lt|t|1|abbr=off}} and a water capacity of {{convert|4250|impgal|L|sigfig=3|abbr=off}}. This marked the introduction of a standard tender type which, with few modifications, was eventually to be used on all the Hendrie-designed locomotives. The tender bogies were interchangeable with other tender types operating in the Transvaal and Orange Free State at the time, while its centre longitudinal frame members were carried through unbroken from buffer to buffer. The arrangement of the buffing gear between engine and tender was the result of a long series of experiments, made with the view to avoid excessive fore and aft action between engine and tender while running at high speed.<ref name="SAR&H Jun 1945"/><ref name="Holland 2"/>

==Watson standard boilers== During the 1930s, many serving locomotives were reboilered with a standard boiler type designed by then CME A.G. Watson as part of his standardisation policy. Such Watson Standard reboilered locomotives were reclassified by adding an "R" suffix to their classification.<ref name="Paxton-Bourne"/><ref name="diagram-book"/>

From 1935, all 46 Class 12 locomotives were eventually reboilered with [[South African locomotive numbering and classification#Watson Standard boilers|Watson Standard no. 2]] boilers and reclassified to Class 12R. In the process, they were also equipped with Watson cabs with their distinctive slanted fronts to facilitate access to the firebox side stays, compared to the vertical fronts of the original cabs. In the case of the NBL-built locomotives, the reboilered engines were also fitted with running boards which continued straight through underneath their cabs. The new boilers raised the engine's boiler pitch by {{convert|1+1/4|in|mm|0|abbr=off}}.<ref name="SAR&H Jun 1945"/><ref name="Holland 2"/><ref name="Durrant">{{Durrant-Twilight|pages=59, 137}}</ref><ref name="diagram-book"/>

At the same time, the footplate was extended at the back end, in the form of a platform overhanging the tender, which dispensed with the usual fall plate between engine and tender. A handrail was provided, passing round the back of the footplate without impeding the stoker's access to the coal bunker, an arrangement which was subsequently adopted as standard practice. It gave the stoker a much more stable foothold and reduced the risk to the crew in the event of a broken intermediate drawbar. Many of the reboilered locomotives also received new [[South African type MT tender|Type MT tenders]] with a coal capacity of {{convert|12|lt|t|1|abbr=off}} and a water capacity of {{convert|6000|impgal|L|sigfig=3|abbr=off}}.<ref name="SAR&H Jun 1945"/>

Their original boilers were fitted with [[Safety valve#Ramsbottom safety valves|Ramsbottom safety valves]], while the Watson Standard boilers were fitted with [[Safety valve#"Pop" valves|Pop safety valves]]. An obvious difference between an original and a Watson Standard reboilered locomotive is usually a rectangular regulator cover, just to the rear of the chimney on the reboilered locomotive. In the case of the Class 12 engines, two even more obvious differences are the Watson cab and the absence of the Belpaire firebox hump between the cab and boiler on the reboilered locomotives.<ref name="diagram-book"/>

==Service== ===South African Railways=== The locomotives gave outstanding performance with low maintenance costs. They proved to be most successful in the service they had been designed for, handling loads of 1,400 tons and doing the return trip between Witbank and Germiston in one day. This compared favourably with the 2-6-6-0 and 2-6-6-2 Mallet locomotives which, while able to handle 1,600 tons, could not make a round trip in one day.<ref name="SAR&H Jun 1945"/><ref name="Holland 2"/><ref name="Soul of a Railway 7-21">[https://sites.google.com/site/soulorailway/home/system-7-1/soul-of-a-railway-part-21-witbank-line-by-les-pivnic-eugene-armer-peter-stow-and-peter-micenko Soul of A Railway, System 7, Western Transvaal, based in Johannesburg, Part 21: Witbank Line by Les Pivnic, Eugene Armer, Peter Stow and Peter Micenko. Caption 3.] {{Webarchive|url=https://web.archive.org/web/20201024151650/https://sites.google.com/site/soulorailway/home/system-7-1/soul-of-a-railway-part-21-witbank-line-by-les-pivnic-eugene-armer-peter-stow-and-peter-micenko |date=24 October 2020 }} (Accessed on 4 May 2017)</ref>

They were also used around [[Ladysmith, KwaZulu-Natal|Ladysmith]] in Natal. In the 1940s, the Natal locomotives were relocated to the Orange Free State, where some were shedded at [[Bloemfontein]] and at [[Bethlehem, Free State|Bethlehem]], all in shunting service. The Transvaal had a large contingent stationed at [[Springs, South Africa|Springs]], Germiston and [[Krugersdorp]], also mainly used for shunting.<ref name="Paxton-Bourne"/><ref name="Durrant"/>

By the 1950s, some were allocated to the Cape Midland system, stationed at Sydenham in [[Port Elizabeth]]. Until the Midland received [[South African Class 15F 4-8-2|Class 15F]] locomotives in 1957, they worked the mainline section to [[Cradock, South Africa|Cradock]]. Even though they were subsequently allocated to dock shunting and yard work in the [[New Brighton, Eastern Cape|New Brighton]] marshalling yards, they still assisted with mainline work when required and, in spite of their small {{convert|51|in|mm|0|abbr=off}} diameter coupled wheels, were comfortable at {{convert|60|mph|km/h|0|abbr=off}} when employed in tandem with the larger Class 15F.<ref name="Durrant"/><ref name="Soul of a Railway 3-9">[https://sites.google.com/site/soulorailway/home/system-3-1/the-midland-main-line Soul of A Railway, System 3, Part 9: The Midland Main Line, Part 1, Port Elizabeth to Paterson. Captions 14, 52, 58.] {{Webarchive|url=https://web.archive.org/web/20201024151618/https://sites.google.com/site/soulorailway/home/system-3-1/the-midland-main-line |date=24 October 2020 }} (Accessed on 5 February 2017)</ref>

Towards the end of the 1950s, the traditional [[South African Class 6J 4-6-0|Class 6]] and occasionally [[South African Class 3 4-8-2|Class 3R]] carriage-yard pilots at Bloemfontein made way for the much sturdier Class 12R which were displaced by Class 15Fs on the Cape Midland mainline. Although they had been drafted in for these old-age duties, the phenomenal growth in traffic during the 1960s had the result that the Class 12R were also frequently used for road jobs on the [[Kroonstad]] as well as the Bethlehem-[[Harrismith]] mainlines.<ref name="Soul of a Railway 5-1">[https://sites.google.com/site/soulorailway/home/system-5/part-1 Soul of A Railway, System 5, Part 1: Bloemfontein. Caption 21.] (Accessed on 1 March 2017)</ref>

===Zambian Railways=== Ten Class 12R locomotives were briefly hired to the [[Zambian Railways]] during a peak in that country's perpetual diesel motive power crisis in 1980, but were soon returned since the Zambian knowledge base on steam maintenance had virtually disappeared by then.<ref name="Durrant"/>

===Industrial=== For some reason, few Class 12 locomotives ended up in industrial service despite their evident suitability for such work. Only five were sold into private service. * NBL-built no. 1510 went to Umgala Colliery at [[Utrecht, KwaZulu-Natal|Utrecht]] as no. 7. * NBL-built no. 1511 went to Middelplaas Manganese as no. SL001. * NBL-built no. 1515 went first to Tweefontein Colliery and later to Witbank Consolidated Coal Mine. * BP-built no. 1863 and 1864 went to Middelplaas Manganese as numbers SL002 and SL003 respectively.<ref name="Durrant"/>

==Works numbers== The Class 12 builders, years built and works numbers are listed in the table.<ref name="NBL"/><ref name="BP"/> {| class="wikitable collapsible collapsed sortable" style="margin:0.5em auto; font-size:100%;" |+'''Class 12 & 12R 4-8-2 {{nowrap|Builders, years built, works numbers and bogie wheelbase}}''' |- ! Builder !Year built !Works No. !Bogie wheelbase !SAR No. |- |NBL |1912 |19593 |{{convert|6|ft|mm|0|abbr=on}} |1494 |- |NBL |1912 |19594 |{{convert|6|ft|mm|0|abbr=on}} |1495 |- |NBL |1912 |19595 |{{convert|6|ft|mm|0|abbr=on}} |1496 |- |NBL |1912 |19596 |{{convert|6|ft|mm|0|abbr=on}} |1497 |- |NBL |1912 |19684 |{{convert|6|ft|mm|0|abbr=on}} |1498 |- |NBL |1912 |19685 |{{convert|6|ft|mm|0|abbr=on}} |1499 |- |NBL |1912 |19686 |{{convert|6|ft|mm|0|abbr=on}} |1500 |- |NBL |1912 |19687 |{{convert|6|ft|mm|0|abbr=on}} |1501 |- |NBL |1913 |20173 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1502 |- |NBL |1913 |20174 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1503 |- |NBL |1913 |20175 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1504 |- |NBL |1913 |20176 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1505 |- |NBL |1913 |20177 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1506 |- |NBL |1913 |20178 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1507 |- |NBL |1913 |20179 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1508 |- |NBL |1913 |20180 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1509 |- |NBL |1914 |20812 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1510 |- |NBL |1914 |20813 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1511 |- |NBL |1914 |20814 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1512 |- |NBL |1914 |20815 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1513 |- |NBL |1914 |20816 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1514 |- |NBL |1914 |20817 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1515 |- |NBL |1914 |20818 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1516 |- |NBL |1914 |20819 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1517 |- |NBL |1914 |20820 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1518 |- |NBL |1914 |20821 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1519 |- |BP |1921 |5988 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1859 |- |BP |1921 |5989 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1860 |- |BP |1921 |5990 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1861 |- |BP |1921 |5991 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1862 |- |BP |1921 |5992 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1863 |- |BP |1921 |5993 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1864 |- |BP |1921 |5994 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1865 |- |BP |1921 |5995 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1866 |- |BP |1921 |5996 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1867 |- |BP |1921 |5997 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1868 |- |BP |1921 |6003 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1869 |- |BP |1921 |6004 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1870 |- |BP |1921 |6005 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1871 |- |BP |1921 |6006 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1872 |- |BP |1921 |6007 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1873 |- |BP |1921 |6008 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1874 |- |BP |1921 |6009 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1875 |- |BP |1921 |6010 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1876 |- |BP |1921 |6011 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1877 |- |BP |1921 |6012 |{{convert|6|ft|2|in|mm|0|abbr=on}} |1878 |- |}

==Preservation==

{| class="wikitable" |- ! Class !! Number !! Works nmr !! THF / Private !! Leaselend / Owner !! Current Location !! Outside South Africa !! ? |- | 12R || 1865 || BP 5994 || Private || || Kimberley Locomotive Depot || || |- | 12R || 1947 || BALDWIN 52754 || THF || Reefsteamers || Germiston Locomotive Depot || || |- | 12R || 1505 || NBL 20176 || THF || Umgeni Steam Railway || Kloofstation (Inchaga) || || |- | 12A || 2111 || NBL 22751 || THF || || Bloemfontein Locomotive Depot || || |- | 12AR || 1535 || NBL 21753 || THF || Reefsteamers || Germiston Locomotive Depot || || |}

==References== {{Reflist}}

==External links== {{commons category-inline|South African Class 12 (4-8-2)}}

[[Category:Steam locomotives of South Africa]] [[Category:D.A. Hendrie locomotives]] [[Category:Watson Standard no. 2]] [[Category:4-8-2 locomotives]] [[Category:NBL locomotives]] [[Category:Beyer, Peacock locomotives]] [[Category:Cape gauge railway locomotives]] [[Category:Freight locomotives]] [[Category:Railway locomotives introduced in 1912]]