page_title: South African Class B 0-6-4T
section_title: NZASM
hierarchical_section_title: South African Class B 0-6-4T / Service / NZASM
caption_attribution_description: Last bolt ceremony on the railway line from Natal to Transvaal at Heidelberg (South Africa).
context_page_description: The South African Railways Class B 0-6-4T of 1893 was a steam locomotive from the pre-Union era in Transvaal.
  Between 1893 and 1898, 175 46 Tonner 0-6-4 tank steam locomotives were placed in service by the Nederlandsche-Zuid-Afrikaansche Spoorweg-Maatschappij in the Zuid-Afrikaansche Republiek.
  In 1899, twenty more were ordered, of which only two were delivered by the time the Imperial Military Railways took over all railway operations in the two Boer Republics during the Second Boer War. The other eighteen locomotives in this order were intercepted by the Imperial Military Railways, who diverted two of them to Lourenço Marques.
  At the end of the war, the survivors of these locomotives were taken onto the roster of the Central South African Railways, renumbered and designated Class B, while the two in Mozambique were taken onto the roster of the Caminhos de Ferro de Mocambique. In 1912, when the remaining locomotives were assimilated into the South African Railways, they were renumbered again, but retained their Class B designation.
context_section_description: In NZASM service, all the Esslingen-built 46 Tonners were given names as well as engine numbers. The names are listed in Table 1.
  The 46 Tonners became the standard mainline locomotives of the NZASM and were used on all kinds of traffic between Pretoria in the ZAR and Lourenço Marques in Mozambique. Since they did not have a leading bogie, they were found to be rough-riding and it became the practice to run them bunker forward whenever possible. The trailing bogie had a steadying effect on the locomotive when leading and the crew was not shaken up as much.
  On 10 October 1895, on ZAR President Paul Kruger's birthday, 46 Tonner no. 104 Van Rensburg hauled the NZASM train to the last bolt ceremony at Heidelberg, Transvaal, where the Transvaal and Natal mainlines were linked up.
caption: No. 104 Van Rensburg at the last bolt ceremony at Heidelberg, Transvaal, 10 October 1895
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