NZR M class

NZR M Class

Type and origin Builder Hunslet Build date 1875 Total produced 4 Rebuilder NZR Rebuild date 1888-1890

Specifications Configuration 0-6-0T Driver dia. 42.25 in (1.073 m) Loco weight 27.7 long tons (28.1 tonnes; 31.0 short tons) Firebox:  • Firegrate area 8.6 sq ft (0.80 m^2) Boiler pressure 130 lbf/in^2 (896 kPa) Heating surface 583 sq ft (54.2 m^2) Cylinders Two, outside Cylinder size 13 in × 20 in (330 mm × 508 mm)

Performance figures Tractive effort 7,200 lbf (32.03 kN)

Career First run 1875

The NZR M class were a series of four tank engines built in England for the Otago railways Bluff to Winton section. They were acquired by NZR in the late 1870s and rebuilt in the late 1880s. As rebuilt they were not very successful and were used in shunting duties until retirement in the 1920s.

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