| New South Wales Z19 class | 
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| Specifications | 
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 Configuration:
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 |  • Whyte | 0-6-0 | 
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 | Gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge | 
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 | Driver dia. | 4 ft 1⁄2 in (1,232 mm) | 
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 | Loco weight | Original: 75,000 lb (34,000 kg); Rebuilt:  84,000 lb (38,000 kg) | 
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 | Fuel type | Coal | 
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 | Firebox: |  | 
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 |  • Grate area | Original: 14 sq ft (1.3 m2);  Rebuilt: 18 sq ft (1.7 m2) | 
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 | Boiler pressure | Original: 130 psi (0.90 MPa); Rebuilt: 150 psi (1.03 MPa) | 
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 | Heating surface | Original: 1,275 sq ft (118.5 m2); Rebuilt: 1,320 sq ft (123 m2) | 
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 | Cylinders | 2 inside | 
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 | Cylinder size | 18 in × 24 in (457 mm × 610 mm) | 
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| Performance figures | 
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 | Tractive effort | Original: 17,900 lbf (79.6 kN); Rebuilt: 20,655 lbf (91.9 kN) | 
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The New South Wales Z19 class is a class of 0-6-0 steam locomotives operated by the New South Wales Government Railways of Australia.