NZR B class (1899)

Specifications
Specifications
Configuration:;
• Whyte	4-8-0
Gauge	3 ft 6 in (1,067 mm)
Driver dia.	42.5 in (1.080 m)
Length	52 ft 1+1⁄2 in (15.89 m)
Adhesive weight	31 long tons 14 cwt (71,000 lb or 32.2 t); 31 long tons 14 hundredweight (32.2 t; 35.5 short tons)
Tender weight	25 long tons 10 cwt (57,100 lb or 25.9 t); 25 long tons 10 hundredweight (25.9 t; 28.6 short tons)
Total weight	68 long tons 10 cwt (153,400 lb or 69.6 t); 68 long tons 10 hundredweight (69.6 t; 76.7 short tons)
Fuel type	Coal
Fuel capacity	4 long tons 0 cwt (9,000 lb or 4.1 t); 4 long tons 0 hundredweight (4.1 t; 4.5 short tons)
Water cap.	1,700 imperial gallons (7,700 L; 2,000 US gal)
Firebox:
• Grate area	17.3 sq ft (1.61 m2) ; 26.4 sq ft (2.45 m2) Rebuilt
Boiler pressure	175 lbf/in2 (1.21 MPa) ; 200 lbf/in2 (1.38 MPa) Rebuilt
Heating surface	1,037 sq ft (96.3 m2) ; 768 sq ft (71.3 m2) Rebuilt
Cylinders	Two, outside
Cylinder size	16 in × 22 in (406 mm × 559 mm)

Type and origin
Type and origin
Power type	Steam
Builder	NZR Addington Workshops (6);; Sharp, Stewart & Co. (4)
Build date	1899 (5), 1901 (1), 1902 (2), 1903 (2)
Total produced	10

NZR B class (1899)
NZR B class (1899)
	B class 4-8-0 steam locomotive, NZR number 178
Power type
Type and origin
Power type	Steam
Builder	NZR Addington Workshops (6);; Sharp, Stewart & Co. (4)
Build date	1899 (5), 1901 (1), 1902 (2), 1903 (2)
Total produced	10
Configuration:;
Specifications
Configuration:;
• Whyte	4-8-0
Gauge	3 ft 6 in (1,067 mm)
Driver dia.	42.5 in (1.080 m)
Length	52 ft 1+1⁄2 in (15.89 m)
Adhesive weight	31 long tons 14 cwt (71,000 lb or 32.2 t); 31 long tons 14 hundredweight (32.2 t; 35.5 short tons)
Tender weight	25 long tons 10 cwt (57,100 lb or 25.9 t); 25 long tons 10 hundredweight (25.9 t; 28.6 short tons)
Total weight	68 long tons 10 cwt (153,400 lb or 69.6 t); 68 long tons 10 hundredweight (69.6 t; 76.7 short tons)
Fuel type	Coal
Fuel capacity	4 long tons 0 cwt (9,000 lb or 4.1 t); 4 long tons 0 hundredweight (4.1 t; 4.5 short tons)
Water cap.	1,700 imperial gallons (7,700 L; 2,000 US gal)
Firebox:
• Grate area	17.3 sq ft (1.61 m2) ; 26.4 sq ft (2.45 m2) Rebuilt
Boiler pressure	175 lbf/in2 (1.21 MPa) ; 200 lbf/in2 (1.38 MPa) Rebuilt
Heating surface	1,037 sq ft (96.3 m2) ; 768 sq ft (71.3 m2) Rebuilt
Cylinders	Two, outside
Cylinder size	16 in × 22 in (406 mm × 559 mm)
Tractive effort
Performance figures
Tractive effort	18,550 lbf (82.5 kN) ; 21,200 lbf (94 kN) Rebuilt
Operators
Career
Operators	NZGR
Number in class	10
Numbers	178, 198, 302–309
Withdrawn	1960–1967
Disposition	10(all) scrapped

The NZR B class of 1899 was a class of steam locomotives that operated on New Zealand's national rail network. An earlier B class of Double Fairlies had entered service in 1874, but as they had departed from the ownership of the New Zealand Railways (NZR) by the end of 1896, the B classification was free to be re-used. Despite early difficulties, they were amongst NZR's most influential designs.