New Zealand DC class locomotive

Specifications
Specifications
Configuration:;
• UIC	A1A-A1A
Gauge	3 ft 6 in (1,067 mm)
Wheel diameter	1.25 metres (4 ft 1 in)
Length	14.10 metres (46 ft 3 in)
Width	2.72 metres (8 ft 11 in)
Height	3.76 metres (12 ft 4 in)
Adhesive weight	60.0 tonnes (59.1 long tons; 66.1 short tons)
Loco weight	82.0 tonnes (80.7 long tons; 90.4 short tons)
Fuel type	Diesel
Prime mover	EMD 12-645C or EMD 12-645E
RPM range	900 rpm
Engine type	V12 Diesel engine
Aspiration	Normally aspirated (Roots blower)
Cylinders	12
Cylinder size	230 mm (9+1⁄16 in) x 250 mm (9.8 in)

Type and origin
Type and origin
Power type	Diesel-electric
Builder	General Motors Canada
Model	EMD G22AR
Build date	1961 – 1967 as DA class
Rebuilder	Clyde Engineering, Rosewater; Hutt Workshops
Rebuild date	1978 – 1981
Number rebuilt	85

New Zealand DC class
New Zealand DC class
	DCP 4801 and DC 4346 with a mainline shunt south of Christchurch
Power type
Type and origin
Power type	Diesel-electric
Builder	General Motors Canada
Model	EMD G22AR
Build date	1961 – 1967 as DA class
Rebuilder	Clyde Engineering, Rosewater; Hutt Workshops
Rebuild date	1978 – 1981
Number rebuilt	85
Configuration:;
Specifications
Configuration:;
• UIC	A1A-A1A
Gauge	3 ft 6 in (1,067 mm)
Wheel diameter	1.25 metres (4 ft 1 in)
Length	14.10 metres (46 ft 3 in)
Width	2.72 metres (8 ft 11 in)
Height	3.76 metres (12 ft 4 in)
Adhesive weight	60.0 tonnes (59.1 long tons; 66.1 short tons)
Loco weight	82.0 tonnes (80.7 long tons; 90.4 short tons)
Fuel type	Diesel
Prime mover	EMD 12-645C or EMD 12-645E
RPM range	900 rpm
Engine type	V12 Diesel engine
Aspiration	Normally aspirated (Roots blower)
Cylinders	12
Cylinder size	230 mm (9+1⁄16 in) x 250 mm (9.8 in)
Maximum speed
Performance figures
Maximum speed	100 km/h (62 mph)
Power output	1,062 kW (1,424 hp) (645C); 1,230 kW (1,650 hp) (645E)
Tractive effort	140 kN (31,000 lbf)
Number in class
Career
Number in class	85
Numbers	DC 4006 – 4951 (TMS); DC 1551 – 1599 (original)
First run	1978
Disposition	In service: 18; Withdrawn: 3; Scrapped: 52; Preserved: 6; Sold overseas: 6

The New Zealand DC class locomotive is a type of diesel-electric mainline locomotive on the New Zealand rail network, operated by KiwiRail on freight trains, and formerly on long-distance passenger trains. The class was rebuilt from the DA class in the late 1970s and early 1980s, mainly in Australia. After the DA class, they were the most numerous class of diesel locomotive on New Zealand's railway network and remained numerically dominant until the mid-2010s when withdrawals began.

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