China Railways DFH mainline locomotives

Specifications
Specifications
Configuration:;
• UIC	DFH1,DFH3 B’B’; DFH4 6 axle
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Wheel diameter	DF1, DF3 1,050 mm (41.34 in); DF4 ?
Minimum curve	DF1, DF3 145 m (476 ft); DF4 ?
Length	DFH1 16.550 m (54 ft 3.6 in); DFH3 17.970 m (58 ft 11.5 in)
Width	DFH1 3.106 m (10 ft 2.28 in); DFH3 3.279 m (10 ft 9.09 in)
Height	DFH1 4.516 m (14 ft 9.80 in); DFH3 4.450 m (14 ft 7.20 in)
Loco weight	DFH1 84 t (83 long tons; 93 short tons); DFH3 92t
Prime mover	DFH1 2 of 12V175Z, 12V180Z or 12V175ZL; DFH3 12V180JZ; DFH4 2 of 12V200ZL later 12V200ZJ
Transmission	DFH1 hydraulic 12175Z (2 of)

Type and origin
Type and origin
Power type	Diesel-hydraulic
Builder	DFH1: Sifang; DFH3: Sifang; DFH4 Sifang, Ziyang, Qishuyan; China
Build date	DFH1 1959‡; 1964-1972 (series); DFH3 1976-87; DFH4 1969-81
Total produced	DFH1 109; DFH3 268; DFH4 6

DFH1, DFH3, DFH4
东方红1、东方红3、东方红4
DFH1, DFH3, DFH4; 东方红1、东方红3、东方红4
	DFH3 0009 at Beijing Railway Museum (2010)
Power type
Type and origin
Power type	Diesel-hydraulic
Builder	DFH1: Sifang; DFH3: Sifang; DFH4 Sifang, Ziyang, Qishuyan; China
Build date	DFH1 1959‡; 1964-1972 (series); DFH3 1976-87; DFH4 1969-81
Total produced	DFH1 109; DFH3 268; DFH4 6
Configuration:;
Specifications
Configuration:;
• UIC	DFH1,DFH3 B’B’; DFH4 6 axle
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Wheel diameter	DF1, DF3 1,050 mm (41.34 in); DF4 ?
Minimum curve	DF1, DF3 145 m (476 ft); DF4 ?
Length	DFH1 16.550 m (54 ft 3.6 in); DFH3 17.970 m (58 ft 11.5 in)
Width	DFH1 3.106 m (10 ft 2.28 in); DFH3 3.279 m (10 ft 9.09 in)
Height	DFH1 4.516 m (14 ft 9.80 in); DFH3 4.450 m (14 ft 7.20 in)
Loco weight	DFH1 84 t (83 long tons; 93 short tons); DFH3 92t
Prime mover	DFH1 2 of 12V175Z, 12V180Z or 12V175ZL; DFH3 12V180JZ; DFH4 2 of 12V200ZL later 12V200ZJ
Transmission	DFH1 hydraulic 12175Z (2 of)
Maximum speed
Performance figures
Maximum speed	DFH1 140 km/h (87 mph)*, 120 km/h (75 mph)†; DFH3 120 km/h (75 mph)
Power output	DFH1 1,060 kW (1,420 hp), 1,220 kW (1,640 hp)†; DFH3 2730 kW (980 hp), 2*820 kW (1,100 hp)¤; DFH4 3,308 kW (4,436 hp)¶
Tractive effort	DFH1250 kN (56,000 lbf) / 270 kN (61,000 lbf) (maximum); DFH3 271 kN (61,000 lbf) (maximum)
Operators
Career
Operators	China Railway; Korean State Railway
	First 73 units; † Final 36 units; ‡ NY1 prototype; ¤ Two units produced in 1986 of higher power; ¶ First units produced were of higher power;

The China Railways DFH1 was a type of 4-axle B'B' single-cab diesel-hydraulic locomotive used on mainline passenger services; the DFH3 was a later development of a similar design but with two driving cabs.

The China Railways DFH4 was a 6-axle high-powered freight and passenger locomotive, it did not reach mass production.

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