Union Pacific 9000 Class

Specifications
Specifications
Configuration:;
• Whyte	4-12-2
• UIC	2′F1′ h3g
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	67 in (1,702 mm)
Wheelbase	Loco & tender: 91.50 ft (27.89 m)
Length	102 ft 7 in (31.27 m)
Axle load	59,000 lb (26,762 kg; 27 t)
Adhesive weight	354,000 lb (160,572 kg; 161 t)
Loco weight	496,500 lb (225,209 kg; 225 t)
Tender weight	310,599 lb (140,885 kg; 141 t)
Total weight	807,099 lb (366,094 kg; 366 t)
Fuel type	Coal
Fuel capacity	44,000 lb (19,958 kg; 20 t)
Water cap.	18,000 US gallons (68,000 L; 15,000 imp gal)
Firebox:
• Grate area	108.25 sq ft (10.057 m2)
Boiler	92 in (2,337 mm)
Boiler pressure	220 lbf/in2 (1.52 MPa)
Heating surface:
• Firebox	591 sq ft (54.9 m2)
Superheater:;
• Heating area	2,560 sq ft (238 m2)
Cylinders	Three, two outside, one inside
Cylinder size	Outside (2): 27 in × 32 in (686 mm × 813 mm);; Inside (1): 27 in × 31 in (686 mm × 787 mm);
Valve gear	Gresley Conjugated

Type and origin
Type and origin
Power type	Steam
Builder	American Locomotive Company
Build date	1926–1930
Total produced	88

Union Pacific 9000-series
Union Pacific 9000-series
	The prototype, UP 9000, as preserved at the Los Angeles County Fairplex in Pomona, California.
Power type
Type and origin
Power type	Steam
Builder	American Locomotive Company
Build date	1926–1930
Total produced	88
Configuration:;
Specifications
Configuration:;
• Whyte	4-12-2
• UIC	2′F1′ h3g
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	67 in (1,702 mm)
Wheelbase	Loco & tender: 91.50 ft (27.89 m)
Length	102 ft 7 in (31.27 m)
Axle load	59,000 lb (26,762 kg; 27 t)
Adhesive weight	354,000 lb (160,572 kg; 161 t)
Loco weight	496,500 lb (225,209 kg; 225 t)
Tender weight	310,599 lb (140,885 kg; 141 t)
Total weight	807,099 lb (366,094 kg; 366 t)
Fuel type	Coal
Fuel capacity	44,000 lb (19,958 kg; 20 t)
Water cap.	18,000 US gallons (68,000 L; 15,000 imp gal)
Firebox:
• Grate area	108.25 sq ft (10.057 m2)
Boiler	92 in (2,337 mm)
Boiler pressure	220 lbf/in2 (1.52 MPa)
Heating surface:
• Firebox	591 sq ft (54.9 m2)
Superheater:;
• Heating area	2,560 sq ft (238 m2)
Cylinders	Three, two outside, one inside
Cylinder size	Outside (2): 27 in × 32 in (686 mm × 813 mm);; Inside (1): 27 in × 31 in (686 mm × 787 mm);
Valve gear	Gresley Conjugated
Maximum speed
Performance figures
Maximum speed	50 mph (80 km/h)
Tractive effort	96,646 lbf (429.9 kN)
Factor of adh.	3.66
Operators
Career
Operators	Union Pacific Railroad
Class	UP-1 through UP-5
Numbers	9000–9087
Retired	1953–1956
Preserved	One preserved (No. 9000), remainder scrapped
Disposition	No. 9000 on static display at the RailGiants Train Museum

The Union Pacific Railroad 9000 Class was a class of 88 steam locomotives, built by ALCO for the Union Pacific between 1926 and 1930.