Chicago, Burlington and Quincy O-5 class

Specifications
Specifications
Configuration:;
• Whyte	4-8-4
• UIC	2′D2′ h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	37 in (940 mm)
Driver dia.	74 in (1,880 mm)
Trailing dia.	43 in (1,092 mm)
Wheelbase	Loco & tender: 90.69 ft (27.64 m)
Length	103 ft 3+1⁄8 in (31.47 m) (O-5); 107 ft 3⁄8 in (32.62 m) (O-5A/B)
Width	10 ft 7 in (3.23 m)
Height	16 ft 2 in (4.93 m)
Axle load	69,340 lb (31,450 kg; 31.45 t) (O-5); 69,757.5 lb (31,641.5 kg; 31.6415 t) (O-5A/B)
Adhesive weight	272,000 lb (123,000 kg; 123 t) (O-5); 281,410 lb (127,650 kg; 127.65 t) (O-5A/B)
Loco weight	454,600 lb (206,200 kg; 206.2 t) (O-5); 476,050 lb (215,930 kg; 215.93 t) (O-5A/B)
Tender weight	337,000 lb (153,000 kg; 153 t) (O-5); 362,000 lb (164,000 kg; 164 t) (O-5A/B)
Total weight	791,600 lb (359,100 kg; 359.1 t) (O-5); 838,050 lb (380,130 kg; 380.13 t) (O-5A/B)
Fuel type	Coal; Fuel oil (O-5B)
Fuel capacity	24 t (24 long tons; 26 short tons) (O-5); 27 t (27 long tons; 30 short tons) (O-5A); 7,300 US gal (28,000 L; 6,100 imp gal) (O-5B)
Water cap.	18,000 US gal (68,000 L; 15,000 imp gal)
Firebox:
• Grate area	106.50 sq ft (9.894 m2)
Boiler pressure	250 lbf/in2 (1.72 MPa)
Heating surface:
• Firebox	439 sq ft (40.8 m2) (O-5); 433 sq ft (40.2 m2) (O-5A/B)
Superheater:;
• Type	Type E
• Heating area	2,403 sq ft (223.2 m2)
Cylinders	Two
Cylinder size	28 in × 30 in (711 mm × 762 mm)
Valve gear	Baker
Valve type	Piston valves

Type and origin
Type and origin
Power type	Steam
Builder	Baldwin Locomotive Works, CB&Q
Serial number	61443-61444, 61496-61499, 61522-61523,
Build date	August-October 1930, 1936-1940
Total produced	36

Chicago Burlington and Quincy O-5 class
Chicago Burlington and Quincy O-5 class
	Chicago, Burlington and Quincy Railroad 5633 in Douglas, WY, USA. Built 1940 until 1956 in service, moved to Douglas in 1962
Power type
Type and origin
Power type	Steam
Builder	Baldwin Locomotive Works, CB&Q
Serial number	61443-61444, 61496-61499, 61522-61523,
Build date	August-October 1930, 1936-1940
Total produced	36
Configuration:;
Specifications
Configuration:;
• Whyte	4-8-4
• UIC	2′D2′ h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	37 in (940 mm)
Driver dia.	74 in (1,880 mm)
Trailing dia.	43 in (1,092 mm)
Wheelbase	Loco & tender: 90.69 ft (27.64 m)
Length	103 ft 3+1⁄8 in (31.47 m) (O-5); 107 ft 3⁄8 in (32.62 m) (O-5A/B)
Width	10 ft 7 in (3.23 m)
Height	16 ft 2 in (4.93 m)
Axle load	69,340 lb (31,450 kg; 31.45 t) (O-5); 69,757.5 lb (31,641.5 kg; 31.6415 t) (O-5A/B)
Adhesive weight	272,000 lb (123,000 kg; 123 t) (O-5); 281,410 lb (127,650 kg; 127.65 t) (O-5A/B)
Loco weight	454,600 lb (206,200 kg; 206.2 t) (O-5); 476,050 lb (215,930 kg; 215.93 t) (O-5A/B)
Tender weight	337,000 lb (153,000 kg; 153 t) (O-5); 362,000 lb (164,000 kg; 164 t) (O-5A/B)
Total weight	791,600 lb (359,100 kg; 359.1 t) (O-5); 838,050 lb (380,130 kg; 380.13 t) (O-5A/B)
Fuel type	Coal; Fuel oil (O-5B)
Fuel capacity	24 t (24 long tons; 26 short tons) (O-5); 27 t (27 long tons; 30 short tons) (O-5A); 7,300 US gal (28,000 L; 6,100 imp gal) (O-5B)
Water cap.	18,000 US gal (68,000 L; 15,000 imp gal)
Firebox:
• Grate area	106.50 sq ft (9.894 m2)
Boiler pressure	250 lbf/in2 (1.72 MPa)
Heating surface:
• Firebox	439 sq ft (40.8 m2) (O-5); 433 sq ft (40.2 m2) (O-5A/B)
Superheater:;
• Type	Type E
• Heating area	2,403 sq ft (223.2 m2)
Cylinders	Two
Cylinder size	28 in × 30 in (711 mm × 762 mm)
Valve gear	Baker
Valve type	Piston valves
Maximum speed
Performance figures
Maximum speed	Over 75 mph (121 km/h)
Power output	4,100 hp (3,100 kW)
Tractive effort	67,541 lbf (300.44 kN); 80,741 lbf (359.15 kN) with booster
Factor of adh.	4.03 (O-5); 4.13 (O-5A/B)
Operators
Career
Operators	Chicago, Burlington and Quincy
Class	O-5; O-5A; O-5B
Numbers	5600–5635
Retired	Mid to late 1950s
Preserved	Four preserved (Nos. 5614, 5629, 5631 and 5633)
Disposition	Nos. 5614, 5629, 5631 and 5633 on display, remainder scrapped

The Chicago Burlington and Quincy O-5 was a class of 36 4-8-4 "Northern" type steam locomotives built by the Baldwin Locomotive Works in 1930 and the Chicago, Burlington and Quincy Railroad (CB&Q) between 1936 and 1940 and operated by the CB&Q until the late 1950s.

The locomotives saw service pulling both freight and passenger trains and four have been preserved, all of which are on display.

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