SBB Ae 4/6

Specifications
Specifications
Configuration:;
• UIC	(1A) Bo (A1)
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Wheel diameter	1,350 mm (4 ft 5 in)
Trailing dia.	950 mm (3 ft 1 in)
Length	17,260 mm (56 ft 8 in) over buffers
Width	3,000 mm (9 ft 10 in)
Height	4,065 mm (13 ft 4 in)
Loco weight	105 tonnes (103 long tons; 116 short tons); 111 tonnes (109 long tons; 122 short tons) (rebuilt)
Electric system/s	15 kV 16.7 Hz AC Catenary
Current pickup(s)	Pantograph
Traction motors	Winterthur Universal Drive
MU working	Available
Train brakes	Air

Type and origin
Type and origin
Power type	Electric
Builder	Swiss Locomotive and Machine Works (SLM), Brown, Boveri & Cie (BBC), Maschinenfabrik Oerlikon (MFO), Société Anonyme des Ateliers de Sécheron (SAAS)
Build date	1941-1944
Total produced	12

Ae 4/6
Ae 4/6
	Be 4/6 number 10801
Power type
Type and origin
Power type	Electric
Builder	Swiss Locomotive and Machine Works (SLM), Brown, Boveri & Cie (BBC), Maschinenfabrik Oerlikon (MFO), Société Anonyme des Ateliers de Sécheron (SAAS)
Build date	1941-1944
Total produced	12
Configuration:;
Specifications
Configuration:;
• UIC	(1A) Bo (A1)
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Wheel diameter	1,350 mm (4 ft 5 in)
Trailing dia.	950 mm (3 ft 1 in)
Length	17,260 mm (56 ft 8 in) over buffers
Width	3,000 mm (9 ft 10 in)
Height	4,065 mm (13 ft 4 in)
Loco weight	105 tonnes (103 long tons; 116 short tons); 111 tonnes (109 long tons; 122 short tons) (rebuilt)
Electric system/s	15 kV 16.7 Hz AC Catenary
Current pickup(s)	Pantograph
Traction motors	Winterthur Universal Drive
MU working	Available
Train brakes	Air
Maximum speed
Performance figures
Maximum speed	125 km/h (78 mph); (110 km/h (68 mph) after rebuild)
Power output	Peak: 4,200 kW (5,600 hp)
Operators
Career
Operators	SBB
Numbers	10801-10812
Retired	1965-1983

The Ae 4/6 was a bogie locomotive class operated by the Schweizerischen Bundesbahnen (Swiss Federal Railways) (SBB). They were introduced in the 1940s and served until the 1980s.

Design

Designed as a lower powered complement to the Ae 8/14, the design of the Ae 4/6 was based on half of the last Ae 8/14, 11852, split in half with a second cab fitted.^[1] The locomotives were designed to operate singly or in pairs with multiple control.^[2]

Service

Replacing the older Be 4/6 and Ae 4/7 pulling Gotthard express trains, the locomotives served in frontline use until replaced by the Ae 6/6 in the 1960s. With a 375-tonne (369-long-ton; 413-short-ton) train, they could reach a speed of 75 km/h (47 mph) on a 26 percent gradient.^[3]

References

^ Leichty, Roman (1943). "Neue Lokomitiven de SBB". Die Lokomtiv (in German). 40 (5): 89.
^ Ransome-Wallis, Patrick (2001). Illustrated Encyclopedia of World Railway Locomotives. Mineola, NY: Dover Publications. p. 154.
^ Jeanmaire, Claude (1979). Die elektrischen und Diesel-Triebfahrzeuge schweizerischer Eisenbahnen:Die Lokomotiven der Schweizerischen Bundesbahnen (SBB). Vol. 2. Villigen: Verlag Eisenbahn.

[1] Leichty, Roman (1943). "Neue Lokomitiven de SBB". Die Lokomtiv (in German). 40 (5): 89.

[2] Ransome-Wallis, Patrick (2001). Illustrated Encyclopedia of World Railway Locomotives. Mineola, NY: Dover Publications. p. 154.

[3] Jeanmaire, Claude (1979). Die elektrischen und Diesel-Triebfahrzeuge schweizerischer Eisenbahnen:Die Lokomotiven der Schweizerischen Bundesbahnen (SBB). Vol. 2. Villigen: Verlag Eisenbahn.

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