81-760/761

81-760/761 (Oka, Russian: Ока́, IPA: [ɐˈka]) is a model of subway car used on the Moscow Metro and the Baku Metro. It was designed by Metrovagonmash and is manufactured by Metrovagonmash and Tver Carriage Works.

81-760/761
81-760/761 "Oka" at the depot
In service2012-present
ManufacturerTransmashholding (Russia)
Built atMetrovagonmash (Russia)
Family name81-...
Replaced81-717/714
Constructed2010-2016
Entered service2012
Operator(s)Moskovsky Metropoliten
Baku Metro
Line(s) servedMoscow Metro:
 Kalininskaya line
 Solntsevskaya line
 Serpukhovsko–Timiryazevskaya line
 Bolshaya Koltsevaya line
Baku Metro:
Line 1, Line 2
Specifications
Car length20.12 m (66 ft 18 in)/19.14 m (62 ft 9 12 in)
Width2.69 m (8 ft 9 78 in)
Height3.68 m (12 ft 78 in)
Maximum speed90 km/h (56 mph)
Weight38 t (37 long tons; 42 short tons)/36 t (35 long tons; 40 short tons)
Traction system4 AC asynchronous motors TADV-280-4 U2, DTA-170 or DATM-2 U2
Power output680 kW (910 hp)
Acceleration1.3 m/s2 (4.3 ft/s2)
Deceleration1.1 m/s2 (3.6 ft/s2)
Electric system(s)825 V DC
Bogies2 two-axle bogies
Braking system(s)Dynamic brakes (rheostatic and regenerative), electro-pneumatic
Coupling systemScharfenberg coupler
Multiple workingMin 2x 81-760 car, max 81-760 + 6x 81-761 + 81-760 cars. Train + train configuration is not available.
Track gauge1,520 mm (4 ft 11 2732 in) Russian gauge
1,435 mm (4 ft 8 12 in) standard gauge
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