VR-14 Main Gearbox is designed for operation as part of a propulsion unit of a helicopter Mi-8MT, Mi-14, Mi-17.


Transmission ratio
to a shaft of a main rotor  0,0128
to a shaft of an antitorque rotor 0,1729
Input shaft speed, nominal, rpm 15000
Power transmitted by a Main Gearbox, hp:
maximal from each engine  2200
at take-off mode   2x2000
at nominal mode  2x1700
Weight, kg
Dimensions, mm:  
Length 1200
Width 880
Height 1760
Total Service Life, hours  6000
Time Between Overhaul
with extension up to 2000 according to technical conditions
Storage time, years 10

JSC UWCA has been performing the overhaul of VR-14 Main Gearboxes since 1999. Main Gearboxes of VR family have good reliability and resource rates.