NR01UA

Manual hydraulic pressure supply by NR01UA

The main function of the NR01UA is to supply hydraulic oil into the aircraft system by manual operation. The operator moves the pump handle through full strokes, and the piston mechanism draws fluid from the inlet line and pushes it into the pressure line. The pump is designed to work with high hydraulic pressure and can be used to operate or check individual hydraulic consumers when the main pumps are not active. This makes it useful both onboard and in technical maintenance work.

Two-stage operation of NR01UA

The NR01UA works with a two-stage pumping system. At low pressure, the first stage provides higher delivery, allowing the system to be filled or moved faster. When resistance increases, the pump automatically switches to the second stage, where delivery is lower but pressure is higher. The switching pressure is in the range of 45–75 kgf/cm² according to the supplied data. The operator does not need to change the mode manually, which simplifies use during emergency or ground service operations.

NR01UA pressure capability

The pump is intended for high-pressure hydraulic systems. The nominal working pressure is 250 kgf/cm², while maximum / overload pressure may reach 350 kgf/cm² according to the supplied data. This pressure range allows the NR01UA to support aircraft hydraulic circuits that require significant force for actuation or testing. During maintenance, pressure must be monitored carefully, because exceeding approved limits can damage hydraulic lines, seals, actuators or connected equipment.

Working fluids for NR01UA

The NR01UA is designed for aviation hydraulic fluids such as AMG-10 or 7-50S3, depending on the aircraft hydraulic system documentation. Correct fluid selection is important because seals, valves and internal piston surfaces are matched to approved working fluids. Contaminated oil, incompatible fluid or air in the inlet line can reduce pump efficiency and damage internal components. Before installation or use, the working fluid type must be checked against the aircraft maintenance manual.

Aircraft application of NR01UA

The NR01UA is used on a wide range of Soviet and Russian aircraft. According to the supplied data, applications include An-124, Tu-95, Tu-154, Su-24, Su-27, Su-30, Su-34, Su-35, Yak-40, as well as Mi-8MTV and Mi-17 helicopters. The exact installation and role depend on the hydraulic system layout of each aircraft. In some systems, the pump is used for emergency pressure supply; in others, it may be used mainly for maintenance, checking or manual actuation.

Ground maintenance and non-aircraft use of NR01UA

Besides onboard aircraft use, the NR01UA can be used by maintenance personnel for ground checks of hydraulic equipment. Because of its compact size and ability to generate high pressure, similar manual pumps are also used in workshops for test benches or small hydraulic presses. For non-aircraft applications, pressure control, safety valve protection, correct fittings and compatible hydraulic oil are essential. The pump should not be used in improvised systems without understanding its pressure capability.

Supply and documentation for NR01UA

For procurement, the pump should be requested by its full designation: NR01UA / НР01ЮА. Since it is an aircraft hydraulic component, condition and documentation matter. Before use, the pump should be checked for delivery per handle cycles, automatic stage switching, maximum pressure, inlet pressure, leakage, handle operation and compatibility with the hydraulic fluid. For aircraft installation, passport, storage records, acceptance marks or repair documentation should be requested whenever available.