NR01UA

NR01UA as an aircraft manual hydraulic pump

The NR01UA is a two-stage aircraft manual piston hydraulic pump designed for backup supply of working fluid into aircraft hydraulic systems. It is used when the main hydraulic pumps are unavailable, and also during ground maintenance or functional checks. The pump allows technical personnel to manually create hydraulic pressure without starting the main hydraulic power source. In aircraft operation, this type of unit is important as a reserve pressure source for service, emergency and maintenance procedures.

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.

Product Type: Two-stage aircraft manual hydraulic pump
Designation: NR01UA
Alternative Designations: НР01ЮА; НР-01ЮА; NR01UA; NR-01UA
Function: Backup / manual supply of hydraulic fluid into aircraft hydraulic systems
Application / Where Used: Aircraft hydraulic systems; ground maintenance and hydraulic equipment checks
System / Installation Area: Emergency / auxiliary hydraulic pressure supply circuit
Compatible Aircraft / Equipment: An-124, Tu-95, Tu-154, Su-24, Su-27, Su-30, Su-34, Su-35, Yak-40, Mi-8MTV, Mi-17 according to supplied data
Civil / Workshop Use: Hydraulic presses, test benches and maintenance equipment depending on configuration
Pump Type: Manual piston hydraulic pump
Stage System: Two-stage piston system
Stage Switching: Automatic switching from low-pressure / high-delivery stage to high-pressure stage
Stage Switching Pressure: 45–75 kgf/cm²
Nominal Working Pressure: 250 kgf/cm²
Maximum / Overload Pressure: 350 kgf/cm²
Working Fluid: AMG-10 aviation hydraulic oil, GOST 6794-75, or 7-50S3 depending on system documentation
Inlet Pressure: 0.1–2.5 kgf/cm²
Delivery: Not less than 100 cm³ per 10 full pumping cycles
Operating Temperature Range: −60 to +70 °C
Weight: Approx. 3.2–3.5 kg
Inspection / Testing: Delivery check, maximum pressure check, automatic stage switching check, inlet pressure check, handle movement check, leakage and seal inspection

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For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.