NR01/1

Manual pressure generation by NR01/1

The NR01/1 creates hydraulic pressure by hand operation. The operator moves the handle through repeated cycles, and the internal piston system draws working fluid from the inlet line and pushes it into the pressure line. The pump is designed to develop high pressure, up to 350 kgf/cm² in the first variant according to the passport data. This allows it to support emergency hydraulic operations and maintenance procedures where pressure must be built without operation of the main engine-driven pumps.

Two-stage operation of the NR01/1 pump

A key feature of the NR01/1 is its automatic two-stage delivery system. At low pressure, the pump provides a higher flow rate for faster filling or movement of hydraulic fluid. When resistance in the system increases, the pump automatically switches to the high-pressure stage. According to the supplied passport, switching from two-stage operation to first-stage pressure operation occurs within the pressure range of 45–75 kgf/cm² for the first variant and 45–55 kgf/cm² for the second variant. This allows the operator to continue building pressure without manual mode selection.

NR01/1 piston design and operating force

The NR01/1 uses a dual-piston layout with automatic switching between delivery stages. The handle force remains limited during operation: the supplied data indicate a maximum handle force of 18 kg. This is important for practical use because the pump may need to be operated manually during maintenance or emergency procedures. The pump is compact, but it is designed for high hydraulic pressure, so the condition of the handle mechanism, pistons, seals, valves and inlet line must be checked during service.

Working fluids for NR01/1

The NR01/1 can work with approved aviation hydraulic fluids. According to the supplied data, the pump is used with AMG-10 hydraulic fluid or 7-50S-3 fluid depending on the variant and system documentation. The passport also notes the second variant with AMG-10 according to GOST 6794-75. Working fluid selection must be confirmed by the hydraulic system where the pump is installed. Mixing incompatible fluids or using contaminated oil can damage seals, valves and internal piston surfaces.

Aircraft and ground maintenance applications of NR01/1

The NR01/1 is used in aircraft hydraulic systems and ground servicing operations. It may be applied on aircraft such as Il-76, Tu-154, Su-27, Mi-8 and other aircraft where the corresponding hydraulic architecture allows its use. The pump can be used for emergency pressure supply, functional checks, maintenance operations and manual actuation of hydraulic consumers. It is also valued outside aviation for hydraulic test benches and small high-pressure hydraulic presses, but non-aircraft use still requires correct fluid, fittings and pressure control.

Compatibility with NR01 and installation considerations

The NR01/1 is described as interchangeable by mounting points with the earlier NR01 modification. This is important when replacing older units, but interchangeability should still be checked by aircraft documentation, hydraulic connection layout and operating pressure requirements. During installation, the inlet pressure, outlet line, mounting points, handle travel and leakage should be inspected. The passport also warns that running the manual pump dry without internal preservation for more than 24 hours is prohibited.

Supply and documentation for NR01/1

For supply, the pump should be requested by its full designation: NR01/1 / НР01/1. The uploaded passport shows a 2022 production / acceptance record for a specific unit and includes acceptance and conservation pages. For aircraft use, passport, storage records and acceptance marks are important. Before installation, the pump should be checked for delivery per hand cycles, maximum pressure, automatic stage switching, inlet pressure range, leakage, handle force and compatibility with the aircraft hydraulic system.