Hydraulic accumulator
8A-5301-370-002
Price on request
Hydraulic accumulator
Partner Stock
Description
8A-5301-370-002 hydraulic accumulator in Mi-8 systems
The 8A-5301-370-002 is an aircraft hydraulic accumulator used in Mi-8 series helicopter systems. It is installed where the hydraulic circuit needs a pressure reserve and more stable working-fluid behavior during operation. The accumulator does not create pressure like a pump. It stores part of the pressure energy already present in the system and releases it back into the line when pressure starts to drop or fluctuate.
Pressure reserve function of 8A-5301-370-002
The main task of the 8A-5301-370-002 is to help the hydraulic circuit handle short pressure changes. These changes may appear when pumps change load, valves open or close, or actuators demand flow from the system. The accumulator absorbs part of the pressure pulse and provides a small reserve volume to the line. This makes the circuit less sensitive to sudden demand changes and helps connected hydraulic units work in a smoother mode.
8A-5301-370-002 in the Mi-8 hydraulic system
The 8A-5301-370-002 works inside a larger hydraulic installation. Around it are pumps, pipelines, filters, valves, fittings, hydraulic actuators and service connections. The accumulator does not control these components directly. Its role is to support the pressure condition of the line and compensate short-term pressure fluctuation. If system pressure is unstable, the reason is not always the accumulator itself. Charge pressure, leaks, pump output, valve operation, fluid contamination and connected hydraulic components should also be checked.
Nitrogen charging of 8A-5301-370-002
The 8A-5301-370-002 is a charged hydraulic accumulator. The gas side is charged with nitrogen, and the specified charging pressure is 30 ±2 kgf/cm². Nitrogen charging must be performed according to the maintenance procedure and applicable standard reference, including GOST 9239-59 where specified. Incorrect charge pressure can make the accumulator ineffective or cause abnormal hydraulic behavior, so this value should be checked before installation and during scheduled maintenance.
Mi-8, Mi-17 and Mi-171 application
The accumulator is used on Mi-8 family helicopters and may also appear in supply references for Mi-17 and Mi-171 configurations, depending on operator documentation and installed equipment standard. The same helicopter family can include different hydraulic layouts after repair, overhaul or modification. For correct supply, a general reference to “Mi-8” is not enough. The installed part number, system location and required accumulator variant should be checked against the aircraft spare parts catalog.
Identification of 8A-5301-370-002
The product may appear in several writing formats. In English export requests, the usual designation is 8A-5301-370-002. In Russian documentation, it may be written as 8А-5301-370-002, 8А-5301-370/2, 8А.5301.370-02 or 8А.5301.370.002. The marking on the cylinder may appear as 8А.5301.370.01. These variants should be checked carefully against the passport, installed-unit marking and aircraft catalog before confirming supply.
Related variant 8A-5301-370-001
The related variant 8A-5301-370-001 may appear in the same hydraulic system documentation. It should not be treated as automatically interchangeable with 8A-5301-370-002. A visually similar accumulator can differ by variant, charge data, documentation reference or system position. Before ordering, it is better to provide the part number, helicopter type, installation location and a photo of the marking if available.
Supply and documentation for 8A-5301-370-002
For procurement, the unit should be specified by the full designation 8A-5301-370-002, with Russian marking variants noted if needed. The passport name may be listed as hydraulic accumulator 8А-5301-370/2. The unit may be supplied new, from storage, repaired, overhauled or serviceable depending on availability. For aviation use, product passport, acceptance documents, test report or overhaul documentation should be confirmed before delivery.
Details
Product Type: Aircraft hydraulic accumulator
Designation: 8A-5301-370-002
Russian Designation: 8А-5301-370-002
Passport Name: Hydraulic accumulator 8А-5301-370/2
Cylinder Marking: Hydraulic accumulator 8А.5301.370.01
Code / Drawing Reference: 8А.5301.370-02; also referenced as 8А.5301.370.002
Alternative Variant: 8A-5301-370-001, interchangeability subject to catalog verification
Function: Pressure storage, pressure reserve and stabilization of working fluid
Application / Where Used: Aircraft hydraulic systems
System / Installation Area: Hydraulic system
Compatible Aircraft / Equipment: Mi-8 helicopter family; Mi-17 / Mi-171 configurations depending on documentation
Accumulator Capacity: 2.5 L
Working Pressure: 65 kgf/cm²
Minimum Pressure Reference: Not less than 28 kgf/cm², if specified for the applicable system condition
Nitrogen Charging Pressure: 30 ±2 kgf/cm²
Gas Charging: Nitrogen according to aircraft maintenance documentation; GOST 9239-59 where specified
Weight: Approx. 4.5 kg
Working Medium: Aircraft hydraulic fluid according to Mi-8 system documentation
Interchangeability / Replaceability: Must be confirmed by aircraft spare parts catalog and installed-unit marking
Condition: New / from storage / repaired / overhauled / serviceable depending on availability
Inspection / Testing: Cylinder inspection, marking check, leak check, pressure check, nitrogen charge check, fitting and thread inspection
Technical Documentation: Product passport, Mi-8 maintenance documentation, spare parts catalog, test / acceptance documents as applicable
Payment & delivery
All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.
In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.
Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.
Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.
Returns & Changes (Restocking Fee)
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.
- Description
- Details
- Payment & delivery
8A-5301-370-002 hydraulic accumulator in Mi-8 systems
The 8A-5301-370-002 is an aircraft hydraulic accumulator used in Mi-8 series helicopter systems. It is installed where the hydraulic circuit needs a pressure reserve and more stable working-fluid behavior during operation. The accumulator does not create pressure like a pump. It stores part of the pressure energy already present in the system and releases it back into the line when pressure starts to drop or fluctuate.
Pressure reserve function of 8A-5301-370-002
The main task of the 8A-5301-370-002 is to help the hydraulic circuit handle short pressure changes. These changes may appear when pumps change load, valves open or close, or actuators demand flow from the system. The accumulator absorbs part of the pressure pulse and provides a small reserve volume to the line. This makes the circuit less sensitive to sudden demand changes and helps connected hydraulic units work in a smoother mode.
8A-5301-370-002 in the Mi-8 hydraulic system
The 8A-5301-370-002 works inside a larger hydraulic installation. Around it are pumps, pipelines, filters, valves, fittings, hydraulic actuators and service connections. The accumulator does not control these components directly. Its role is to support the pressure condition of the line and compensate short-term pressure fluctuation. If system pressure is unstable, the reason is not always the accumulator itself. Charge pressure, leaks, pump output, valve operation, fluid contamination and connected hydraulic components should also be checked.
Nitrogen charging of 8A-5301-370-002
The 8A-5301-370-002 is a charged hydraulic accumulator. The gas side is charged with nitrogen, and the specified charging pressure is 30 ±2 kgf/cm². Nitrogen charging must be performed according to the maintenance procedure and applicable standard reference, including GOST 9239-59 where specified. Incorrect charge pressure can make the accumulator ineffective or cause abnormal hydraulic behavior, so this value should be checked before installation and during scheduled maintenance.
Mi-8, Mi-17 and Mi-171 application
The accumulator is used on Mi-8 family helicopters and may also appear in supply references for Mi-17 and Mi-171 configurations, depending on operator documentation and installed equipment standard. The same helicopter family can include different hydraulic layouts after repair, overhaul or modification. For correct supply, a general reference to “Mi-8” is not enough. The installed part number, system location and required accumulator variant should be checked against the aircraft spare parts catalog.
Identification of 8A-5301-370-002
The product may appear in several writing formats. In English export requests, the usual designation is 8A-5301-370-002. In Russian documentation, it may be written as 8А-5301-370-002, 8А-5301-370/2, 8А.5301.370-02 or 8А.5301.370.002. The marking on the cylinder may appear as 8А.5301.370.01. These variants should be checked carefully against the passport, installed-unit marking and aircraft catalog before confirming supply.
Related variant 8A-5301-370-001
The related variant 8A-5301-370-001 may appear in the same hydraulic system documentation. It should not be treated as automatically interchangeable with 8A-5301-370-002. A visually similar accumulator can differ by variant, charge data, documentation reference or system position. Before ordering, it is better to provide the part number, helicopter type, installation location and a photo of the marking if available.
Supply and documentation for 8A-5301-370-002
For procurement, the unit should be specified by the full designation 8A-5301-370-002, with Russian marking variants noted if needed. The passport name may be listed as hydraulic accumulator 8А-5301-370/2. The unit may be supplied new, from storage, repaired, overhauled or serviceable depending on availability. For aviation use, product passport, acceptance documents, test report or overhaul documentation should be confirmed before delivery.
Product Type: Aircraft hydraulic accumulator
Designation: 8A-5301-370-002
Russian Designation: 8А-5301-370-002
Passport Name: Hydraulic accumulator 8А-5301-370/2
Cylinder Marking: Hydraulic accumulator 8А.5301.370.01
Code / Drawing Reference: 8А.5301.370-02; also referenced as 8А.5301.370.002
Alternative Variant: 8A-5301-370-001, interchangeability subject to catalog verification
Function: Pressure storage, pressure reserve and stabilization of working fluid
Application / Where Used: Aircraft hydraulic systems
System / Installation Area: Hydraulic system
Compatible Aircraft / Equipment: Mi-8 helicopter family; Mi-17 / Mi-171 configurations depending on documentation
Accumulator Capacity: 2.5 L
Working Pressure: 65 kgf/cm²
Minimum Pressure Reference: Not less than 28 kgf/cm², if specified for the applicable system condition
Nitrogen Charging Pressure: 30 ±2 kgf/cm²
Gas Charging: Nitrogen according to aircraft maintenance documentation; GOST 9239-59 where specified
Weight: Approx. 4.5 kg
Working Medium: Aircraft hydraulic fluid according to Mi-8 system documentation
Interchangeability / Replaceability: Must be confirmed by aircraft spare parts catalog and installed-unit marking
Condition: New / from storage / repaired / overhauled / serviceable depending on availability
Inspection / Testing: Cylinder inspection, marking check, leak check, pressure check, nitrogen charge check, fitting and thread inspection
Technical Documentation: Product passport, Mi-8 maintenance documentation, spare parts catalog, test / acceptance documents as applicable
All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.
In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.
Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.
Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.
Returns & Changes (Restocking Fee)
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.