Hydraulic line repair data

Hitachi EX50UNA Boom Assembly Hose List

Coverage details

Hoses: 3 records
Full specifications: 3 records
Systems: 1 systems
Length range: 1,000–1,790 mm

Current system

Find a hose in this system

Use the number on the diagram, a part number, connection point, length, hose size, or fitting.

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 2

4426422

Installation route: 大臂油缸

Length: 1,000 mm
Specification: DN12;2SN-8;27.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 英制外螺纹30°内锥

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Diagram Pipe No. 3

4426460

Installation route: 大臂油缸

Length: 1,170 mm
Specification: DN12;2SN-8;27.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 英制外螺纹30°内锥

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Diagram Pipe No. 37

4426463

Installation route: 小臂油缸

Length: 1,790 mm
Specification: DN12;2SN-8;27.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 英制外螺纹30°内锥

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Diagram Pipe No. 39

4426451

Installation route: 大臂左5

Length: 3,150 mm
Specification: DN12;2SN-8;27.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 90°英制内螺纹30°外锥

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Diagram Pipe No. 33

4426447

Installation route: 大臂左1

Length: 1,950 mm
Specification: DN12;2SN-8;27.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 90°英制内螺纹30°外锥

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Diagram Pipe No. 32

4426446

Installation route: 大臂左4

Length: 2,030 mm
Specification: DN12;2SN-8;27.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 90°英制内螺纹30°外锥

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Diagram Pipe No. 40

4426452

Installation route: 大臂左6

Length: 3,010 mm
Specification: DN12;2SN-8;27.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 90°英制内螺纹30°外锥

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Diagram Pipe No. 38

4426450

Installation route: 大臂左3

Length: 3,040 mm
Specification: DN10;2SN-6;27.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 90°英制内螺纹30°外锥

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Diagram Pipe No. 37

4426449

Installation route: 大臂左2

Length: 3,120 mm
Specification: DN10;2SN-6;27.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 90°英制内螺纹30°外锥

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Diagram Pipe No. 32

4426462

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length: 890 mm
Specification: DN10;2SN-6;27.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 英制内螺纹30°外锥

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Diagram Pipe No. 31

4426445

Installation route: 大臂摆动油缸后

Length: 1,400 mm
Specification: DN10;2SN-6;20.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 90°英制内螺纹30°外锥

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Diagram Pipe No. 30

4426444

Installation route: 大臂摆动油缸前

Length: 1,580 mm
Specification: DN10;2SN-6;20.5MPa
Left fitting: 英制内螺纹30°外锥
Right fitting: 90°英制内螺纹30°外锥

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Based on current published data

Common Repair Questions

Questions appear only when a published record or linked PDF page provides the answer.

How many hoses are currently listed for Hitachi EX50UNA Boom Assembly?

There are 3 published records. 3 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Hitachi EX50UNA Boom Assembly?

Based on published records with valid lengths, the range is 1,000–1,790 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX50UNA Boom Assembly?

The most frequent raw specifications in the current published records are: DN12;2SN-8;27.5MPa (3 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX50UNA Boom Assembly?

Each record keeps the left and right fitting descriptions separate. Current examples: 4426422: left 英制内螺纹30°外锥; right 英制外螺纹30°内锥; 4426460: left 英制内螺纹30°外锥; right 英制外螺纹30°内锥; 4426463: left 英制内螺纹30°外锥; right 英制外螺纹30°内锥. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Hitachi EX50UNA Boom Assembly hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 2 (4426422), Pipe No. 3 (4426460), Pipe No. 37 (4426463). Open a record to compare its installation position with the linked manual page.