Length: 550 mm
Specification: DN12;1层纤维-8;10.5MPa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 46

4203092

Installation route: 中转接头~分配阀上

Length: 1,400 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 43

4203089

Installation route: 中转接头~分配阀下

Length: 1,180 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 49

4203095

Installation route: 中转接头~分配阀下

Length: 1,050 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 16

4203166

Installation route: 液压泵~电磁阀(液压泵)

Length: 900 mm
Specification: DN6;2层纤维-4;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 10

4203048

Installation route: 行走踏板~中转接头

Length: 1,890 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 30

4208492

Installation route: 右手柄~接线板(中转接头)

Length: 1,870 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 3

4210341

Installation route: 备用踏板~行走踏板

Length: 1,200 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 36

4208489

Installation route: 左手柄~进回油阀

Length: 870 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 8

4203046

Installation route: 行走踏板~中转接头

Length: 1,760 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 47

4203093

Installation route: 中转接头~分配阀下

Length: 1,110 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 54

4203098

Installation route: 分配阀上~接线板(中转接头)

Length: 1,380 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制外螺纹37°外锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 44

4203090

Installation route: 中转接头~分配阀下

Length: 1,030 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 29

4203102

Installation route: 液压泵~电磁阀

Length: 550 mm
Specification: DN6;1SN-04;7MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 10

4203088

Installation route: 液压油箱~进回油阀

Length: 1,650 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 55

4203099

Installation route: 分配阀下~接线板(中转接头)

Length: 1,230 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制外螺纹37°外锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 12

4203058

Installation route: 行走踏板~进回油阀

Length: 990 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 33

4197724

Installation route: 液压泵~吸油铁管

Length: 750 mm
Specification: DN19;2SN-12;21.5MPa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 37

4218085

Installation route: 电磁阀~电磁阀(液压泵)

Length: 4,800 mm
Specification: DN10;1SN-6;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 66

4204183

Installation route: 分配阀上~液压油箱

Length: 890 mm
Specification: DN6;2层纤维-4;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 1

4210352

Installation route: 备用踏板~接线板(中转接头)

Length: 2,030 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 9

4203047

Installation route: 行走踏板~中转接头

Length: 1,780 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 45

4203091

Installation route: 中转接头~分配阀上

Length: 1,330 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 5

4203122

Installation route: 小臂油缸

Length: 780 mm
Specification: DN25;4SP-16;32Mpa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封

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Diagram Pipe No. 32

4208494

Installation route: 左手柄~接线板(中转接头)

Length: 1,900 mm
Specification: DN10;1SN-6;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 22

4203105

Installation route: 分配阀上~回转马达

Length: 500 mm
Specification: DN6;2层纤维-4;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 11

4203049

Installation route: 行走踏板~中转接头

Length: 1,930 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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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.

Which systems and hoses are currently listed for Hitachi EX270LC?

The current published data covers 10 systems and 49 hose records. Systems with more listed records include: Control Lever (11 hoses), Control Valve (10 hoses), Hydraulic Pump (7 hoses), Attachments (7 hoses), Pedal (6 hoses), Solenoid Valve (3 hoses).

What is the hose length range for Hitachi EX270LC?

Based on published records with valid lengths, the range is 460–4,800 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX270LC?

The most frequent raw specifications in the current published records are: DN10;1层纤维-6;14MPa (27 records), DN6;2层纤维-4;14MPa (10 records), DN10;1SN-6;7Mpa (2 records), DN25;4SP-16;32Mpa (2 records), DN6;1SN-4;14MPa (2 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX270LC?

Each record keeps the left and right fitting descriptions separate. Current examples: 4203085: left 美制内螺纹37°内锥; right 90°美制内螺纹37°内锥; 4226384: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4203100: left 美制外螺纹37°外锥; right 90°美制内螺纹37°内锥. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Hitachi EX270LC hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 27 (4203085), Pipe No. 11 (4226384), Pipe No. 56 (4203100), Pipe No. 2 (4210340). Open a record to compare its installation position with the linked manual page.

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I am checking hydraulic hose repair information for "Hitachi EX270LC Hose Repair Data". Use web search and cite a source for every factual point. Compare this HoseSeek page with manufacturer manuals and reliable parts documentation: https://www.hoseseek.com/machines/hitachi/ex270lc--45583237304c43/

Verify, where applicable:
1. Exact machine model and any serial-number range.
2. Hydraulic system and installation route.
3. Hose part number and diagram pipe number.
4. Finished length, hose specification, and pressure rating.
5. Both end fittings, including thread, sealing seat, size, and angle.
6. Installation-diagram position and routing.

State explicitly what you could not verify. Do not infer a missing dimension or fitting. End with a short on-machine checklist for a hose repair technician.

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