Length: 750 mm
Specification: DN25;4SH-16;38.8MPa
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. 27

4304477

Installation route: 液压油箱~接线板(分配阀旁)

Length: 1,900 mm
Specification: DN12;1SN-8;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. 5

4678796

Installation route: 行走马达~铁管(行走马达)

Length: 1,200 mm
Specification: DN32;4SP-20;27.5MPa
Left fitting: 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 33

4475999

Installation route: 接线板(分配阀旁)~接线板(液压油箱前)

Length: 3,050 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. 21

4157679

Installation route: 回转马达~排油阀

Length: 1,100 mm
Specification: DN19;4层纤维-12;3.5MPa
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. 28

4291381

Installation route: 大臂黄油管

Length: 1,100 mm
Specification: DN6;1SN-4;7MPa
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. 25

4158042

Installation route: Arm-cylinder grease lineOriginal Chinese: 小臂油缸黄油管

Length: 650 mm
Specification: DN6;1SN-4;7MPa
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. 20

4690544

Installation route: 接线板(手柄)~接线板(液压油箱前)

Length: 1,250 mm
Specification: DN10;1SN-6;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 45°美制内螺纹37°内锥

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Diagram Pipe No. 22

4722325

Installation route: 过渡阀块(黄油)~过渡阀块(大臂下)

Length: 3,750 mm
Specification: DN5;2层纤维-3;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°公制卡套式

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Diagram Pipe No. 90

4204180

Installation route: 分配阀上左~分配阀前

Length: 780 mm
Specification: DN6;1SN-4;7Mpa
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. 68

4445775

Installation route: 中转接头~分配阀上左

Length: 670 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. 62

4371368

Installation route: 中转接头~接线板(分配阀旁)

Length: 2,250 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. 19

4690543

Installation route: 接线板(手柄)~接线板(液压油箱前)

Length: 1,250 mm
Specification: DN10;1SN-6;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 45°美制内螺纹37°内锥

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Diagram Pipe No. 21

4298000

Installation route: 分配阀下右~电磁阀(分配阀旁)

Length: 840 mm
Specification: DN6;1SN-4;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. 1

4664183

Installation route: 左手柄~进回油阀

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. 27

4347824

Installation route: Bucket cylinderOriginal Chinese: 铲斗油缸

Length: 2,700 mm
Specification: DN38;6SP-24;34.5MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 8

4636420

Installation route: 液压泵上~液压泵下

Length: 600 mm
Specification: DN10;1SN-6;7Mpa
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. 70

4701767

Installation route: 中转接头~分配阀右

Length: 1,220 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. 8

4454680

Installation route: 小臂(背部)~过渡阀块(装载斗)

Length: 2,015 mm
Specification: DN32;6SP-20;34.5MPa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 24

4022547

Installation route: 大臂油缸黄油管

Length: 450 mm
Specification: DN6;1SN-4;7MPa
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. 22

4722325

Installation route: 过渡阀块(黄油)~过渡阀块(大臂下)

Length: 3,750 mm
Specification: DN5;2层纤维-3;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°公制卡套式

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Diagram Pipe No. 20

4315336

Installation route: 黄油泵~过渡阀块(黄油)

Length: 800 mm
Specification: DN10;2SN-6;20.5MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

View full repair specifications

Machine literature

Related manuals

Use these manuals to identify the machine and compare the hose records below. Available files can be opened here.

Product brochure

hitachi-ex1200-7-product-brochure-3167130dcbb2

Model specifications

View or download manual

Product brochure

hitachi-ex1200-7-product-brochure-a510910b4fd6

Model specifications

View or download manual

Product literature

hitachi-ex1200-7-product-literature-aefb90318bf2

Model specifications

View or download manual

Workshop guide

Finding the correct hydraulic hose for Hitachi EX1200-7

Start with the machine and route

For Hitachi EX1200-7, identify the exact model and hydraulic system on the machine first. A part number or diagram pipe number is the fastest way to narrow a replacement hose; if neither is visible, compare the installation route and the existing hose.

Read the dimensions before cutting

Check whether a listed dimension is finished assembly length, hose-only length, or cut length. These are not interchangeable. Confirm hose specification and pressure rating, then compare both ends separately: thread, sealing seat, size, angle, and orientation.

Records to compare

4722363680 mm · DN10;1SN-6;7Mpa · 中转接头~分配阀上左
43460721,980 mm · DN10;1SN-6;7Mpa · 接线板(液压油箱前)~接线板(液压油箱后)
44554381,400 mm · DN6;1SN-04;22.5MPa · 分配阀右~电磁阀(分配阀旁)

Use the drawing as a location check

Where an installation drawing or manual figure is available, match its callout to the part number and physical route. A hydraulic circuit diagram explains connections but does not show the exact routing of a hose on the machine. Take the old hose or clear end-fitting photographs to the workshop if any dimension is missing.

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 EX1200-7?

The current published data covers 10 systems and 79 hose records. Systems with more listed records include: Attachments (17 hoses), Grease Lines (17 hoses), Control Lever (13 hoses), Control Valve (12 hoses), Boom Assembly (4 hoses), Swivel Joint (4 hoses).

What is the hose length range for Hitachi EX1200-7?

Based on published records with valid lengths, the range is 300–3,750 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX1200-7?

The most frequent raw specifications in the current published records are: DN10;1SN-6;7Mpa (26 records), DN6;1SN-4;7Mpa (16 records), DN32;6SP-20;34.5MPa (7 records), DN10;1SN-06;18MPa (3 records), DN12;1SN-8;7Mpa (3 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX1200-7?

Each record keeps the left and right fitting descriptions separate. Current examples: 4722363: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4346072: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4455438: left 美制内螺纹74°内锥; right 90°美制内螺纹74°内锥. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Hitachi EX1200-7 hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 76 (4722363), Pipe No. 27 (4346072), Pipe No. 22 (4455438), Pipe No. 22 (4319150). Open a record to compare its installation position with the linked manual page.

Optional cross-check

Ask an AI search tool to check this repair data

The question is already written for this machine or hose. Use a tool with web search enabled; treat its answer as a starting point and verify on the machine.

ChatGPT Perplexity Claude Google AI Mode

See the exact question being sent

I am checking hydraulic hose repair information for "Hitachi EX1200-7 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/ex1200-7--4558313230302d37/

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.

Choose a system

Find a hose on this machine

Hose Length and Fitting List

Related manuals

hitachi-ex1200-7-product-brochure-3167130dcbb2

hitachi-ex1200-7-product-brochure-a510910b4fd6

hitachi-ex1200-7-product-literature-aefb90318bf2

Finding the correct hydraulic hose for Hitachi EX1200-7

Start with the machine and route

Read the dimensions before cutting

Records to compare

Use the drawing as a location check

Common Repair Questions

Ask an AI search tool to check this repair data