Hydraulic line repair data

Hitachi ZX120 Attachments Hose List

Hitachi ZX120 Attachments currently has 22 published hose records for checking length, hose specification, left and right fittings, part number, and diagram pipe number.

Hoses: 22 records
Full specifications: 22 records
Systems: 1 systems
Length range: 300–4,300 mm

Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 29

4442331

Installation route: 过渡阀块(推土铲)~过渡阀块(控制阀(推土铲))

Length: 500 mm
Specification: DN6;1SN-04;22.5MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 15

4489054

Installation route: 分节大臂踏板~进回油阀

Length: 350 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. 7

4462425

Installation route: 分配阀右~液压油箱

Length: 450 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. 20

4442429

Installation route: 分配阀下~过渡阀块(分配阀)

Length: 450 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 33A

4446706

Installation route: 分配阀右~电磁阀(流速切换)

Length: 2,050 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. 13

4437944

Installation route: 分配阀下~过渡阀块(推土铲)

Length: 650 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 9

4458318

Installation route: 分配阀下~过渡阀块(推土铲)

Length: 300 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. 21

4442333

Installation route: 过渡阀块(分配阀)~过渡阀块(推土铲)

Length: 400 mm
Specification: DN6;1SN-4;7Mpa
Left fitting: 90°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. 21

4442774

Installation route: 回转接头~控制阀(推土铲)

Length: 850 mm
Specification: DN12;4SP-8;34.5Mpa
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. 29

4480078

Installation route: 过渡阀块(控制阀(分节大臂))~过渡阀块(分节大臂)

Length: 300 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. 1A

4448876

Installation route: 分配阀右~流速切换阀

Length: 1,850 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. 13A

4605509

Installation route: 分节大臂踏板~过渡阀块(分节大臂踏板)

Length: 4,300 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 美制内螺纹74°内锥

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Diagram Pipe No. 23

9198870

Installation route: 推土铲手柄~进回油阀

Length: 650 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. 24A

4390647

Installation route: 大臂(辅助)~回油铁管(液压油箱)

Length: 1,950 mm
Specification: DN10;2SN-6;34.5MPa
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. 6

4452734

Installation route: 过渡阀块(分节大臂踏板)~过渡阀块(分节大臂)

Length: 400 mm
Specification: DN6;1SN-04;22.5MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 30

4351099

Installation route: 过渡阀块(推土铲)~接头(过渡阀块(推土铲))

Length: 650 mm
Specification: DN12;4SP-8;34.5Mpa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封

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Diagram Pipe No. 23A

4437944

Installation route: 推土铲手柄~进回油阀

Length: 650 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 12

4442340

Installation route: 过渡阀块(推土铲)~过渡阀块(控制阀(推土铲))

Length: 450 mm
Specification: DN6;1SN-4;7Mpa
Left fitting: 90°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. 13A

4437944

Installation route: 电磁阀~过渡阀块(分配阀)

Length: 650 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 13

4427152

Installation route: 控制阀(推土铲)~回油铁管(分配阀)

Length: 550 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 美制内螺纹74°内锥
Right fitting: 90°美制内螺纹74°内锥

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Diagram Pipe No. 0

4441254

Installation route: 推土铲手柄~过渡阀块(推土铲)

Length: 1,450 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. 32A

4446707

Installation route: 电磁阀(流速切换)~中转接头

Length: 1,750 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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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 ZX120 Attachments?

There are 22 published records. 22 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Hitachi ZX120 Attachments?

Based on published records with valid lengths, the range is 300–4,300 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi ZX120 Attachments?

The most frequent raw specifications in the current published records are: DN6;1SN-4;7Mpa (8 records), DN10;1SN-06;18MPa (6 records), DN10;1SN-6;7Mpa (3 records), DN12;4SP-8;34.5Mpa (2 records), DN6;1SN-04;22.5MPa (2 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi ZX120 Attachments?

Each record keeps the left and right fitting descriptions separate. Current examples: 4442331: left 美制内螺纹74°内锥; right 美制内螺纹74°内锥; 4489054: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4462425: left 美制内螺纹37°内锥; 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 ZX120 Attachments hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 29 (4442331), Pipe No. 15 (4489054), Pipe No. 7 (4462425), Pipe No. 20 (4442429). Open a record to compare its installation position with the linked manual page.