Hydraulic line repair data

Hitachi ZX120 Hose Repair Data

Hitachi ZX120 currently has 102 published hose records for checking length, hose specification, left and right fittings, part number, and diagram pipe number.

Hoses: 102 records
Full specifications: 102 records
Systems: 15 systems
Length range: 300–4,780 mm

Hose repair details

Hose Length and Fitting List

Showing 36 representative records. Return to the finder for a more specific search.

Diagram Pipe No. 17A

4441179

Installation route: 液压油箱~进回油阀

Length: 3,400 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. 11

4460593

Installation route: 回转马达~回油铁管(分配阀)

Length: 800 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. 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. 11

4285464

Installation route: 大臂油缸

Length: 710 mm
Specification: DN13;4SP-08;41.5MPa
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. 13

9199370

Installation route: 模式转换阀~中转接头

Length: 1,600 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. 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. 26

4442331

Installation route: 分配阀左~分配阀左

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. 26A

4447637

Installation route: 模式转换阀~中转接头

Length: 1,500 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. 1

4227083

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

Length: 340 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. 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. 9A

4436269

Installation route: Left boom-cylinder lock valve → right boom-cylinder lock valveOriginal Chinese: 左大臂油缸锁止阀~右大臂油缸锁止阀

Length: 350 mm
Specification: DN10;1SN-06;18MPa
Left fitting: 90°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. 37A

4437388

Installation route: 电磁阀~中转接头

Length: 500 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. 16A

4370423

Installation route: Left boom-cylinder grease lineOriginal Chinese: 左大臂油缸黄油管

Length: 2,130 mm
Specification: DN6;1SN-4;10.5MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 公制卡套式

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Diagram Pipe No. 23

4438290

Installation route: 右手柄~进回油阀

Length: 1,950 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. 24

4370429

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

Length: 2,850 mm
Specification: DN5;2层纤维-3;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 公制卡套式

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Diagram Pipe No. 25

4472408

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

Length: 340 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. 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. 4

4332943

Installation route: 回转接头~回油铁管(分配阀)

Length: 1,400 mm
Specification: DN13;2SN-08;27.5MPa
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. 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. 33

4453226

Installation route: 左手柄~中转接头

Length: 2,550 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. 44

4436352

Installation route: 电磁阀~电磁阀(快换)

Length: 600 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. 3

4265833

Installation route: 大臂(前段)~大臂(后段)

Length: 1,300 mm
Specification: DN19;4SP-12;31Mpa
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. 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. 28

4453230

Installation route: 右手柄~中转接头

Length: 2,450 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. 34

4453227

Installation route: 左手柄~中转接头

Length: 2,600 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. 29A

4427838

Installation route: 液压油箱~中转接头

Length: 620 mm
Specification: DN6;2层纤维-4;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. 27A

4447638

Installation route: 模式转换阀~中转接头

Length: 1,600 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

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. 8

4601514

Installation route: 大臂(快换)~小臂(快换)

Length: 1,900 mm
Specification: DN10;2SN-06;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. 8A

4449711

Installation route: 铲斗油缸黄油管

Length: 2,800 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

4436293

Installation route: 液压泵~先导滤芯

Length: 500 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. 11

4447483

Installation route: Swivel joint → travel motorOriginal Chinese: 回转接头~行走马达

Length: 1,900 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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Narrow the selection

Control Lever25 hoses Attachments22 hoses Grease Lines11 hoses Hydraulic Pump10 hoses Attachments – Breaker6 hoses Attachments – Quick Coupler5 hoses Swivel Joint4 hoses Hydraulic Tank4 hoses Control Valve3 hoses Boom Assembly3 hoses Solenoid Valve3 hoses Swing Motor2 hoses Attachments – Lock Valve2 hoses

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 ZX120?

The current published data covers 15 systems and 102 hose records. Systems with more listed records include: Control Lever (25 hoses), Attachments (22 hoses), Grease Lines (11 hoses), Hydraulic Pump (10 hoses), Attachments – Breaker (6 hoses), Attachments – Quick Coupler (5 hoses).

What is the hose length range for Hitachi ZX120?

Based on published records with valid lengths, the range is 300–4,780 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi ZX120?

The most frequent raw specifications in the current published records are: DN10;1SN-06;18MPa (25 records), DN10;1SN-6;7Mpa (18 records), DN6;1SN-4;7Mpa (15 records), DN6;1SN-04;22.5MPa (11 records), DN13;2SN-08;27.5MPa (4 records). Verify the specification together with length, pressure, and fitting details.

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

Each record keeps the left and right fitting descriptions separate. Current examples: 4441179: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4460593: left 美制内螺纹74°内锥; right 美制内螺纹74°内锥; 4442331: left 美制内螺纹74°内锥; right 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 ZX120 hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 17A (4441179), Pipe No. 11 (4460593), Pipe No. 29 (4442331), Pipe No. 11 (4285464). Open a record to compare its installation position with the linked manual page.

Hose Length and Fitting List

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Common Repair Questions