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| Price | Negotiable price |
| MOQ | 1 piece |
| Delivery Time | 1-7days |
| Brand | Belparts |
| Place of Origin | Guangdong, China |
| Model Number | ZX300 ZX300-3 |
| Packaging Details | Wooden packing |
| Payment Terms | T/T, Paypal and Trade Assurance |
| Supply Ability | 1000pieces |
| Condition | New | Appliion | Crawler excavator parts |
| Place of Origin | Guangdong, China | Packaging Details | Wooden packing |
| Shipment | by express, by air, by sea | Model Number | ZX300 ZX300-3 |
| Supply Ability | 1000pieces | Name | hydraulic pump assembly |
| Brand Name | Belparts | Payment Terms | T/T, Paypal and Trade Assurance |
| Price | Negotiable price | Delivery Time | 1-7days |
| Minimum Order Quantity | 1 piece | Model | ZX300 ZX300-3 |
| Part number | 9122780 9136850 | Power | Hydraulic |
Hitachi excavator pump ZX300 ZX300-3 hydraulic main pump 9122780 9136850 pump assembly
The hydraulic pump converts mechanical energy into hydraulic energy to power the excavator's hydraulic system. When the engine drives the pump shaft to rotate, the internal pistons or gear sets create oil suction and compression processes, forming a high-pressure oil flow. Belparts hydraulic pumps feature variable displacement design that automatically adjusts output flow according to load requirements, achieving high energy efficiency.
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Belparts excavator hydraulic main pump |
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Place of Origin: |
China(mainland) |
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Model: |
ZX300 ZX330-3 |
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Part number: |
9122780 9136850 |
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Payment term: |
T/T & PayPal |
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Delivery time: |
Within 2 days after receiving the payment |
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Packing: |
Standard exporting packing or as required |
| # | Part No | Part Name | Qty. | Price request |
|---|---|---|---|---|
| 9122780 | PUMP; SINGLE | 2 | ||
| (9136850) | PUMP; SINGLE | 2 | ||
| 02 | 1014184 | . CASING; PUMP | 1 | |
| 03 | 8046112 | . PACKING | 1 | |
| 04 | 2023051 | . DISC; DRIVING | 1 | |
| 06 | 4190694 | . BRG.; ROL. | 1 | |
| 07 | 4209323 | . BRG.; ROL. | 1 | |
| 08 | 3035965 | . SPACER | 1 | |
| 09 | 4191665 | . NUT; BRG. | 1 | |
| 13 | 8049118 | . PISTON | 7 | |
| 13 | 8051275 | . PISTON | 7 | |
| 14 | 2022744 | . ROTOR | 1 | |
| 16 | 8035539 | . SHAFT; CENTER | 1 | |
| 17 | 4184779 | . BALL | 1 | |
| 18 | 4191667 | . RING; RETAINING | 1 | |
| 19 | 4194362 | . SPRING; COMPRES. | 1 | |
| 20 | 4193062 | . RING; RETAINING | 1 | |
| 21 | 4198956 | . PIN | 1 | |
| 23 | 3035966 | . COVER; SEAL | 1 | |
| 24 | 4191664 | . O-RING | 1 | |
| 25 | 4094325 | . RING; RETAINING | 1 | |
| 26 | 4232070 | . SEAL; OIL | 1 | |
| 27 | 9742978 | . VALVE | 1 | |
| 31 | 3039569 | . LINK | 1 | |
| 32 | 9724756 | . LEVER | 2 | |
| 34 | 4179179 | . PIN | 2 | |
| 35 | 4179177 | . PIN | 2 | |
| 36 | 4200227 | . PIN | 1 | |
| 37 | 4179176 | . PIN | 1 | |
| 38 | 4146370 | . RING; RETAINING | 6 | |
| 39 | 1011957 | . HEAD | 1 | |
| 39 | 1011956 | . HEAD | 1 | |
| 41 | 3036326 | . PISTON; SERVO | 1 | |
| 42 | 4193245 | . PIN | 1 | |
| 43 | 4179838 | . SCREW; SET | 1 | |
| 46 | 4099290 | . PIN; SPRING | 2 | |
| 48 | 4180349 | . O-RING | 10 | |
| 49 | M341245 | . BOLT; SOCKET | 8 | |
| 50 | 495841 | . WASHER; SPRING | 8 | |
| 51 | 4108720 | . PLUG | 1 | |
| 51A | 957366 | .. O-RING | 1 | |
| 52 | 4204862 | . STOPPER | 1 | |
| 53 | 955020 | . O-RING | 1 | |
| 59 | 984623 | . O-RING | 1 | |
| 62 | 4216295 | . STOPPER | 1 | |
| 63 | M340820 | . BOLT; SOCKET | 8 | |
| 64 | 4514388 | . WASHER; SPRING | 8 | |
| 66 | 9122781 | . REGULATOR | 1 | |
| 66 | (9136851) | . REGULATOR | 1 | |
| 69 | A810055 | . O-RING | 1 | |
| 70 | 4515041 | . PIN; SPRING | 2 | |
| 75 | 3065868 | . NAME-PLATE | 1 | |
| 76 | M492564 | . SCREW; DRIVE | 2 | |
| 78 | 4211432 | . PLUG | 1 | |
| 79 | 4506424 | . O-RING | 1 | |
| 81 | 9089486 | . PLUG | 1 | |
| 81A | 4509180 | .. O-RING | 1 |
Hydraulic pump efficiency comprises volumetric and mechanical efficiency. Volumetric efficiency compares actual to theoretical flow rate, primarily affected by internal leakage. Mechanical efficiency measures how much input power converts to hydraulic power, mainly influenced by frictional losses. Combined total efficiency can exceed 90% in quality piston pumps.
Though less visible than displacement or pressure, efficiency significantly impacts excavator fuel consumption. Efficient hydraulic pumps reduce energy loss, lowering engine load and saving fuel. This explains why high-end excavators invest more in high-efficiency piston pumps.
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Packaging Details:
1.According to orders, pack the spare parts one by one by oil paper;
2.Put them into small carton boxes one by one;
3.Put the packed small carton boxes into bigger carton boxes one by one;
4.Put the bigger carton boxes into wooden boxes if necessary especially for the shipments by sea.
5. Goods is packed with oil paper and plastic bags inside
6.Using wooden case package.
7.We support the custom-made demand for package
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