Hydraulic Pump
Excavator Spare Part K7V180 K7V180DTP Kawasaki Hydraulic Main Pump
The K7V series are variable displacement axial piston pumps of swash plate design, suitable for use in mobile appliions such as Excavators, Cranes, etc.
With the Kawasaki's latest technologies for improving efficiency and lowering noise, they achieve the world's top-level pump efficiency and low noise which contribute to energy saving on appliions and comfortable working environment.
A long life is obtained by adopting large capacity of bearing and thicker shaft which reduces the load on the edge of bearing rollers.
Product Descriptio
| Model | K7V63 | K7V125 | K7V140 | K7V160 | K7V180 | K7V240 | K7V280 |
| Displacement (cm3) | 65 | 130 | 140 | 160 | 180 | 242 | 280 |
| Pressure (MPa) | Rated | 35 |
| Peak | 40 |
| Max Self Priming Speed (min-1) | 2,650 | 2,360 | 2,200 | 2,100 | 2,000 | 2,100*1 | 1,800
[2,100]*1 |
| Structure |
| Tandem | ◯ | ◯ | ◯ | ◯ | ◯ | - | ◯ |
| Parallel | - | - | - | - | - | ◯ | - |
| Hydraulic pump | Cylinder block | Press pin | Valve plate | Barrel washer |
| Piston motor | Piston shoe | Snap ring | Shoe plate | Oil seal |
| Piston pump | Retainer plate | Coil spring | Bearing plate | Friion plate |
| Gear pump | Ball guide | Disk spring | Swash plate | Steel plate |
We can supply you all kinds of excavator spare parts as following:
1.Hydraulic parts: hydraulic pump, main control valve, hydraulic cylinder, final drive, travel motor, swingmotor,gear box, slewing bearing etc.
2.Engine parts: engine assy, piston, piston ring, cylinder block, cylinder head
crankshaft, turbocharger,fuel injection pump, starting motor and alternator etc.
3.Undercarriage parts: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion,coil adjuster,rubber track and pad etc.
4.Cab parts: operator’s cab assy, wiring harness, monitor, controller, seat, door etc.
Theory
The excavator hydraulic pump is one of the key components in the excavator hydraulic system and is used to provide the pressure and flow required by the hydraulic system. Here's how it works:
1. Structure of a hydraulic pump: A hydraulic pump usually consists of a drive shaft, a drive device (such as an electric motor or engine) and a pump body. There is a rotor and a casing inside the pump body. The rotor is connected to the driving device through a drive shaft.
2. Oil suction stage: When the hydraulic pump starts to work, the driving device starts, and the drive shaft drives the rotor to rotate. During the oil suction stage, when the rotor rotates, some closed cavities will be formed inside the pump body. As these cavities pass by the oil inlet, they expand, creating an area of negative pressure. Negative pressure draws oil from the hydraulic tank into the pump body.
3. Oil pressure stage: When the rotor continues to rotate, the cavity gradually shrinks, pushing the oil to the oil outlet of the pump body. During this process, the oil passes through the pressure control device of the pump body, such as a hydraulic valve, etc., which can control the pressure and flow of the oil. The output pressure of a hydraulic pump depends on the needs of the hydraulic system and the design and adjustment of the pump.
4. Oil circulation: The pump body pushes pressure oil into the hydraulic system, and the oil is transported through pipelines to actuators, such as hydraulic cylinders or hydraulic motors, to realize the movement and operation of the excavator. After completing the work, the oil returns to the hydraulic tank and is recycled again.
The excavator hydraulic pump is one of the key components of the excavator, and maintenance has an important impact on its normal operation and life. The following are some maintenance recommendations for excavator hydraulic pumps:
1Replace hydraulic oil regularly: The normal operation of the hydraulic pump requires clean hydraulic oil. Regular replacement of hydraulic oil can keep the hydraulic system clean and avoid damage to the hydraulic pump by sediment, impurities, etc.
2 Pay attention to the temperature of the hydraulic oil: the hydraulic pump will generate heat during work, and excessive temperature will have an adverse effect on the hydraulic system. Make sure the hydraulic oil temperature is within the normal range and avoid overheating or overcooling.
3. Check the seals of the hydraulic pump: Regularly check the seals of the hydraulic pump, including O-rings, sealing rings, etc., to ensure that they are intact. If there is wear or aging, replace it in time.
4. Check the filter of the hydraulic pump: The filter of the hydraulic pump can filter impurities and particles in the hydraulic oil and keep the hydraulic system clean. Check and clean or replace the filter regularly to ensure it is working properly.
5. Regularly check the oil seal of the hydraulic pump: The oil seal of the hydraulic pump plays a sealing role to prevent hydraulic oil leakage. Regularly check whether the oil seal is intact and replace worn or aging oil seals in time.
6. Pay attention to the working pressure of the hydraulic pump: Ensure that the working pressure of the hydraulic pump is within the normal range to avoid damage to the hydraulic pump due to excessively high or low pressure.
FAQ
1. How to quickly and accurately buy products what lneeded?
A: Provide the original parts number to us to check.
2. How long have you been in the excavator
A: We are engaged in excavator parts since 1998
3. lfI don't know the part number,what shouldI do?
A: Please send us size and pictures of old products.
4. What is the warranty of the products?
A: The warranty is 6/12 Months based on the specific product.
5. How long is your delivery time?
A: The normal delivery time is 3-5 days for stock sproductsafter getting payment. lf not in stock, we will inform you thetime requlred.
6. Which shipping term you can supply?
A: By sea,air or by express ( DHL,Fedex,TNT,UPSEMS)
7. What is your MOQ?
A: Small order and sample order are acceptable
8. Do you have any After-Sales service?
A: Yes!Our
