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
