K3V63DT-9POH Hydraulic Pump K3V63DT Steel Main Pump for SY135 Construction Excavator Parts
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Product Description
K3V63DT-9POH Hydraulic Pump K3V63DT Steel Main Pump for SY135 Construction Excavator Parts
Function
Being the core power element of excavator hydraulic systems, the hydraulic main pump is driven by the engine. It realizes conversion of mechanical energy into high-pressure hydraulic energy and transmits pressurized medium to each hydraulic motor to drive boom, stick, bucket, travel and swing functions.
Type
Axial variable piston pumps are widely adopted on construction excavators. Medium and large tonnage excavators use integrated dual main pumps matched with a rear pilot gear pump.
The dual high-pressure pumps adopt separate oil supply routes, feeding oil to main control valve ports to realize coordinated composite actions, working pressure range: 28~35MPa.
The low-pressure pilot pump fixed at pump tail runs at 3~4MPa with low flow volume, providing pilot control oil for operation handles and main valve spools.
The dual high-pressure pumps adopt separate oil supply routes, feeding oil to main control valve ports to realize coordinated composite actions, working pressure range: 28~35MPa.
The low-pressure pilot pump fixed at pump tail runs at 3~4MPa with low flow volume, providing pilot control oil for operation handles and main valve spools.
Internal Parts
The housing and cylinder block contain multiple piston assemblies rotating synchronously with main shaft to finish oil suction and pressurization work.
Changing swash plate tilt angle adjusts piston stroke length and pump volumetric displacement.
External servo regulator actuates swash plate based on hydraulic feedback signals. Larger angle increases displacement and flow for faster operation; smaller angle lowers fuel consumption and prevents engine stall risk.
The valve plate separates low-pressure inlet and high-pressure outlet channels to complete fluid distribution work.
Changing swash plate tilt angle adjusts piston stroke length and pump volumetric displacement.
External servo regulator actuates swash plate based on hydraulic feedback signals. Larger angle increases displacement and flow for faster operation; smaller angle lowers fuel consumption and prevents engine stall risk.
The valve plate separates low-pressure inlet and high-pressure outlet channels to complete fluid distribution work.
Three Control Modes
Constant power regulation automatically cuts pump displacement as load increases, protecting engine and making full use of output power.
The LS load-sensing system supplies flow according to actual working requirement and maintains low displacement at idle to reduce fuel consumption.
HP pressure limiting function reduces pump displacement at system peak pressure, protecting hydraulic pipes and cylinders from breakage damage.
The LS load-sensing system supplies flow according to actual working requirement and maintains low displacement at idle to reduce fuel consumption.
HP pressure limiting function reduces pump displacement at system peak pressure, protecting hydraulic pipes and cylinders from breakage damage.
Common Failures
Internal leakage induced by piston wear, valve plate damage or regulator clogging results in slow action speed and insufficient power output.
Regulator locked at maximum displacement position causes engine overload, black smoke emission and engine stall under heavy load conditions.
Excessive internal leakage converts pressure loss into heat energy, causing abnormal temperature rise of hydraulic oil.
Air mixing in hydraulic oil, insufficient fluid volume or damaged bearings and pistons generate abnormal running noise.
Regulator locked at maximum displacement position causes engine overload, black smoke emission and engine stall under heavy load conditions.
Excessive internal leakage converts pressure loss into heat energy, causing abnormal temperature rise of hydraulic oil.
Air mixing in hydraulic oil, insufficient fluid volume or damaged bearings and pistons generate abnormal running noise.
Maintenance
Carry out regular replacement of hydraulic oil and filter elements to prevent precision parts from abrasive damage. Ensure good sealing of suction pipelines to avoid air intake and equipment vibration. Keep hydraulic oil at standard level to prevent pump malfunction.
|
Machinery Test Report
|
Provided |
Warranty
|
3 Months |
|
Video outgoing-inspection
|
Provided | Brand Name |
OEM
|
|
Place of Origin
|
China | Product Name |
Hydraulic Pump
|
|
Model
|
K3V63DT-9POH | MOQ |
1 Piece
|
| Quality |
High-Quality
|
Delivery time
|
7-15 Days
|
|
Standard or Nonstandard
|
Standard
|
Application
|
Excavator Machinery
|
|
Size
|
Standard Size
|
Color | Red |
Company Profile
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Lanzhou Fudong Guangqi Trading Co., Ltd
Location
No. 7 West South Binhe Road, Xigu District, Lanzhou City, Gansu Province, China
Contact Person
Liang