HPR100 Hydraulic Main Pump Spare Parts Kit Final Drive Bearing Shaft Travel Motor PC200 Excavator Construction Machinery
Price:
Negotiable
MOQ:
1 Pc
Delivery Time:
7-15days
Product Description
HPR100 Hydraulic Main Pump Spare Parts Kit Final Drive Bearing Shaft Travel Motor PC200 Excavator Construction Machinery
The main hydraulic pump acts as the primary power source for excavator hydraulic circuit operation. Powered by the engine, it converts mechanical energy into high-pressure hydraulic energy and supplies pressurized fluid to hydraulic motors, driving all operational motions of the excavator. Axial variable displacement piston pumps are the mainstream choice for engineering excavator configuration. Medium and large construction machines adopt an integrated twin main pump system combined with a rear-mounted pilot gear pump module. Two autonomous high-pressure oil supply pipelines feed the main control valve to realize composite working actions, with a nominal operating pressure of 28–35MPa. The tail-end low-pressure pilot pump operates at 3 to 4MPa with low flow output, offering pilot pressure oil for control lever and main valve spool actuation. Piston assemblies installed inside the cylinder block and pump housing rotate synchronously with the main shaft, completing oil suction and pressure build-up procedures. Adjustments to the swash plate’s tilt angle change piston stroke length, thereby modifying the pump’s displacement capacity. The external servo regulator drives swash plate movement according to hydraulic feedback signals. A larger tilt angle increases fluid flow and operation speed, while a smaller angle cuts fuel consumption and prevents engine stalling. The valve plate separates low-pressure inlet and high-pressure outlet channels to achieve hydraulic oil distribution. Three intelligent control modes support efficient pump operation. Constant power control automatically reduces pump displacement as load increases, protecting the engine and optimizing overall power utilization. The LS load-sensing system provides on-demand fluid flow and maintains low displacement at idle status to achieve fuel-saving effects. The HP pressure limiting function minimizes pump displacement at peak pressure to prevent hydraulic pipelines and cylinders from cracking. Typical failures include internal leakage caused by piston abrasion, valve plate damage or regulator blockage, resulting in slow machine operation and power deficit. If the regulator is fixed at maximum displacement, the engine will suffer overload, emit black smoke and stall under heavy working loads. Severe internal leakage converts pressure loss into heat energy, causing abnormal hydraulic oil overheating. Air entering the hydraulic system, inadequate oil volume, and damaged bearings or pistons will induce abnormal running noise. Routine maintenance involves timely replacement of hydraulic oil and filters to avoid wear on precision internal parts. Guarantee tight sealing of suction pipelines to prevent air suction and machine vibration, and keep hydraulic oil at the specified level to ensure stable pump working efficiency.
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Machinery Test Report
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Provided |
Warranty
|
3 Months |
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Video outgoing-inspection
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Provided | Brand Name |
OEM
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Place of Origin
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China | Product Name |
Hydraulic Pump
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Model
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A8VO200 | MOQ |
1 Piece
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| Quality |
High-Quality
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Delivery time
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7-15 Days
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Standard or Nonstandard
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Standard
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Application
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Excavator Machinery
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Size
|
Standard Size
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Packing | Wooden Box |
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Company
Lanzhou Fudong Guangqi Trading Co., Ltd
Location
No. 7 West South Binhe Road, Xigu District, Lanzhou City, Gansu Province, China
Contact Person
Liang