K3V112DTP-9N49 Hydraulic Pump Kawasaki spare parts

K3V112DTP-9N49 Hydraulic Pump Kawasaki spare parts Featured Image
  • K3V112DTP-9N49 Hydraulic Pump Kawasaki spare parts
  • K3V112DTP-9N49 Hydraulic Pump Kawasaki spare parts
  • K3V112DTP-9N49 Hydraulic Pump Kawasaki spare parts
  • K3V112DTP-9N49 Hydraulic Pump Kawasaki spare parts

Short Description:

The Kawasaki K3V112DTP-9N49 is a genuine positive-control dual variable piston hydraulic pump, serving as the core power source for 20-ton-class excavator hydraulic systems. Optimized with exclusive 9N49 valve group parameters, it precisely matches the original engine power curve and torque output characteristics of mainstream domestic and foreign 20-ton excavators. Adopting mature K3 series large-displacement pump technology, it converts mechanical energy into high-efficiency, stable hydraulic power, providing dual-circuit oil supply for boom, arm, bucket, travel and slewing systems. Designed to adapt to complex working conditions such as heavy-duty excavation, frequent load switching and long-time continuous operation, it features sensitive response, coordinated compound actions, stable pressure output and low heat generation, effectively improving overall construction efficiency and equipment durability.

Product Detail

Product Tags

description

The K3V112DTP-9N49 hydraulic pump adopts advanced positive flow control technology, different from negative-flow pumps, achieving active real-time dynamic matching of pump displacement and valve flow. The dedicated 9N49 control valve assembly can accurately identify operating actions and load changes, intelligently distribute hydraulic flow, avoid ineffective power loss, and significantly improve fuel economy and operating smoothness. The whole pump adopts high-strength integral cast steel shell, high-precision plunger pairs, wear-resistant hardened valve plates and upgraded high-temperature and pressure-resistant sealing components. Through strict factory fatigue and impact testing, it can stably adapt to long-term high-load, high-temperature and dusty construction environments. Compared with inferior general pumps, the 9N49 customized version features more accurate power matching, faster response speed, more coordinated composite actions, effectively solving common failures such as weak digging force, slow compound action, high system heat and power waste caused by mismatched parameters.

product parameters

Brand: Kawasaki (Genuine Original)
Model: K3V112DTP-9N49
Product Name: Positive Flow Control Dual Variable Piston Main Hydraulic Pump Assembly
Applicable Equipment: 20-ton-class excavators including Sany, XCMG, Liugong and other mainstream domestic models
Structural Type: Axial Variable Displacement Dual Piston Pump (Positive Flow Control)
Core Structure: Exclusive 9N49 control valve group, positive flow signal sensing module, dual-pump swashplate variable mechanism, high-precision plunger assembly, hardened alloy valve plate, built-in overload pressure limiting valve, multi-layer reinforced high-pressure sealing set, integral cast steel pump housing
Main Material: High-strength cast steel shell, wear-resistant alloy plunger pair, impact-resistant thickened valve plate, high-temperature aging-resistant sealing parts, precision hydraulic control components
Core Function: Dual-circuit hydraulic power output, positive flow intelligent variable adjustment, engine power matching, providing stable power for full hydraulic executive systems to ensure efficient and coordinated compound actions
Working Characteristics: Ultra-fast flow response, precise flow distribution, low power loss, low heat generation, stable pressure holding, small progressive internal leakage and excellent anti-fatigue performance
Working Condition Adaptation: Suitable for heavy excavation, rock breaking, frequent start-stop, impact load, high temperature and dusty open-air construction scenarios
Matching Parts: Main control valve assembly, travel and slewing hydraulic motor, hydraulic oil tank, return oil filter, high-pressure hydraulic hose, engine flywheel connecting end

advantages

• Equipped with original 9N49 dedicated control program, the positive flow control mode realizes active follow-up of pump and valve, with higher operating sensitivity than traditional negative flow pumps.
• Intelligent flow distribution technology matches load demand in real time, effectively reducing idle and light-load power waste and improving overall fuel efficiency by 8%-15%.
• Dual-pump independent variable structure ensures smooth linkage of excavation, lifting, traveling and slewing actions without jitter or lag.
• Built-in multi-stage overload pressure limiting mechanism absorbs instantaneous impact pressure to protect internal precision parts and extend pump service life.
• Hardened and wear-resistant internal friction pairs suppress performance attenuation during long-term heavy-load cyclic operation, maintaining stable output for a long time.
• Upgraded composite sealing system resists high-temperature oil corrosion and aging, effectively avoiding external leakage and internal pressure relief failures.
• Standard original mounting dimensions support direct on-site replacement without modification, lowering maintenance difficulty and shortening equipment downtime.

maintenance & replacement tips

• Regularly inspect the pump body, sealing surfaces and high-pressure pipeline joints to eliminate oil seepage caused by long-term vibration and impact loads.
• Replace hydraulic oil and filter elements strictly according to the maintenance cycle to avoid particle impurities scratching precision plunger and valve plate friction pairs.
• Keep the hydraulic oil clean to prevent oil deterioration from causing stuck valve groups and inaccurate positive flow signal feedback.
• Check the tightness of flywheel connecting bolts regularly to avoid abnormal vibration, noise and shaft wear caused by loose installation.
• Avoid long-term extreme overload operation and frequent impact excavation to prevent premature fatigue damage of internal variable mechanism.
• Replace the genuine K3V112DTP-9N49 hydraulic pump in case of sustained pressure drop, weak digging force, serious internal leakage and unsmooth compound actions.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.

our warehouse

our warehouse

Pack and ship

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