Cat

CAT 121-4311 Hydraulic Piston Pumps

HENGYUHANG Plunger Pump 121-4311 – Perfect Replacement for CAT Hydraulic Plunger Pump


The CAT hydraulic plunger pump plays a vital role in high-pressure hydraulic systems used in construction machinery, mining equipment, and heavy industrial applications. Known for durability and stable performance, the CAT hydraulic plunger pump has become a standard component in many CAT machines.

    

To provide a reliable and cost-effective alternative, HENGYUHANG plunger pump 121-4311 is designed as a perfect replacement for CAT hydraulic plunger pump, offering OEM-level compatibility, stable performance, and long service life.


Functions of HENGYUHANG Plunger Pump 121-4311


As a direct replacement for CAT hydraulic plunger pump, the HENGYUHANG plunger pump 121-4311 provides:

  • High-pressure hydraulic oil output

  • Smooth and stable flow performance

  • Efficient energy transmission

  • Low internal leakage

  • Reliable operation under continuous heavy-duty conditions

Description

1.Technical Parameters of HENGYUHANG Plunger Pump 121-4311

ParameterSpecification
Product TypeAxial Hydraulic Plunger Pump
Replacement ForCAT Hydraulic Plunger Pump
CAT Part Number121-4311
Rated PressureUp to 35 MPa
Maximum PressureUp to 40 MPa
Flow PerformanceHigh efficiency, stable flow
Operating SpeedOEM standard
Working MediumHydraulic Oil
Operating Temperature-20°C to +90°C
Mounting InterfaceFully compatible with CAT systems
Installation MethodDirect replacement, plug-and-play
Quality Inspection100% pressure and performance tested



2.Application Industries

Both the CAT hydraulic plunger pump and HENGYUHANG plunger pump are widely used in:

  • Construction machinery

  • Mining equipment

  • Earthmoving machinery

  • Industrial hydraulic systems

  • Agricultural machinery

  • Heavy-duty mobile equipment

The HENGYUHANG plunger pump is engineered to operate reliably in harsh working conditions.


3.Advantages of CAT Hydraulic Plunger Pump

The CAT hydraulic plunger pump is recognized globally for:

  • High durability and long service life

  • Stable pressure and consistent flow output

  • Proven reliability in extreme working environments

  • Strong OEM quality standards

These advantages have made CAT hydraulic plunger pumps a trusted choice for many operators.


4.Limitations of CAT Hydraulic Plunger Pump

Despite its strengths, the CAT hydraulic plunger pump also has limitations:

  • High purchase and replacement cost

  • Expensive OEM spare parts

  • Long lead time for original components

  • Higher maintenance expenses

These issues encourage customers to consider a dependable replacement for CAT hydraulic plunger pump.


5.Advantages of HENGYUHANG Plunger Pump 121-4311

The HENGYUHANG plunger pump 121-4311 offers clear advantages:

OEM-Level Compatibility

Designed according to CAT specifications for seamless installation.

Cost-Effective Alternative

Provides the same performance as a CAT hydraulic plunger pump at a more competitive price.

Stable and Reliable Performance

Precision machining ensures consistent output and extended service life.

Short Delivery Time

Fast production and supply help reduce equipment downtime.

Strict Quality Control

Every HENGYUHANG plunger pump undergoes comprehensive testing before shipment.


6.Why Choose HENGYUHANG Plunger Pump?

Choosing the HENGYUHANG plunger pump 121-4311 means choosing a high-quality, economical replacement for CAT hydraulic plunger pump. It helps reduce operating costs while maintaining hydraulic system performance and reliability.


7.Conclusion

The HENGYUHANG plunger pump 121-4311 is a dependable and cost-effective replacement for CAT hydraulic plunger pump. With OEM compatibility, stable performance, and competitive pricing, it is an ideal solution for construction, mining, and industrial hydraulic applications.

For customers seeking a reliable alternative to the CAT hydraulic plunger pump, HENGYUHANG plunger pump 121-4311 is the right choice.

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