HENGYUHANG Plunger Pump 9T-6857 / 0R-4218 – A Perfect Replacement for CAT Hydraulic Plunger Pump
The CAT hydraulic plunger pump is a core component in high-pressure hydraulic systems used across construction machinery, mining equipment, and heavy-duty industrial applications. Known for stable flow and reliable pressure output, the CAT hydraulic plunger pump supports continuous operation in harsh working environments. However, high purchase costs and long lead times often increase maintenance expenses.
The HENGYUHANG plunger pump 9T-6857 / 0R-4218 is engineered as a perfect replacement for CAT hydraulic plunger pump, providing OEM-level compatibility, stable hydraulic performance, and outstanding cost efficiency. This HENGYUHANG plunger pump can directly replace the CAT hydraulic plunger pump 9T-6857 and 0R-4218 without any system modification.
Functions of HENGYUHANG Plunger Pump 9T-6857 / 0R-4218
As a direct replacement for the CAT hydraulic plunger pump, the HENGYUHANG plunger pump 9T-6857 / 0R-4218 performs key hydraulic functions:
Supplies continuous high-pressure hydraulic oil
Maintains stable and efficient flow output
Supports accurate control of hydraulic cylinders and motors
Operates reliably under heavy load conditions
Reduces hydraulic energy loss and system vibration
| Parameter | Specification |
|---|---|
| Product Type | Axial Hydraulic Plunger Pump |
| Replacement For | CAT Hydraulic Plunger Pump |
| CAT Part Numbers | 9T-6857 / 0R-4218 |
| Rated Pressure | Up to 35 MPa |
| Maximum Pressure | Up to 40 MPa |
| Flow Output | High and stable |
| Operating Speed | OEM standard RPM |
| Working Medium | Hydraulic Oil |
| Operating Temperature | -20°C to +90°C |
| Installation Method | Direct replacement |
| Mounting Interface | Fully compatible with CAT |
| Quality Testing | 100% pressure tested |
These parameters ensure the HENGYUHANG plunger pump 9T-6857 / 0R-4218 can fully replace the CAT hydraulic plunger pump in real-world applications.
The HENGYUHANG plunger pump and CAT hydraulic plunger pump are widely used in:
Construction and earthmoving machinery
Mining and quarry equipment
Industrial hydraulic systems
Material handling and lifting equipment
Agricultural and forestry machinery
Heavy-duty mobile equipment
The HENGYUHANG plunger pump is designed for long-term operation in high-pressure and harsh environments.
The CAT hydraulic plunger pump offers several recognized advantages:
Stable performance under high pressure
Proven durability in demanding environments
Precise hydraulic flow and pressure control
Strong global brand reputation
These advantages have made CAT hydraulic plunger pumps widely used in original equipment installations.
Despite its strengths, the CAT hydraulic plunger pump has certain limitations:
High purchase and replacement costs
Expensive spare parts and service fees
Long delivery times in many regions
Increased downtime during repairs
These factors encourage many users to seek a reliable replacement for CAT hydraulic plunger pump.
The HENGYUHANG plunger pump 9T-6857 / 0R-4218 is designed to match or exceed the performance of the CAT hydraulic plunger pump while offering additional benefits.
Manufactured according to CAT standards, the HENGYUHANG plunger pump ensures direct replacement for the CAT hydraulic plunger pump 9T-6857 and 0R-4218.
Compared with the CAT hydraulic plunger pump, the HENGYUHANG plunger pump provides excellent performance at a more competitive price.
Precision machining and strict quality control guarantee consistent pressure and flow output.
HENGYUHANG plunger pumps are available with faster delivery, helping reduce equipment downtime.
Each HENGYUHANG plunger pump is fully tested before shipment to ensure reliable operation.
Choosing the HENGYUHANG plunger pump 9T-6857 / 0R-4218 means choosing a dependable, durable, and economical replacement for CAT hydraulic plunger pump. It helps reduce operating costs while maintaining stable hydraulic system performance.
The HENGYUHANG plunger pump 9T-6857 / 0R-4218 is a high-quality alternative to the CAT hydraulic plunger pump. With OEM-level compatibility, reliable hydraulic performance, and clear cost advantages, it is widely used in construction, mining, and industrial hydraulic systems.
If you are looking for a trusted replacement for CAT hydraulic plunger pump, the HENGYUHANG plunger pump is your ideal solution.

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