8905f57c417ac8e87b3f8eb0d60a8730

8905f57c417ac8e87b3f8eb0d60a8730

3 week ago

0 0

Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 3 year year

Product details

I. Product Positioning and Technical Features

1. Application Fields

The CATERPILLAR 420 0748 high-pressure plunger pump is a core component of hydraulic systems in construction machinery, primarily used in CAT 420 series excavators and other heavy-duty equipment. Designed for high-pressure, large-flow, and durable performance, it is ideal for applications such as earthmoving, mining, and building demolition.

2. Technical Specifications

• Pressure Range: Typically supports system pressures up to 35-40 MPa (refer to CAT official manuals for exact values), meeting the hydraulic demands of CAT 420 series equipment.

• Flow Characteristics: Utilizes a multi-plunger parallel design for continuous flow output with minimal pulsation, ensuring hydraulic system stability.

• Structural Materials: Features high-strength alloy steel plungers and wear-resistant ceramic-coated cylinders, suitable for high-load and corrosive environments.

• Control Method: Integrates a pressure-compensated variable displacement mechanism for automatic flow adjustment based on load, enhancing energy efficiency.

II. Core Advantages and Performance

1. High-Pressure Output Capability

The plunger pump achieves required system pressures through reciprocating plunger motion, supporting high-load operations like hydraulic breakers and deep excavation in CAT 420 excavators.

2. Durability and Reliability

• Material and Process: Quenched plungers with hardness exceeding HRC 60 and dual-metal composite cylinders improve wear resistance by 30%.

• Sealing System: High-pressure composite seals (PTFE + rubber) reduce leakage to below 0.1%, extending maintenance intervals.

• Lifespan Testing: After 5,000 hours of simulated continuous operation in CAT labs, critical component wear remains below design thresholds.

3. Energy Efficiency Optimization

Variable displacement technology reduces flow at light loads, cutting fuel consumption by 8%-12% compared to fixed-displacement pumps.

III. Application Scenarios and Compatibility

1. CAT 420 Series Excavators

As an OEM-supplied pump, the 420 0748 is fully compatible with CAT 420D/E/F hydraulic systems, requiring no additional tuning for optimal performance.

2. Retrofitting Non-CAT Equipment

Some users adapt it for other excavator brands (e.g., Komatsu PC400, Hitachi ZX450), but note:

• Input speed must match (1,800-2,200 rpm);

• Interface dimensions may require customization;

• System pressure must align with pump design limits.

3. Industrial Expansion

The pump is occasionally used in high-pressure cleaning, hydraulic presses, and injection molding machines due to its pressure stability, though professional modifications are needed.

IV. Selection and Maintenance Guidelines

1. Key Selection Parameters

• System Pressure: Ensure maximum equipment pressure ≤ pump rated pressure.

• Flow Demand: Select displacement based on workload (e.g., 100-150 cc/rev for 420 0748).

• Media Compatibility: Maintain hydraulic oil cleanliness at NAS 6 or higher to prevent particle wear.

2. Common Faults and Solutions【表格】

Symptom Possible Causes Solutions

Pressure fluctuations Plunger wear, seal leakage Replace plunger set and seals

Insufficient flow Stuck variable mechanism, clogged suction filter Clean mechanism, replace filter

Abnormal noise Bearing failure, pump resonance Replace bearings, adjust mounts

3. Maintenance Schedule

• Daily Checks: Oil level, temperature, noise.

• 500 Hours: Replace hydraulic oil and filters.

• 2,000 Hours: Inspect plunger clearance; replace if necessary.

• 5,000 Hours: Overhaul and replace wear parts.

You May Also Like

Contact Now

If you are interested in the product, contact 2bvideo.com for more information for more information

To:: Ningbo Hengnuo Hydraulic Drive Co.,Ltd

Message:

Submit

Disclaimer：

The information of 2bvideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of 2bvideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation. If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.

Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

3 year

Address: Ningbo, China

Main Product: hydraulic motor, gear box, hydraulic pump , hydraulic valve , hydraulic winch, hydraulic system

 Contact now