Caterpillar 365/374/390 Hydraulic Pump
Applicable Models: 365C/CL, 374D/DL/F, 390D/DL/F (60–90 ton large mining excavators)
Main Pump Models: Kawasaki K7V280, K5V200, K5V280
OEM Part Numbers
- 365C: 259-0782, 10R6370, 266-7952
- 374D/390D: 584-0379, 369-9676, 334-9990
- 374F/390F: 369-9655, 576-3072, 20R9516
1. Core Technical Parameters by Model
Cat 365C (65 ton, Equipped with C15 Engine)
- Pump Model: K5V200DT Tandem Variable Displacement Piston Pump
- Rated Speed: 1800 rpm
- Total Flow Rate: 440 L/min
- System Working Pressure: 350 bar (5076 psi)
- Pilot Pressure: 39 bar
- Matched Engine: C15 ACERT, 336 kW (450 hp)
Cat 374D/F (74 ton, Equipped with C15 Engine)
- Pump Model: K5V280 (374D), K7V280DP (374F, Electronic Control)
- Rated Speed: 1800 rpm
- Total Flow Rate: 896 L/min (237 gpm)
- System Pressure:
- Working Circuit: 370 bar (5366 psi)
- Lift Mode: 380 bar (5511 psi)
- Travel & Swing Circuit: 350 bar
- Matched Engine: C15, 362 kW (485 hp)
Cat 390D/F (90 ton, Equipped with C18 Engine)
- Pump Model: K7V280DP (Kawasaki, Electro-hydraulic Control)
- Rated Speed: 1800 rpm
- Total Flow Rate: 896 L/min
- System Pressure: 370 bar / 380 bar (same as 374F)
- Matched Engine: C18 ACERT, 470 kW (630 hp)
2. Structural & Control Features
- Structure: Tandem variable displacement piston pump (main pump + auxiliary pump). Equipped with independent hydrostatic swing circuit, dedicated swing pump and accumulator for energy saving and noise reduction.
- Control System:
- 365C / 374D: Hydraulic Load Sensing (LS) control
- 374F / 390F: Electro-hydraulic hybrid LS + Electronic Power Restriction (EPR). Linked with ECM, delivering 10–15% fuel savings.
- Construction: High-strength ductile iron housing, hardened pistons and bronze valve plates. Upgraded heavy-duty bearings for K7V series, extending service life by 30%.
- Connection: Standard SAE flange and 18-tooth spline shaft for direct replacement.
3. Model Comparison
- 365C: 65 ton | K5V200 | Flow 440 L/min | Pressure 350 bar | C15 Engine
- 374D: 74 ton | K5V280 | Flow 896 L/min | Pressure 350 bar | C15 Engine
- 374F: 74 ton | K7V280DP (Electronic Control) | Pressure 370/380 bar | C15 Engine
- 390D/F: 90 ton | K7V280DP | Flow 896 L/min | Pressure 370/380 bar | C18 Engine
4. Application & Replacement Options
- Genuine pumps: Manufactured by Kawasaki, Japan.
- Domestic equivalent pumps:
- For 365C: Replica K5V200, 45,000 – 60,000 CNY
- For 374D/390D: Replica K5V280, 60,000 – 80,000 CNY
- For 374F/390F: Electronic-controlled replica K7V280DP, 80,000 – 120,000 CNY
- Typical applications: Heavy-duty mining, large-scale earthworks and rock breaking operations.
Caterpillar 365 Hydraulic Pump
• Model & Configuration: The Caterpillar 365 hydraulic excavator is typically equipped with high-performance hydraulic pumps, such as models 396-9676 or 3969676, which are piston pumps incorporating advanced technologies from brands like Kawasaki (Japan). These pumps ensure efficient, reliable, and durable performance.
• Performance Characteristics:
• Flow Rate & Pressure: The main pump can achieve a maximum flow rate of several hundred liters per minute, with system pressure typically around 35 MPa, meeting the powerful demands for digging, swinging, and traveling.
• Control Technology: Advanced hydraulic control systems, such as Negative Flow Control (NFC) and power control, are employed to precisely match flow with load, enhancing operational efficiency.
• Durability: The pump body and critical components are reinforced to withstand high-intensity operations, reducing wear and failure rates.
• Application Scenarios: Suitable for heavy-duty tasks in mining, large-scale infrastructure construction, and other demanding environments, efficiently handling digging, loading, and crushing operations.
Caterpillar 374 Hydraulic Pump
• Model & Configuration: The Caterpillar 374 hydraulic excavator is equipped with optimized hydraulic pumps to meet the demands of its 74.5-ton operating weight and powerful operational capabilities. The specific model may vary based on configuration, but typically features high-performance piston pumps.
• Performance Characteristics:
• Efficiency & Energy Savings: Smart power mode matching reduces fuel consumption based on operating conditions.
• Precise Control: Electronic control technology enables fine-tuning of hydraulic flow for enhanced operational accuracy.
• High Reliability: The pump body structure is optimized, and critical components are enhanced for wear resistance, extending service life.
• Hydrostatic Swing Circuit: A dedicated hydrostatic swing circuit enables the regeneration of swing braking energy and independent management of cylinder oil flow, improving operational efficiency and stability.
• Application Scenarios: Widely used in heavy-duty mining, large-scale earthmoving, and other demanding scenarios, supporting efficient digging and loading operations.
Caterpillar 390 Hydraulic Pump
• Model & Configuration: The Caterpillar 390 hydraulic excavator is equipped with hydraulic pumps featuring higher flow and pressure specifications to meet the demands of its 86.2-ton operating weight and powerful operational capabilities. Specific models may include high-performance piston pumps.
• Performance Characteristics:
• High Flow Rate & Pressure: The main pump can achieve a maximum flow rate of 980 L/min, with a main relief pressure setting of 35 MPa, ensuring powerful output.
• Exceptional Control Performance: Equipped with advanced hydraulic control systems, it enables precise motion control and efficient operational efficiency.
• Outstanding Lifting Capacity: The bucket digging force reaches 363 kN, the stick digging force 276 kN, and the swing torque 260 kN·m, meeting heavy-duty operational requirements.
• Simplified Maintenance Process: The modular design facilitates easy maintenance and servicing of the hydraulic pump, reducing operational costs.
• Application Scenarios: Primarily used in heavy-duty mining, large-scale infrastructure construction, and other demanding environments, efficiently completing large-scale digging and loading tasks.
