Product Video
Products Description
|
Brand |
Product Name |
Model |
Part Number |
|
CAT
|
pump |
395 |
627-1315 |
We supply all models of caterpillar hydraulic pumps . If you need to know other models, please contact us.
|
Product Name |
pump |
|
Part Number |
627-1315 |
|
Origin |
US
|
|
Brand Name |
STONE |
|
Model |
PC2000-8 |
|
Price |
Negotiable |
|
Packing Details |
Standard Export Packing |
|
Delivery Time |
0-30 Days |
|
Payment Term |
L/C, T/T |
|
Price Term |
FOB, CIF, CFR |
|
Supply Capacity |
50,000 PCS/Month |
|
Minimum Order Quantity |
1 PC |
|
Material |
High Quality Steel |
|
Technology |
Precision Machining |
|
Surface |
Treatment Anti-Corrosion Coating |
|
Quality |
Original Factory Standard |
|
After-Sales Service |
Full Support, Online Service |
|
Color |
Customizable |
|
Application |
Excavator
|
|
Customizable |
including customized materials, surface treatment and specifications |
Product related information
CAT395 excavator
Specifications:
Engine Power:405 kW (543 hp, ISO 14396)
Engine Model: Cat C18
Operating weight (kg):94,200
Maximum Digging Depth :9,670 mm (9.67 m)
Swing Torque: 362 kN·m
Maximum Digging Force :497 kN (Bucket)
Fuel Tank Capacity :1,220 L
STONE : Product Advantages
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Details:
Design Advantages
Intelligent Power Distribution
Different from traditional mechanical hydraulics, this hydraulic pump can receive real-time commands via the ECM (Engine Control Module). When the system detects multi-valve linkage operations, it enables seamless power distribution and eliminates flow waste.
Low-Speed High-Torque Optimization
Exclusively engineered for the high-torque characteristics of the CAT C18 engine, it delivers maximum pump displacement even at low rotational speeds, effectively balancing the trade-off between power output and fuel efficiency.


Tandem Design
Adopting a compact tandem layout, it reduces the installation space while shortening the length of the power transmission shaft, effectively minimizing axial vibration under high loads.
Flow Channel Hydrodynamic Optimization
The internal flow channels of the pump body have been simulated via CFD (Computational Fluid Dynamics). This minimizes turbulence and cavitation when hydraulic oil enters the plunger cavity, ensuring stable operation under extreme pressure.
Core Power & Performance
Blazing-Fast Response
The hydraulic pump switches extremely rapidly from standstill to full-flow output.
01
Low-Pulsation Design
Reduces hydraulic shock and improves operational smoothness.
02
Optimized Self-Priming Capacity
Maintains stable performance even in oxygen-deficient high-altitude environments.
03
On-Demand Flow Distribution
Multi-pump coordination for precise flow distribution to travel, swing and boom systems.
04
Working performance

Extreme Mining Operations
At the worksites of high-intensity stripping operations in open-pit mines, the instantaneous explosive power of the Cat 395 pump is truly impressive. When tackling hard granite and limestone, the main pump relies on its intelligent power management system to precisely convert engine power into formidable digging force.
Large-Scale Hydraulic Engineering Projects
Projects such as reservoir bottom cleaning and river channel widening are not only characterized by slippery working conditions but also by highly intricate operational scenarios.
When operators perform precision slope trimming or lift precast components, the hydraulic pump can deliver smooth and stable flow according to subtle operational commands, achieving ultra-high control accuracy.


Infrastructure Hubs
For large-scale earthmoving projects such as approach bridge foundation pits of cross-sea bridges and tunnel portals, operational efficiency is the bottom line. Equipped with multi-pump flow distribution technology, the Cat 395 hydraulic pump enables seamless compound and synchronized operation of travel, swing and digging movements. It can shorten the single-cycle time by approximately 10% just for loading operations alone.
Intelligentization & Electronic Control
Intelligent Pump Regulation
Automatically matches hydraulic pump output to load conditions, cutting fuel consumption by 15%.
Electronic Overload Protection
Triggers second-level deceleration protection instantly when the system detects abnormal pressure.
Automatic Fault Pre-alarm
Identifies abnormal vibration frequencies via sensors before pump damage occurs.
One-Click Mode Switching
Enables instantaneous switching between heavy-duty, standard and economy modes.
Integrated Sensor Technology
The hydraulic pump body integrates temperature and pressure sensors for real-time data feedback.
Automatic Idle Technology
Automatically zeros out pump displacement during inoperation to reduce wear and tear.
STONE

Stone is a leading supplier of engineering machinery parts, focusing on providing high-quality parts for mining companies. Since its establishment in 2004, we have been based in Shanghai, China, and have built our own brand STONE, becoming a trusted choice in the industry. We are committed to providing a variety of parts including bulldozers, excavators and wheel loaders for well-known brands such as Caterpillar and Komatsu. Our product line covers a full range of OEM parts, such as Track Chain, Track Rollers, Sprocket, Excavator Buckets, Blades, Excavator Cylinders, Swing Circles, and various electrical and hydraulic components to ensure that our customers' stringent requirements for quality and performance are met.
quality
years experience
service
hours warrant
Q&A
What is the model of the hydraulic pump equipped on the CAT 395 excavator?
The CAT 395 comes standard with a Caterpillar-customized axial piston variable displacement hydraulic pump, which typically features a dual-pump configuration.
What are the common causes of insufficient pressure in the CAT 395 hydraulic pump, and how to troubleshoot it?
Insufficient hydraulic pump pressure will directly lead to weak excavator operation. The common causes and troubleshooting steps are as follows:
Hydraulic Oil Issues: Low hydraulic oil level, deteriorated oil quality (contaminated with impurities or water), or mismatched oil grade can cause poor oil suction and increased internal leakage of the pump. For troubleshooting, first check the hydraulic oil tank level, then sample the oil to observe its cleanliness and viscosity, and send it for testing if necessary.
Suction Line Malfunctions: Clogged suction filter, damaged pipelines with air intake, or loose connectors can result in pump cavitation and failure to build pressure. Clean the suction filter, inspect pipeline tightness, and eliminate air intake points.
Internal Pump Wear: Wear of core components such as pistons, cylinder blocks, and valve plates will cause severe internal leakage. This can be judged by measuring system pressure and monitoring pump temperature rise. If pressure fluctuates significantly and temperature rises rapidly, disassemble the pump for inspection or replace worn parts.
Control Valve Group Failures: Sticking main relief valve or fatigued pressure-regulating spring will cause system pressure relief failure. Disassemble and clean the main relief valve, test spring elasticity, and replace it if necessary.
What are the key daily maintenance points for the CAT 395 hydraulic pump?
Daily maintenance should focus on the following 4 key points, which directly affect the service life of the hydraulic pump:
Hydraulic Oil and Filter Replacement: Strictly follow the Caterpillar maintenance manual to replace hydraulic oil (usually every 2000–2500 operating hours) and inlet, return, and pilot filters. During replacement, completely drain the old oil and clean the tank interior to avoid cross-contamination between new and old oil.
Oil Cleanliness Control: Mining operations involve high levels of dust, so regularly check hydraulic oil cleanliness to ensure it meets the ISO 4406 18/15 standard. When refueling, use a refueling device with a filtration accuracy of not less than 10μm.
Temperature Monitoring: The normal operating temperature of the hydraulic system should be controlled within 50–80℃. Prolonged operation above 85℃ will accelerate hydraulic oil aging and damage pump seals. Regularly clean dust from the hydraulic oil cooler and check the operation status of the cooling fan.
Seal Inspection: Periodically check for leaks at the hydraulic pump's oil inlet/outlet ports and shaft end seals. If oil leakage is detected, replace the seals promptly to prevent air from entering the system or hydraulic oil loss.
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