The 5933841 hydraulic piston pump delivers exact Caterpillar OEM specifications for 395-series excavators. This axial-piston variable displacement pump maintains 350±5 bar operating pressure for boom/arm/swing functions, directly replacing components 593-3841, 3101, and MH3295.
Certified Performance Metrics
| Parameter | Specification | Test Standard |
|---|---|---|
| Displacement | 2×130 cc/rev | ISO 4391 |
| Max Pressure | 350 bar continuous | SAE J745 |
| Flow Rate | 2×240 L/min @ 2,200 RPM | ISO 4409 |
| Volumetric Eff. (ηv) | 96.5% @ 100 bar | ISO 4406:2021 |
| Temp Range | -40°C to 120°C | ASTM D97 |
Model Compatibility Matrix
| Series | Sub-Models | Configuration Notes |
|---|---|---|
| 395D | 395D L, 395D LN | Tier 4 Interim (S/N: JDL00001+) |
| 395E | 395E, 395E L | Tier 4 Final (S/N: MXL01000+) |
| 395F | 395F, 395F L | EU Stage V (S/N: RBK10000+) |
| Special | MH3295 (Mining), 3101 (High-Altitude) | Reinforced housing (RC 0.8) |
Durability Engineering Features
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Swashplate Control
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Electro-proportional displacement control (PWM signal compatible)
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Hysteresis <0.8% (ISO 4400-2018)
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Abrasion Resistance
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Boron-hardened pistons (2,300 HV)
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WC-Co coated cylinder block
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Sealing System
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Triple-lip Turcon® seals (16,000 PSI rating)
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Case drain contamination sensor port
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