Engineered to Komatsu OEM specifications (±0.02mm tolerance), the 7081S01131 hydraulic main pump delivers 175±3 bar operating pressure for PC30-series compact excavators. Direct replacement for 708-1S-01131 with enhanced efficiency for tight-space construction applications.
Urban Job Site Performance
| Parameter | Specification | Test Standard |
|---|---|---|
| Flow Rate | 45 L/min @ 2,000 RPM | ISO 4409:2007 |
| Pressure Stability | ±2% @ 175 bar | SAE J745 |
| Noise Level | 65 dB(A) @ 1m | ISO 4871 |
| Response Time | <0.4s (0-100% flow) | DIN 24300 |
| Weight | 18.5 kg | Komatsu STD 1102-01 |
Model-Specific Compatibility
| Generation | Model Variants | Application Specialization |
|---|---|---|
| PC30MR-2 | PC30MR-2, PC30MRX-2 | Urban redevelopment |
| PC30-3 | PC30-3, PC30R-3 | Landscape construction |
| PC30-5 | PC30-5, PC30LC-5 | Utility installation |
| PC30-7 | PC30-7, PC30R-7 | Residential construction |
Efficiency Engineering Features
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Compact Design
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18% smaller footprint than aftermarket alternatives
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Integrated mounting points for direct replacement
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Energy Efficiency
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92% volumetric efficiency @ 100 bar
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15% lower heat generation vs. standard pumps
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Durability Enhancements
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Carburized steel gears (HRC 58-60)
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Triple-lip seals (10,000 PSI rating)
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Maintenance Optimization
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Standard SAE flange connections
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Quick-disconnect port fittings
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