Product Overview
The Rexroth 0510120020 is a high-performance external gear pump engineered for demanding industrial hydraulic systems. As a positive displacement pump, it utilizes two precision-machined intermeshing gears to draw fluid from the inlet port and force it into the outlet port, creating reliable flow proportional to the rotational speed. Manufactured by Bosch Rexroth, a global leader in drive and control technology, this pump is designed for continuous duty operation, offering exceptional volumetric efficiency, low noise emission, and a compact footprint. It serves as a primary pressure source in hydraulic circuits, delivering consistent flow for actuation, lubrication, and fluid transfer tasks across a wide range of heavy machinery.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | External Gear Pump |
| Model Designation | 0510120020 |
| Manufacturer | Bosch Rexroth |
| Operating Pressure | Standard Industrial Grade (Up to 250 bar continuous, 280 bar peak) |
| Displacement Range | Nominal 4.0 to 40.0 cm³/rev (dependent on specific gear set configuration) |
| Speed Range | Up to 3,000 RPM (continuous duty) |
| Mounting & Connection | Standard ISO 4-bolt flange / SAE flange options; splined or keyed shaft |
| Body Material | High-strength cast iron / aluminum alloy casing |
| Seal Type | NBR / FKM (Viton) options for various fluid compatibility |
Engineering Features & Advantages
- Precision Gear Performance: The external gear design features case-hardened, ground gear teeth that ensure minimal internal leakage, high volumetric efficiency, and smooth, pulsation-free fluid delivery even at high operating pressures.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, the 0510120020 utilizes durable journal bearings and a robust casing to withstand high radial loads and extend service life in contaminated or high-temperature environments.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement without modification to existing mounting flanges, drive shafts, or hydraulic lines.
- Low Noise Operation: Optimized gear geometry and tight manufacturing tolerances significantly reduce pressure pulsation and acoustic noise, contributing to a quieter and safer working environment.
- Versatile Fluid Compatibility: Suitable for use with a wide range of hydraulic fluids including mineral oils, HFC, HFD, and environmentally friendly synthetic fluids, depending on seal selection.
Typical Industrial Applications
This Rexroth external
PRODUCT IMAGES

REXROTH 0510120020 External Gear Pump
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- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
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