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CBHZQA-F25-AL Hydraulic Gear Pumps
| Theoretical Displacement | ~25 cm³/rev | Fixed displacement—defines the maximum oil volume the pump can deliver per shaft rotation. |
| Maximum Continuous Pressure | 16 MPa (2320 psi) | Safe long-term operating pressure; exceeding this causes accelerated wear of gear teeth and seals. |
| Peak Pressure | 20 MPa (2900 psi) | Short-duration pressure (≤3 seconds) for temporary load spikes (e.g., sudden startup of a hydraulic cylinder); avoid prolonged operation at peak pressure. |
| Rated Flow (at 1500 rpm) | ~37.5 L/min (liters per minute) | Calculated as: Displacement × Speed ÷ 1000 (25 cm³/rev × 1500 rpm ÷ 1000 = 37.5 L/min); actual flow is slightly lower due to volumetric efficiency. |
| Rated Speed | 1000 – 2000 rpm | Optimal speed range for high volumetric efficiency (≥88%) and low operating noise (≤72 dB(A) at 1m distance). |
| Minimum Speed | ≥500 rpm | Prevents cavitation (air bubble formation in oil) and ensures consistent oil suction; running below 500 rpm leads to flow instability. |
| Hydraulic Fluid Compatibility | ISO VG 32/46/68 mineral-based hydraulic oil | Must meet cleanliness standard NAS 9 or higher (use 10–20 μm filtration to avoid gear wear from contamination). |
| Operating Temperature Range | -10°C to +75°C (14°F to +167°F) | Extreme temperatures degrade oil viscosity and NBR seals; use oil heaters (for < -10°C) or coolers (for > 75°C) if needed. |
