Sumitomo QT52 Internal Gear Pump - High-Performance Servo Pump from China Suppliers & Factory for Injection Molding Machines
Technical Parameters
| Inlet and outlet oil port positions / Rotation | Right | Left |
|
N/M | L |
|
F | E |
Frequently Asked Questions
The core advantages are extremely high energy efficiency, superior control precision, and significantly reduced operating noise.
- Energy Saving up to 50-80%: Traditional fixed pumps run constantly at max pressure/flow, wasting excess energy via relief valves. The servo pump set delivers precise flow/pressure on demand, with minimal waste.
- Improved Product Quality: More stable pressure and faster response enable more precise control over injection and holding phases, reducing defects.
- Reduced Oil Temperature: Less energy waste means significantly lower hydraulic oil temperature, extending the life of oil and seals.
Yes, this is a complete drop-in replacement solution. The installation process is standardized, primarily involving:
- Mechanical Installation: Mounting the pump set to the original location via a bracket and connecting pump ports to existing high-pressure lines.
- Electrical Connection: Connecting the servo drive to the main power supply and signal lines (pressure/flow commands) to the injection molding machine's control system.
Actually, the overall maintenance cost is typically lower. The reasons are:
- Extended Hydraulic Oil Life: Significantly reduced oil temperature slows oxidation, greatly extending the replacement intervals for hydraulic oil and filters.
- Reduced Component Stress: The system no longer requires long-term high-pressure relief, reducing fatigue on pumps, valves, and fittings.
- High Reliability: Sumitomo internal gear pumps are known for their durability, and servo motors have no wear-prone components like brushes. The main maintenance task is keeping the hydraulic oil clean.
Sumitomo internal gear pumps feature a specialized internal gear design with an optimized profile that ensures smooth contact and minimal pressure pulsation. This greatly reduces fluid-borne noise and mechanical vibration, delivering exceptionally quiet performance even under high operating pressures.
Most injection molding plants recover the initial cost of the upgrade within 12 to 18 months. This rapid payback is driven by direct energy savings of 50-80%, reduced cooling water consumption, and lower hydraulic fluid replacement costs.
You can check the rotation direction of your existing motor shaft. Match it with the parameters table provided above (Right rotation corresponds to N, M, or F configurations, while Left rotation corresponds to L or E). If you need assistance, please contact our technical support with your current pump nameplate details.