Product Overview
The G55C063FSBT150ED, along with the G55C, G47C, G38C, G33C, G28V, and G55V series, are three-screw hydraulic pumps from the Italian manufacturer SETTIMA GR series. Founded in 1978 in Piacenza, Italy, SETTIMA is a globally recognized manufacturer of three-screw pumps and hydraulic solutions.
The G55C series belongs to SETTIMA’s GR55 group with displacements covering 50, 63, 75, and 90 cc/rev. The three-screw pump utilizes specially profiled screw geometries on the drive and driven screws, forming continuously moving sealed chambers that draw fluid in and deliver it axially without pulsation. This design delivers extremely low pressure pulsation, ultra-low noise, and high efficiency.
The G55C063FSBT150ED has a displacement of 63 cc/rev and a maximum operating pressure of 250 bar. This pump is specifically designed for injection molding machine servo-hydraulic systems, enabling on-demand oil delivery when paired with a servo motor, achieving precise pressure and flow control while significantly reducing energy consumption. The G55C series shares identical mounting interfaces with other displacement variants in the series, facilitating system upgrades and displacement adjustments.
Interchangeability: The G55C series is manufactured to exacting SETTIMA original design standards. Mounting flange, shaft type, and port dimensions are fully compliant with genuine SETTIMA specifications, enabling 100% drop-in replacement without any system modification.
Technical Specifications
G55C063FSBT150ED
Brand: SETTIMA (Italy)
Series: GR55 (Continuum series)
Product type: Three-screw hydraulic pump / Servo oil pump
Displacement: 63 cc/rev
Maximum operating pressure: 250 bar
Shaft type: Splined shaft
Mounting flange: SAE standard flange
Rotation: Right-hand (standard)
Connection: SAE flange ports
Housing material: Aluminum (cast iron flanges)
Screw material: Special hardened alloy steel
Media compatibility: Mineral-based hydraulic oils and fire-resistant fluids
Operating temperature range: -20°C to +100°C
Speed range: 150 – 6,500 rpm
Net weight: Approx. 27 – 30 kg
Country of origin: Italy
GR Series Displacement Overview
GR28 / G28V: 4 – 13 cc/rev
GR33 / G33C: 10 – 18 cc/rev
GR38 / G38C: 16 – 28 cc/rev
GR47 / G47C / G47V: 28 – 50 cc/rev
GR55 / G55C / G55V: 50 – 90 cc/rev
GR72: 94 – 200 cc/rev
Key Technical Advantages
1. Pulsation-Free Three-Screw Technology
The specially profiled screw geometries on the drive and driven screws form continuously moving sealed chambers. Fluid is drawn in and delivered smoothly along the axial direction with extremely low pressure pulsation, ensuring stable system pressure and uniform flow output — a critical feature for injection molding machines and other high-precision applications.
2. Ultra-Low Noise Operation (“Silent Pump”)
The screw profile design enables exceptionally smooth operation, with noise levels significantly lower than conventional gear pumps. SETTIMA three-screw pumps are renowned as “silent pumps,” making them particularly valuable in noise-sensitive production environments.
3. Excellent High-Pressure and High-Temperature Stability
The G55C series maintains outstanding performance stability under 250 bar high-pressure operation. The specially hardened screw material and precision clearance control ensure stable volumetric efficiency during long-term high-temperature, high-pressure operation.
4. Specifically Designed for Injection Molding Servo Systems
The G55C063FSBT150ED is optimized for injection molding machine servo-hydraulic systems. When paired with a servo motor, it enables precise on-demand flow delivery, significantly reducing energy consumption while maintaining molding precision. The pump shares identical mounting interfaces with other displacement variants in the series, facilitating system upgrades and displacement adjustments.
5. High Volumetric and Mechanical Efficiency
The three-screw design minimizes internal leakage, delivering volumetric efficiency far superior to conventional gear pumps. Additionally, rolling friction between screws replaces the sliding friction found in gear pumps, significantly improving mechanical efficiency and reducing heat generation.
6. Long Service Life and High Reliability
With over 45 years of three-screw pump manufacturing experience, SETTIMA’s G55C series features high-quality aluminum housing and specially hardened alloy steel screws. Precision machining and assembly processes ensure exceptional reliability during long-term continuous operation.
Application Areas
Injection Molding Machines – Core power component of servo-hydraulic systems, enabling on-demand oil delivery with servo motors
Die Casting Machines – Stable hydraulic power source under high-pressure, high-flow conditions
Hydraulic Presses & Forming Equipment – Smooth, pulsation-free high-pressure oil supply
Blow Molding Machines – Servo oil pump drive for precise forming pressure control
Machine Tools & Metal Processing Equipment – Precision hydraulic control systems
Extruders & Plastic Machinery – Continuous, stable hydraulic power supply
Lifting & Material Handling Equipment – Reliable hydraulic lifting systems
Metallurgy Equipment & Ball Mill Lubrication – High-pressure lubrication and cooling circulation systems
Expert Maintenance Tips
1. Fluid Cleanliness Management
Three-screw pumps are sensitive to fluid contamination. Recommended fluid cleanliness: ISO 4406 18/16/13 (NAS 1638 Class 9) or higher. Install a suction filter with minimum 100 μm filtration and a return line filter with 10 μm filtration.
2. Fluid Viscosity & Temperature Control
Mineral-based hydraulic oils conforming to ISO/DIN standards are recommended. Operating viscosity should be maintained within 10 – 400 cSt. Optimal operating temperature: 40 – 60°C, with allowable range of -20°C to +100°C. For cold starts, ensure fluid temperature is above -10°C to prevent cavitation due to excessive viscosity.
3. Speed Range and Selection Considerations
SETTIMA GR series three-screw pumps operate within a speed range of 150 – 6,500 rpm. For applications requiring speeds below 1,000 rpm or above 1,800 rpm, consult SETTIMA directly for verification.
4. Suction Conditions
Ensure suction lines are properly sealed to prevent air ingress. Suction vacuum should not exceed 0.3 bar (absolute pressure). Three-screw pumps have stringent suction requirements — suction line diameter should be sufficiently large and line length kept as short as possible to minimize suction resistance.
5. Alignment During Installation
Ensure concentricity between pump shaft and drive motor shaft does not exceed 0.05 mm, with angular misalignment within 0.5°. Flexible couplings are recommended to compensate for minor misalignment. When installing the coupling, avoid applying axial force and never use a hammer.
6. First Start-Up and Bleeding
Before initial start-up, pre-lubricate the pump by filling clean hydraulic oil through the housing ports. After start-up, run the pump in no-load operation for a few seconds to ensure sufficient lubrication. Three-screw pumps require thorough pre-lubrication before start-up — never allow the pump to run without oil. The pump must be bled before building up system pressure.
7. Periodic Maintenance
Replace hydraulic oil and filters every 2,000 operating hours or annually. Regularly monitor pump body temperature (surface temperature should not exceed 80°C) and listen for abnormal noise increases, which may indicate internal wear or cavitation. The screw set is a precision-matched assembly — periodic inspection of screw wear is recommended.
