Product Overview
The GR32 / GR40 Series are SMT16B-type three-screw pumps from SETTIMA（赛特玛）, an Italian company founded in 1978 and specialized in the design and manufacture of hydraulic three-screw pumps and screw rotor pumps, renowned for low noise, long service life, and high reliability. The GR Series three-screw pumps are also incorporated into the product portfolios of Parker and HYLINCO, offering broad interchangeability.
The GR SMT16B Series three-screw pumps feature a special screw tooth profile design, with smooth meshing surfaces between rotors that deliver pulse-free, stable fluid flow—eliminating the root cause of noise: pressure fluctuation. This series is a low-pressure (up to 40 bar) industrial three-screw pump, providing a reliable and quiet solution for industrial applications requiring long service life and extremely smooth fluid flow.
The GR SMT16B Series offers a wide range of models from GR20 to GR180. This page features three models: GR40SMT16BAC24RP (100 L/min flow), GR40 SMT16B-150L-S1 RF2 (150 L/min flow), and GR32 SMT16B 45L RF2 (45 L/min flow)—all featuring the SMT16B pump body with a rated pressure of 40 bar. These products enable direct form-fit-function interchangeability with original SETTIMA / Parker / HYLINCO units—no modifications to piping or mounting interfaces required. Our replacement solutions strictly adhere to SETTIMA technical standards and undergo 100% simulated in-service testing to ensure performance, reliability, and service life identical to OEM products.
Technical Specifications
Applicable Models (Primary):
GR40SMT16BAC24RP
GR40 SMT16B-150L-S1 RF2
GR32 SMT16B 45L RF2
Related Models in Series:
GR20SMT16B 8L / 12L / 15L / 23L S2 RF2
GR25SMT16B 25L / 30L S2 RF2
GR32SMT16B 35L / 55L / 75L S2 RF2
GR40SMT16B 100L / 125L S2 RF2
GR45SMT16B 180L / 210L S2 RF2
GR55SMT16B 250L / 300L / 330L / 380L S2 RF2
GR60SMT16B 440L / 500L S2 RF2
GR70SMT16B 560L / 600L / 660L / 800L S2 RF2
GR80SMT16B 1000L / 1200L S2 RF2
Series Technical Specifications (per SETTIMA / HYLINCO official documentation):
Product Series: SETTIMA GR SMT16B Three-Screw Pump
Pump Type: Three-Screw Pump
Rated Operating Pressure: 40 bar (4 MPa)
Body Material: Aluminum Alloy (Cast Iron optional)
Screw Material: Special Hardened Alloy Steel
Seal Material: NBR, FPM, EPDM
Rotation Direction: Clockwise (viewed from shaft end)
Speed Range: 100 – 3,600 rpm
Flow Range: 0 – 800 L/min (@1,500 rpm)
Inlet Absolute Pressure: 0.7 – 2 bar
Fluid Temperature Range: -20 to +80°C
Ambient Temperature Range: -15 to +60°C
Filtration: Inlet 100 μm, Pressure port 10–25 μm
Mounting: Any position
Mounting Standards: European BKT, SAE-A, or SAE-B
Port Connections: GAS thread or SAE 3000/6000 weld flanges
GR40SMT16BAC24RP Detailed Specifications:
Rated Operating Pressure: 40 bar (4 MPa)
Rated Flow: Approx. 100 L/min (@1,500 rpm)
Maximum Speed: 3,000 rpm
Rotation Direction: Clockwise
Body Material: Aluminum Alloy
Fluid Compatibility: Hydraulic Oil, Lubricating Oil
Operating Temperature Range: -20 to +80°C
GR40 SMT16B-150L-S1 RF2 Detailed Specifications:
Rated Operating Pressure: 40 bar (4 MPa)
Rated Flow: 150 L/min
Maximum Speed: 3,000 rpm
Rotation Direction: Clockwise
Body Material: Aluminum Alloy
Fluid Compatibility: Hydraulic Oil, Lubricating Oil
GR32 SMT16B 45L RF2 Detailed Specifications:
Rated Operating Pressure: 40 bar (4 MPa)
Rated Flow: 45 L/min
Maximum Speed: 3,000 rpm
Rotation Direction: Clockwise
Body Material: Aluminum Alloy
Fluid Compatibility: Hydraulic Oil, Lubricating Oil
Key Technical Advantages
1. Three-Screw Special Profile Design — Zero-Pulsation Flow
The GR Series three-screw pumps feature a special screw tooth profile design, with smooth meshing surfaces between rotors that deliver pulse-free, stable fluid flow. This design eliminates pressure fluctuation at its source, ensuring extremely stable output flow—particularly suitable for lubrication and cooling systems requiring high pressure stability.
2. Ultra-Low Noise Operation — No Additional Noise Reduction Needed
SETTIMA focuses on noise reduction through optimized design and precision manufacturing. The GR Series three-screw pumps operate at significantly lower noise levels than conventional gear pumps. The running sound is smooth and low-frequency, barely perceptible in most industrial environments—eliminating the need for additional soundproofing or noise reduction measures.
3. No Trapped Volume — Higher Pressure and Flow Capacity
The GR Series three-screw pump design eliminates the “trapped volume” phenomenon. This means the pump can handle higher pressures and flow rates while avoiding the vibration, noise, and efficiency losses caused by trapped volume—delivering higher efficiency compared to other rotor pumps.
4. Long-Life Design — Maintenance-Free Operation
Three-screw pumps feature no metal-to-metal contact between screws or between screws and the pump body—relying instead on the pumped fluid to form a lubricating film, resulting in extremely low wear. The GR Series three-screw pumps are a reliable, quiet solution for industrial applications requiring long service life. The aluminum alloy body (cast iron optional) and special hardened alloy steel screws ensure long-term reliable operation.
5. Wide Media Compatibility and Operating Range
The GR SMT16B Series three-screw pumps are suitable for lubricating oil, hydraulic oil, fuel oil, and various other media. With a speed range of 100 to 3,600 rpm, flow range of 0 to 800 L/min, and operating temperature range of -20 to +80°C, the series flexibly adapts to diverse industrial applications.
Application Areas
Lubrication Systems: Gearbox lubrication, turbine lubrication, compressor lubrication
Hydraulic Power Systems: Low-pressure hydraulic power units, machine tool hydraulic systems
Cooling Circulation Systems: Power pack cooling, industrial equipment cooling circulation
Filtration Systems: Low-pressure filtration, oil purifiers, lubricating oil filtration
Transfer Systems: Lubricating oil / hydraulic oil / fuel oil transfer
Energy Sector: Hydropower, wind turbine lubrication and cooling
Industrial Machinery: Presses, plastic injection molding machines
Mobile Equipment: Forklifts, electric/hybrid vehicles
Expert Maintenance Tips
1. Installation Precautions
The GR Series three-screw pumps are uni-directional rotation pumps—verify that the system‘s required rotation direction matches the pump’s identification marking before installation. This series features standard clockwise rotation.
Ensure coaxial alignment between the pump and drive shaft; flexible couplings are recommended to avoid radial loads on the pump shaft.
The pump body can be mounted in any position.
Inlet absolute pressure should be maintained at 0.7 – 2 bar.
2. Fluid Management
Use mineral hydraulic or lubricating oils conforming to ISO VG 32 / VG 46 / VG 68 standards.
Fluid temperature should be maintained within -20 to +80°C.
Inlet filtration should be no less than 100 μm; pressure port filtration should be 10–25 μm.
Prime the pump by ensuring the housing is filled with fluid before initial start-up. Never run the pump dry. Three-screw pumps rely on the pumped fluid to form a lubricating film—dry operation will cause severe damage.
3. Start-Up & Commissioning
Use jog start method for initial start-up; verify correct rotation direction before continuous operation.
Allow the pump to run under no-load (low pressure) conditions for 2-3 minutes to purge air and ensure proper lubrication.
Gradually increase to operating pressure (up to 40 bar) while monitoring noise, temperature, and system pressure for normal operation.
4. Routine Maintenance
The GR three-screw pump itself is maintenance-free; however, regular maintenance of the entire hydraulic/lubrication system is essential for trouble-free pump operation.
Regularly inspect system fluid cleanliness and replace filters as needed.
Regularly inspect coupling wear and coaxial alignment between the pump and drive shaft.
