GR40-SMT16B-150LAC28-B5-RF2 Settima Screw Pump 150L 40bar

Product Overview

The GR40-SMT16B-150LAC28-B5-RF2 is a precisely configured model from Settima Meccanica’s GR series (covering GR20 to GR80 and beyond) of three-screw pumps. Designed for industrial low-to-medium pressure applications, this pump delivers pulse-free, low-noise smooth flow output. Manufactured to exact Settima original specifications, it offers 100% drop-in interchangeability in mounting flange, shaft, and interfaces for direct replacement without system modification. Every unit undergoes 100% simulated duty-cycle testing to guarantee reliable performance with hydraulic oils, lubricants, and similar media, making it ideal for industrial hydraulic and lubrication systems demanding quiet operation, minimal pulsation, and compact installation.

Technical Specifications 

• Full Model Code: GR40-SMT16B-150LAC28-B5-RF2
• Series: Settima GR SMT16B Three-Screw Pump
• Size: GR40
• Nominal Flow: 150L (approx. 150 L/min at 3000 rpm; approx. 75 L/min at 1500 rpm)
• Continuous Working Pressure: 40 bar (SMT16B pressure stage)
• Peak Pressure: 50 bar
• Speed Range: 500–3600 rpm
• Shaft Type: AC28 (hollow shaft Ø28 mm for direct motor mounting)
• Mounting Flange: B5 (approx. Ø250 mm, suitable for motor sizes 100/112)
• Relief Valve: RF2 (internal fixed setting approx. 10 bar)
• Body Material: Standard aluminum
• Seal Material: NBR (EPDM/Viton options available)
• Rotation: Standard clockwise (viewed from shaft end)
• Control Type: Fixed-displacement three-screw
• Approximate Weight: 7–11 kg (aluminum body)
• Compatible Fluids: Hydraulic oil (DIN 51524), lubricating oils, emulsions, etc.

Key Technical Advantages

• True three-screw design delivers completely pulse-free flow with extremely low noise levels, significantly reducing system vibration and secondary noise-control costs.
• Hollow-shaft direct-drive configuration (AC28-B5) greatly simplifies installation, saves space, and enhances overall system compactness and reliability.
• Precision-machined screws and aluminum housing provide high volumetric efficiency, excellent suitability for medium-to-high viscosity media, and superior wear resistance for long service life.
• Integrated RF2 relief valve offers built-in overpressure protection while maintaining a simple, robust structure.
• 100% simulated duty-cycle testing and optimization for industrial lubrication, hydraulic power, and cooling-circulation duties ensure easy maintenance and high interchangeability.

Application Areas

Industrial hydraulic power units, gearbox and bearing lubrication systems, cooling/heating circuits, machine-tool and press hydraulics, filtration and recycling systems, marine auxiliaries, paper and pulp equipment, and any fixed industrial application requiring low-noise, pulse-free smooth flow.

Expert Maintenance Tips

Ensure proper flange and shaft alignment during installation; verify key and locking security for hollow-shaft direct-drive versions. Maintain fluid cleanliness at ISO 4406 19/17/13 or better and select viscosity appropriate to the medium (standard to high-viscosity screw options S1–S4 available). Before initial start-up, fully bleed the system and confirm adequate suction conditions (minimum absolute pressure approx. 0.7 bar). Periodically inspect shaft seals and relief-valve function; avoid dry running. For high-viscosity or aerated media, consult special screw configurations. During cold starts, build speed and pressure gradually to ensure proper lubrication.