Hydraulic Gear Pump Series - Z1, Z2, Z3, and W from Ronzio
Our range of gear pumps provides reliable, efficient fluid delivery for open‑circuit hydraulic systems, offering compact and durable designs suited to a wide variety of flow and pressure requirements.
This range includes Group 1, 2, 3, and 4 pumps to cover a broad range of application needs.
Discover unparalleled hydraulic performance with Ronzio’s cutting-edge Group 1, Group 2, and Group 3 series of hydraulic gear pumps. Engineered to Ronzio’s exacting standards, these pumps redefine efficiency and reliability.
The Group 1 Z1 series, featuring cast iron and alloy covers, handles pressures up to 300 bar, while maintaining axial equilibrium through pressure balanced bushing blocks. With exceptional volumetric efficiency averaging 95%, its versatile range of capacities (0.8 to 10.5 cm3/rev) meets diverse application demands. The extruded aluminium body ensures robustness, coupled with a low-noise gear tooth profile for smooth operation.
The Group 2 Z2 series offers high-pressure capabilities and a volumetric efficiency of 95-97%. Its easy adaptability with various shafts, flanges, and ports, along with the option for high-temperature seals, ensures optimal performance.
For high-performance Group 3 options, explore both the Z3 and W3 series. The Z3 series, with cast iron covers and pressure balanced axial compensation, manages up to 280 bar pressures. Meanwhile, the W3 series, with a cast iron body and cover, achieves up to 300 bar pressures, maintaining a 95% volumetric efficiency.
Experience consistent operation with single and bi-rotational pumps and motors, as well as easy-to-make tandem pumps and rotation changes. Elevate your hydraulic systems with Ronzio’s finely engineered gear pumps, designed for precision and longevity.
Group 1 – Z1 series aluminium hydraulic gear pump main features
- Cast iron and alloy covers
- High pressure option: up to 300 bar max. continuous pressure ( 4350 psi )
- Axial compensation achieved using pressure balanced bushing blocks.
- High volumetric efficiency: average 95%
- Wide range of capacities : 0.8 -1.1-1.6-2.1-2.6-3.2-3.7-4.2-4.8-5.5-6.2-7.8-8.8 -10.5 cm3/ rev
- Extruded aluminium body
- Gear tooth profile accurately projected providing low noise operation.
- A wide variety of shafts, flanges and ports are available to meet specific application requirements.
- High-temperature seals available.
- Single rotational pumps and motors.
- Bi-rotational pumps and motors.
Group 2 – Z2 series aluminium hydraulic gear pump main features
- Cast iron covers for high performances
- High pressure option: up to 300 bar max. continuous pressure ( 4350 psi )
- Axial compensation achieved using pressure balanced bushing blocks.
- High volumetric efficiency: average 95-97%
- Wide range of capacities : 4-6-8-11-14-17-20-25-31-cm3/ rev.
- Extruded aluminium body
- Gear tooth profile accurately projected providing low noise operation.
- A wide variety of shafts, flanges and ports are available to meet specific application requirements.
- High-temperature seals available.
- Single rotational pumps and motors.
- Bi-rotational pumps and motors.
- Easy-to-make tandem pumps and easy change of rotation.
Group 3 – Z3 series hydraulic gear pump main features
- Cast iron covers for high performances
- High pressure option: up to 280 bar max. continuous pressure
- Axial compensation achieved using pressure balanced bushing blocks.
- High volumetric efficiency: average 95-97%
- Wide range of capacities : 20-25-30-35-40-45-50-55-60-64-70-80-90 cm3/ rev.
- Extruded aluminium body
- Gear tooth profile accurately projected providing low noise operation.
- A wide variety of shafts, flanges and ports are available to meet specific application requirements.
- High-temperature seals available.
- Single rotational pumps and motors.
- Bi-rotational pumps and motors.
- Easy-to-make tandem pumps and easy change of rotation.
Group 3 – W3 series cast iron hydraulic gear pump main features
- Cast iron covers and body for high performance
- High pressure option: up to 300 bar max. continuous pressure ( 4350 psi )
- Axial compensation achieved using pressure balanced bushing blocks.
- High volumetric efficiency: average 95%
- Gear tooth profile accurately projected providing low noise operation.
- A wide variety of shafts, flanges and ports are available to meet specific application requirements.
- High-temperature seals available.
- Single rotational pumps and motors.
- Bi-rotational pumps and motors.



























