GEAR MOTORS GHM SERIES
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The GHM Marzocchi gear motors (GHM1, GHM2, GHM3) offer high starting torque, resistance to pressures up to 295 bar, and displacements from 1.4 to 87 cm³/rev. Compact and reliable, they are ideal for mobile and industrial hydraulic applications.
Available in right-hand configuration, GHM…D, and left-hand configuration, GHM…S, with a wide range of displacements available for each group.
The GHM Marzocchi Gear Motors represent the evolution of bidirectional hydraulic motors, with a structure designed for high performance in harsh environments. Available in the GHM1, GHM2, and GHM3 series, they cover a wide range of application needs thanks to:
Displacements from 1.4 to 87 cm³/rev
Immediate starting torque, even in cold conditions
Maximum pressure up to 295 bar (PP)
Speeds up to 5000 rpm
Unidirectional and bidirectional configurations
External drainage through threaded port (G1/4, G3/8, UNF)
Special versions for high/low temperatures (-40 °C / +150 °C)
Case-hardened and tempered steel gears, with low-friction superfine finishing
Special alloy bushings with anti-friction treatment, with hydraulic compensation zones
High-strength extruded aluminum body
Cast iron flanges and covers with protective treatment (phosphating)
The internal hydraulic compensation design allows for high volumetric and mechanical efficiencies, drastically reducing leakage and improving lubrication.
| Feature | Description |
|---|---|
| Type | External gear hydraulic motors, unidirectional or bidirectional |
| Displacement range | From 1.4 to 87 cm³/rev (GHM1, GHM2, GHM3) |
| Maximum pressure (PP) | Up to 295 bar (depending on model) |
| Continuous pressure (PC) | Up to 270 bar |
| Intermittent pressure (PI) | Up to 280 bar |
| Maximum rotation speed | Up to 5000 rpm (GHM1); 4000 rpm (GHM2); 3500 rpm (GHM3) |
| Minimum rotation speed | From 700 to 400 rpm (depending on group) |
| Materials | Extruded aluminum body, cast iron flanges and covers, hardened and ground steel gears |
| Bushings | Die-cast aluminum alloy, with anti-friction bearings and hydraulic compensation |
| Lubrication | Oil film; external drainage required for reversible models |
| Standard operating temperature | From -10 °C to +80 °C |
| Compatible fluids | Mineral oils compliant with DIN 51525 / VDMA 24317, with anti-wear and anti-foam properties |
| Configurations | Unidirectional (GHM…D / GHM…S) or bidirectional (GHM…R), various flanges, shafts and ports |
| Typical applications | Mobile and industrial machinery, hydraulic power transmission, lifting, towing |
| Series | Displacement (cm³/rev) | Flow Rate (L/min @1500 rpm) | Max Pressure (bar) | Max Speed (rpm) | Drainage |
|---|---|---|---|---|---|
| GHM1 | 2.8 – 11.0 | 3.9 – 15.7 | up to 290 | up to 5000 | G1/4 |
| GHM2 | 4.5 – 28.2 | 6.4 – 40.1 | up to 295 | up to 4000 | G1/4 / UNF |
| GHM3 | 22 – 87 | 31 – 124 | up to 295 | up to 3500 | G3/8 / UNF |
Head Office:
Strada Statale 7 Via Appia, 68
82011 Airola (BN)
Legal Headquarters:
Via Tufara Scautieri, 6
83018 San Martino Valle Caudina (AV)
Tel.: +39 0823 950994
Fax: +39 0823 1607499
E-mail: info@lubeteam.it
Pec: lubeteam@legalmail.it
P.IVA: IT01251720627
