ALM2-R-25-E1 Marzocchi High Pressure Low Noise Gear Motor 210bar

Product Overview

The ALM2-R-25-E1 and ALM2-R-30-E1 models are high-pressure low-noise aluminum gear motors fully interchangeable with the genuine Marzocchi ALM2 series (corresponding to the ALP pump series). Featuring a high-strength aluminum alloy body, precision gears and self-compensating bushings, these fixed-displacement reversible motors deliver high power density, low noise and reliable performance. Every unit undergoes 100% simulated duty-cycle testing to guarantee exact matching of flanges, shaft ends, ports and performance curves with original Marzocchi ALM2 motors. Ideal for mobile machinery, industrial equipment and auxiliary hydraulic circuits, they provide a reliable drop-in replacement that reduces spare-part costs and downtime.

Technical Specifications 

• Models: ALM2-R-25-E1 / ALM2-R-30-E1 (Marzocchi ALM2 series)
• Displacement (ALM2-R-25-E1): 17.9 cm³/rev
• Displacement (ALM2-R-30-E1): 21.1 cm³/rev
• Flow at 1500 rpm: 25.5 l/min (25-E1) / 30.1 l/min (30-E1)
• Continuous pressure (P1): 210 bar (25-E1) / 180 bar (30-E1)
• Intermittent pressure (P2): 200 bar (25-E1) / 170 bar (30-E1)
• Peak pressure (P3): 225 bar (25-E1) / 195 bar (30-E1)
• Max speed: 3600 rpm (25-E1) / 3200 rpm (30-E1)
• Control type: Fixed displacement external gear motor (reversible)
• Housing material: High-strength aluminum alloy
• Typical weight: approx. 3.3 kg (model dependent)
• Ports & flange: European flange + E ports (standard configuration)

Key Technical Advantages

1. High-strength aluminum alloy body and precision gears provide excellent power-to-weight and power-to-size ratios, ideal for compact installations.
2. Self-compensating bushings and optimized gear geometry significantly reduce noise and flow pulsation while maintaining high volumetric and mechanical efficiency.
3. Full dimensional interchangeability with genuine Marzocchi ALM2 series (flange, shaft and ports) verified by rigorous testing, enabling true drop-in replacement.
4. 100% simulated duty-cycle testing covering pressure, speed and flow curves guarantees factory performance matching original units and minimizes field failures.
5. Reversible design with multiple flange and shaft options enhances installation flexibility for medium-to-high pressure continuous duty.

Application Areas

Mobile machinery auxiliary drives, industrial equipment rotary actuators, agricultural machinery, construction equipment small circuits, conveyor systems, fan drives and other applications requiring high-pressure low-noise aluminum gear motors.

Expert Maintenance Tips

• Ensure precise shaft alignment with a flexible coupling; avoid applying radial or axial loads directly to the shaft end.
• Maintain adequate return and drain conditions to avoid excessive back pressure; verify rotation direction before first start-up.
• On first start-up, set the system relief valve to the lowest setting, run at low speed under no load for several minutes to purge air, then gradually raise pressure.
• Use anti-wear hydraulic oil with appropriate viscosity and maintain high fluid cleanliness; replace filters regularly.
• Periodically inspect shaft seals and mounting bolts; keep the seal area clean to extend service life.