Marzocchi gear pump ALP1A-D-12-FG detailed introduction

1. Basic Information

• Model: ALP1A-D-12-FG
• Brand: Marzocchi Pompe
• Pump Type: External Gear Pump (Single, Monodirectional)
• Series: ALP Series (Aluminium Gear Pump, Group 1)
• Application: Suitable for industrial and mobile hydraulic systems, adaptable to various light to medium load working conditions

2. Performance Parameters

• Displacement: 11 cc/rev (Consistent with the ALP1 series specification corresponding to the model code “12”)
• Maximum Continuous Pressure: 170 bar
• Maximum Intermittent Pressure: 185 bar
• Maximum Peak Pressure: 200 bar
• Maximum Speed: 2200 rpm
• Theoretical Flow Rate: 24.2 L/min (Calculated at 2200 rpm: 11 cc/rev × 2200 rpm ÷ 1000)
• Volumetric Efficiency: ≥ 95% (Under working conditions of 150 bar and 2000 rpm)
• Mechanical Efficiency: ≥ 94% (Under rated working conditions)
• Noise Level: ≤ 72 dB(A) (Measured 1 meter away under no-load condition at 1800 rpm)

3. Structural & Material Parameters

• Rotation Direction: Clockwise (CW) when viewed from the shaft end, corresponding to code “D” in the model
• Flange Type: Standard European Cast Iron Flange (Code “FG”), complying with relevant installation standards for easy system integration
• Shaft Specification: Standard shaft configuration matching the ALP1A series, with woodruff key for power transmission, torque specification matching M12×1.5 hexagonal nut (tightening torque: 50 ± 4 Nm)
• Port Type: Standard European ports, threaded ports with O-ring seal (complying with SAE J 1926/1 (ISO 11926-1) standard), thread depth 12.7 mm
• Material:
  • Pump Body & Cover: Aluminum alloy (lightweight, corrosion-resistant, die-cast pressure-resistant material)
  • Gears: Special hardened steel (ensuring high efficiency and long service life)
  • Seals: NBR material (excellent sealing performance, adapting to conventional hydraulic fluids)
  • Flange: Cast iron (enhancing structural stability and load-bearing capacity)
• Sealing Performance: Equipped with compensation seals and anti-extrusion components to prevent hydraulic fluid leakage under high pressure conditions

4. Operating Conditions

• Hydraulic Fluid Requirement:
  • Recommended Fluid: Anti-wear hydraulic oil (HM 46 or HM 68)
  • Viscosity Range: 6 – 500 cSt (Recommended operating viscosity: 10 – 100 cSt, especially during startup)
  • Viscosity Index: ≥ 140
  • Cleanliness Level: ISO 4406 18/15 or higher
  • Maximum Water Content: ≤ 0.1% (Volume ratio)
• Temperature Range:
  • Operating Fluid Temperature: -10°C to +80°C
  • Ambient Operating Temperature: -10°C to 50°C (Temperature control system required if exceeding this range)
  • Maximum Allowable Housing Temperature: ≤ 120°C
• Inlet Pressure: Recommended ≥ -0.8 bar (Minimum ≥ 0.2 bar to avoid cavitation)
• System Requirements: Equipped with proper filtering unit to prevent foreign particles from entering the pump and damaging components; intake and delivery pipelines should be reasonably arranged to avoid fluid turbulence

5. Installation & Maintenance

• Installation Type: Horizontal installation (recommended) or vertical installation (requires special customization)
• Mounting Torque: Mounting bolt specification and torque to be determined according to actual installation requirements, ensuring stable fixation
• Maintenance Cycle: Oil change cycle ≥ 2000 hours; regular inspection of oil level, temperature and seal integrity
• Service Life: Average Mean Time Between Failures (MTBF) ≥ 8000 hours; major maintenance cycle ≥ 15000 hours; seal service life ≥ 6000 hours (under recommended oil conditions)

6. Model Code Explanation

• ALP: Series identifier (Aluminium Gear Pump)
• 1A: Group 1, specific model variant in the ALP1 series
• D: Rotation direction (Clockwise, viewed from the shaft end)
• 12: Displacement code, corresponding to 11 cc/rev displacement
• FG: Flange specification (Standard European Cast Iron Flange)