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Parker P31 series agricultural planter gear pump

Parker P31 Series Gear Pump for Agricultural Seeders

The Parker P31 Series Gear Pump is a high-performance hydraulic component specifically engineered for integration with agricultural seeding equipment, delivering reliable fluid power transmission to ensure consistent and efficient seeding operations. Designed with the rigorous demands of farm environments in mind, this gear pump combines robust construction, exceptional durability, and optimized efficiency to support the critical performance of Parker agricultural seeders.

Core Features

  • Durable Construction: Built with high-strength cast iron housing and precision-hardened alloy steel gears and shafts, the P31 Series offers superior resistance to wear, corrosion, and contamination common in agricultural settings, ensuring long service life even under continuous operation .
  • Pressure Balance & High Efficiency: Equipped with a unique pressure-balanced thrust plate, the pump minimizes friction and leakage, maintaining volumetric efficiency up to 95% across all operating ranges. This design optimizes power utilization and reduces energy loss during seeding operations .
  • Heavy-Duty Performance: Capable of withstanding maximum operating pressure up to 3000 PSI (207 bar) and maximum operating speed up to 3000 RPM, the P31 Series provides stable fluid flow (up to 38.4 GPM) to meet the high-torque requirements of seeding machinery hydraulic systems .
  • Versatile Configurations: Available in single, tandem, or multiple-section configurations, with a wide range of porting (SAE, NPT, BSP), mounting (SAE B/C/D flanges), and shaft (splined, keyed) options. This versatility allows seamless integration with different models of Parker agricultural seeders .
  • Reliable Quality Assurance: Every P31 Series gear pump undergoes 100% factory testing to ensure compliance with application specifications, guaranteeing consistent performance and reliability in field operations .
  • Interchangeability: Fully interchangeable with Parker Commercial Intertech, Permco, Muncie, and Metaris P31 series pumps, facilitating easy maintenance and replacement for existing seeding equipment fleets .

Technical Specifications

ParameterValue
Maximum Operating Pressure3000 PSI (207 bar)
Maximum Operating Speed3000 RPM
Maximum Flow Rate38.4 GPM (145.3 LPM)
Displacement RangeUp to 65 cm³/rev (3.9 in³/rev)
Body MaterialHigh-strength cast iron
Fluid Temperature Range-20°C to 80°C (0°F to 180°F)
Fluid CompatibilityStandard hydraulic fluids, phosphate-ester
Mounting StandardsSAE B 4-bolt, SAE C 2-bolt, SAE D 4-bolt
Port ConnectionsSAE, ISO, NPT, BSPP, ODT

Application Compatibility

The P31 Series Gear Pump is perfectly matched to Parker agricultural seeders, providing essential hydraulic power for key seeding functions such as seed metering, row unit adjustment, and hydraulic drive systems. Its compact design and versatile mounting options enable easy integration into various seeder models, while its resistance to harsh farm conditions (dust, vibration, temperature fluctuations) ensures uninterrupted performance during critical planting seasons. Additionally, the pump’s multiple configuration options allow customization to meet the specific hydraulic requirements of different seeding applications, from small-scale precision seeding to large-area commercial farming .

All Parker P31 Series Gear Pumps are individually packaged with protective materials to ensure safe transportation and storage. For maintenance and replacement, genuine Parker parts are recommended to preserve the pump’s performance and compatibility with agricultural seeding equipment.