OEM External Gear Pump 31.5cc For Concrete Mixer Truck

Hydraulic Gear Pump
December 19, 2025
Category Connection: Hydraulic Gear Pump
Brief: Get an inside view of features that deliver consistent results in daily use. This video provides a detailed walkthrough of the OEM External Gear Pump 31.5cc, showcasing its compact design, construction materials, and performance in concrete mixer truck applications. You'll see how this pump offers direct replacement compatibility with international brands and learn about its operational advantages in medium- to high-pressure hydraulic systems.
Related Product Features:
  • Compact and lightweight structure crafted from high-quality aluminum or cast iron for corrosion resistance.
  • Excellent self-priming performance suitable for medium- and high-pressure hydraulic systems.
  • High volumetric efficiency of 93% or above with minimal flow pulsation.
  • Fully compatible with international brands like Parker and Rexroth for direct replacement.
  • Strong reliability with oil contamination insensitivity and easy maintenance features.
  • Operates at rated pressure of 20 Mpa and maximum pressure of 25 Mpa.
  • Counterclockwise rotation direction with speed range of 600-3000 r/min.
  • Simple design with fewer parts for easy manufacturing and cost efficiency.
FAQs:
  • Is this external gear pump compatible with existing hydraulic systems from brands like Parker or Rexroth?
    Yes, this OEM External Gear Pump 31.5cc is fully compatible with internationally renowned brands such as Parker and Rexroth, particularly as an alternative to PGP and GP series pumps. It allows for direct replacement of original pumps without requiring system modifications.
  • What are the main advantages of using this external gear pump in concrete mixer trucks?
    The pump offers several key advantages including a simple and compact structure for easy manufacturing, high reliability with strong self-priming capability, high volumetric efficiency typically above 90%, and lightweight corrosion-resistant construction ideal for mobile equipment like concrete mixer trucks.
  • What are the technical requirements for maintaining this hydraulic gear pump?
    The pump assembly complies with JB/T7041-2006 standards and requires clean hydraulic oil - L-HM46# in summer and L-HM32# in winter. Oil that has deteriorated or solidified must be replaced immediately, and protective caps should be used on inlet and outlet ports to maintain internal cleanliness.