Vane Pump Cartridge Series

Vane pump cartridge kits provide a fast, cost-effective way to restore hydraulic system performance without replacing the entire pump housing. The cartridge assembly contains all wearing internal components — simply remove the old cartridge and install the new one for a complete hydraulic rebuild in minutes.

HE PUMP supplies vane pump cartridge kits for Caterpillar hydraulic systems and other major brands. Each cartridge is manufactured to OEM dimensional specifications, ensuring direct-fit installation and reliable performance.

What's in a Vane Pump Cartridge?

A complete vane pump cartridge kit includes all the internal wearing components:

  • Rotor: Precision-balanced rotor with machined vane slots — the heart of the pump that drives fluid movement
  • Vanes: Wear-resistant sliding vanes that extend outward by centrifugal force to create pumping chambers
  • Cam Ring: Profiled inner ring that converts rotary motion into hydraulic flow by creating expanding and contracting chambers
  • Side Plates: Pressure-loaded plates that seal the ends of the pumping chamber to minimize internal leakage
  • Seal Kit (optional): O-rings, gaskets, and shaft seals needed for a complete rebuild

Advantages of Cartridge Replacement vs. Full Pump Replacement

Replacing only the cartridge assembly offers several key benefits over replacing the entire pump:

  • Reduced Downtime: Swap-out replacement takes minutes, not hours. Your machine is back in service faster
  • Lower Cost: Cartridge kits cost a fraction of a complete pump assembly — only pay for the wearing parts
  • Consistent Performance: A new cartridge restores pump output to factory specifications — pressure, flow, and efficiency all return to like-new levels
  • Reuse Existing Mounts: The pump housing, mounting flange, and plumbing stay in place — no need to break seals or re-plumb hydraulic lines
  • Less Hydraulic Fluid Loss: Since you are not removing the entire pump, less fluid is lost during the repair

When to Replace Your Vane Pump Cartridge

Watch for these warning signs that indicate the cartridge needs replacement:

  • Increased noise or rattling from the pump (worn vanes or damaged cam ring)
  • Reduced hydraulic flow or pressure at attachments
  • Intermitent flow — output fluctuates under load
  • Overheating hydraulic fluid (internal bypass from worn components)
  • Metal particles in the hydraulic filter or fluid

Compatible Brands & Applications

Our vane pump cartridge kits fit equipment from:

  • Caterpillar: Excavators (320, 325, 330, 345 series), wheel loaders, and industrial hydraulic power units
  • Komatsu: PC series excavators and WA series wheel loaders
  • Volvo: EC series excavators and L series wheel loaders
  • Industrial Equipment: Hydraulic power units for presses, injection molding machines, and material handling systems

How to Identify the Correct Cartridge Kit

Vane pump cartridges are model-specific. To ensure you get the correct kit, provide us with:

  • The pump model number (usually on a nameplate on the pump housing)
  • Your equipment model and serial number
  • Photos of the pump nameplate and the installed cartridge (if accessible)

Our technical team will verify compatibility before shipping your cartridge kit.

Preventing Premature Cartridge Wear

  • Keep hydraulic fluid clean: Vane pumps are sensitive to contamination — replace filters on schedule and use high-quality fluid
  • Avoid cavitation: Ensure the pump has adequate inlet pressure; restricted suction lines cause vane damage
  • Monitor operating temperature: Excessive heat degrades fluid and accelerates vane and cam ring wear
  • Replace cartridges proactively: If you notice rising noise or slight pressure drop, a cartridge swap now prevents a sudden failure later

Browse our full range of vane pump cartridge kits — or contact us with your pump model number for fast, accurate matching.

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