Compactor Hydraulic Pumps

What this page covers

The pump is the heart of the compactor's hydraulic system — driven by the motor, it converts rotational motion into hydraulic pressure that drives the ram cylinder. Pump types fall into three families: gear pumps (most common, simplest, lowest cost), vane pumps (mid-range, quieter), and piston pumps (highest pressure, used in heavy-duty applications).

Most compactor pumps fail by gradual wear — internal clearances widen, efficiency drops, and the ram cycles slower. The warning sign is usually a longer cycle time before complete failure. PRT stocks OEM-equivalent replacement pumps for all common compactor brands; rebuild kits are also available for some pump models.

How to choose

Identify the pump by displacement (gallons per minute or cubic inches per revolution), pressure rating (PSI), drive style (close-coupled to motor, foot-mount with belt drive, or through-shaft), and OEM part number. PRT customer service can confirm a direct replacement.

If your existing pump is discontinued, PRT can recommend a current-production equivalent that drops into the same mounting location with the same displacement and pressure rating.

Hydraulic pump types

• Gear pumpsMost common — simple, reliable, fixed displacement.
• Vane pumpsQuieter than gear pumps, mid-range pressure capability.
• Piston pumpsHighest pressure (3000+ PSI), for heavy-duty industrial compactors.
• Close-coupled pumpsDirect motor-flange mount for compact power units.
• Foot-mount pumpsBelt-drive installations with separate motor and pump.
• Pump rebuild kitsWhen the pump body is reusable but internals are worn.