How does a hydraulic gear pump work? Where is the actual tearing and wearing of the pump and why would you eventually have to change it. By the way, it is always a good idea to maintain clean oil for good preventive maintenance, search for "ISO 4406" in the search bar for maintenance videos.
Catalog for geroler / orbital hydraulic motors for low speed high torque applications. Many of these units are standard hydraulic motors in the industry and can easily replace other brands such as danfoss hydraulic motors, eaton hydraulic motors, char lynn hydraulic motors, etc.
Have you ever tried to change a hydraulic pump for another unit maybe because the one you have is too old, too expensive, and have to wait too long to get it? Here you will find a video on what you need to look for to cover your technical details to find another unit you can use to replace your old pump.