Two Stage High/Low Hydraulic "Log Splitter" Pump, 0.19/0.52 cu in/rev (Front/Rear), 4-bolt Mounting Flange, 1/2" Straight w/woodruff key Shaft, Inlet: 1" tube; Outlet: 1/2" NPTF Ports, CW Rotation, Built in check valve and unloading valve

This pump uses a 4-bolt mounting flange, which should make it compatible with many standard log splitters. To be sure, you'll want to check the dimensions and mounting pattern against your existing pump.

Two-stage pumps like this one handle that kind of work pretty well. At low pressure it runs on the high-flow rear section, which is the 0.52 cubic inch side, to move the ram fast. Once resistance builds up, the unloading valve shifts flow to the front stage, which is the smaller 0.19 cubic inch side, to push hard through the tough stuff. The built-in check valve keeps things from backflowing between stages. For a 5 to 6 horsepower engine turning this at reasonable speed, that split displacement setup is exactly what log splitter duty is built around.

It matches a 4-bolt mounting flange and a 1/2 inch straight shaft that uses a woodruff key. Porting is also defined on this model with a 1 inch tube inlet and 1/2 inch NPTF outlet ports, so those connection types need to line up with what you are hydraulic connections.