GC Series Gear Pump, 0.39 cu in/rev, 4-bolt 1.78 in. pilot Mounting Flange, 0.50 in. dia. X 1.50 in. extension Shaft, SAE-10 Side Ports, Bi-Directional with check valves Rotation

It uses a 4-bolt 1.78 in. pilot mounting flange and it comes with a 0.50 in. diameter shaft with a 1.50 in. extension.

For a mid-size log splitter, those numbers line up pretty well. At 3 GPM and 1600 PSI, you've got enough flow and pressure to drive most standard single-stage splitter cylinders without pushing the pump past its limits. One thing worth keeping in mind is that the ratings on this unit are based on anti-wear hydraulic fluid at 200 SSU viscosity, so as long as your fluid matches up, you should get consistent output. The pump also handles speeds between 750 and 4000 RPM, so your prime mover has plenty of range to work within.

Ratings are based on using anti-wear hydraulic fluid with a viscosity of 200 SSU. If you're looking to use something different, it's best to get in touch with us so we can advise you.