Straight Answer First
If you searched for a "Komatsu tractor hydraulic pump," here's the honest answer: Komatsu's product range is excavators, bulldozers, wheel loaders, articulated dump trucks, backhoe loaders, and forklifts — no agricultural tractors, and no history of making them either. Komatsu is purely a construction, mining, and material handling equipment manufacturer.
Some Komatsu machines use the word "tractor" in their name in a specific technical sense — a crawler dozer is sometimes called a "track-type tractor" in industry terminology — but that's not an agricultural tractor and is covered on our Komatsu Bulldozer page instead. If you're looking for a genuine farm tractor, Komatsu isn't the brand.