401-00222B: This is a part number for a hydraulic pump made by Hitachi. Unfortunately, I could not find any additional information on this specific part number.
2401-9286: This is another part number for a hydraulic pump made by Hitachi. Again, I could not find any additional information on this specific part number.
AP2D25 and AP2D28: These are model numbers for Hitachi's axial piston pumps, which are used in a variety of hydraulic systems. Here are some general specifications for these models:
AP2D25:
Displacement: 25.4 cc/rev
Maximum operating pressure: 29.4 MPa
Maximum speed: 3500 rpm
Weight: 6.1 kg
AP2D28:
Displacement: 28.0 cc/rev
Maximum operating pressure: 29.4 MPa
Maximum speed: 3500 rpm
Weight: 6.1 kg
