497120-L

The 497120-L hydraulic cartridge belongs to the Vickers Hydraulic Accessories series and is produced by Vickers for integration into automated fluid power circuits. It uses an Intra-Vane cartridge design so that pressure chambers balance internal forces and reduce vibration in constant-displacement pump assemblies. The design number 30 distinguishes this version from earlier revisions and matches replacement parts in the same family. A fixed displacement of 36.4 cc per revolution (2.22 in³/rev) determines the flow output the circuit receives at any given shaft speed. When driven at its rated speed of 2700 rpm, the cartridge can deliver that volume without cavitation. Right-hand rotation is required, meaning the drive shaft must turn clockwise when viewed from the shaft end to align inlet and outlet ports correctly.

For installation, the cartridge relies on an elastomer seal sized for the pump body. The O-ring inside diameter is 3.2340 in (82.1436 mm), and the outside diameter is 3.3730 in (85.6742 mm), so the ring seats against both the housing groove and the cartridge rim with the proper stretch. An O-ring thickness of 0.1390 in (3.5306 mm) sets the radial compression needed to prevent external leakage at working pressures. The assembly tolerates a maximum continuous pressure of 210 bar (3000 psi), allowing it to support high-duty actuation cycles in hydraulic automation without premature wear. These sealing dimensions must be followed during maintenance to keep the cartridge seated and to maintain volumetric efficiency throughout service life.