497121-L

The 497121-L cartridge kit belongs to the Vickers Hydraulic Accessories series and is produced by Vickers for use in hydraulic automation where quick pump refurbishment is required. As a cartridge kit, it lets technicians replace the rotation group without disturbing external plumbing. The assembly follows design code 30, which matches the internal layout and materials of corresponding pump casings. A ring size 12 stator positions the rotor concentrically to maintain correct running clearance. The rotation group handles 12 gpm, providing steady flow for compact circuits. Ten vanes are fitted to the rotor so chamber volumes remain consistent and pulsation is minimized during operation.

The kit ships with an O-ring designated 154090 that seals the interface between the cartridge and the pump cover. This elastomer ring has an inside diameter of 82.1436 mm (3.2340 in) to sit accurately in the machined groove, while its outside diameter of 85.6742 mm (3.3730 in) ensures proper compression when bolted together. A cross-section thickness of 3.5306 mm (0.1390 in) supplies the radial squeeze needed to resist internal pressure and prevent bypass leakage. The specified seal dimensions work with the cartridge geometry to keep the fluid path tight, allowing the 497121-L to restore performance quickly during scheduled maintenance of automated hydraulic equipment.