XCMG Spare Parts ALLOY KIDNEY-SHAPED RING 150003173

This alloy kidney-shaped ring, part number 150003173, is a direct-fit XCMG spare part used in select wheel loader and excavator driveline systems. It’s not a universal washer—it’s shaped specifically to lock into a machined groove on the axle or planetary hub.

Made from forged alloy steel with heat treatment, this ring handles high torque and vibration without bending or cracking. The kidney contour matches XCMG’s original design to maintain proper preload and axial positioning. Surface finish is smooth but not polished, just as factory spec requires.

You’ll typically replace this ring when rebuilding a final drive or tightening loose wheel bearing end play. It sits between the bearing and the retaining nut, so if it’s worn or flattened, the whole assembly can slip. Always measure thickness before installation—even a 0.2mm difference affects torque values.

Fitment includes XCMG models such as LW500KN, LW600KN, and ZL50GN. Not compatible with CAT or Komatsu hubs unless cross-checked by dimension. Outer diameter roughly 98mm, inner kidney cutout offset by 12mm. Best to compare old ring side-by-side.

No need for sealant or special tools—tap in gently with a brass punch. Replace as a set if both sides of the axle are opened. Genuine XCMG packaging includes a dry film anti-rust coating, so store it in a dry place until use.