Is Rexroth A8VO160 Fully Compatible with CAT 330/345 Excavators?

1. Structural Compatibility

The Rexroth A8VO160 is a swashplate-type variable displacement pump designed for heavy-duty excavators. It features mounting holes, drive shaft dimensions, and control ports that align with the OEM hydraulic systems of CAT 330 and 345 series machines. No modifications are required for installation.

2. Performance Match

• Displacement: 160cc/rev, equivalent to CAT’s original main pumps.

• Max Operating Pressure: Up to 400 bar, suitable for demanding excavation operations.

• Control Options: Compatible with load sensing, power control, and proportional electronic control modes, making it adaptable to CAT’s ECU systems.

3. Common Replacement Use Cases

The A8VO160 is widely used as a direct replacement in models such as CAT 330, 330B, 330BL, 330LN, 345B, 345BL, and 345BLC, especially when the original pump:

• Experiences unstable pressure or low output flow

• Causes sluggish digging and swing performance

• Triggers frequent hydraulic warnings or overheating issues

4. Recommended Spare Parts for Replacement

For optimal performance and longevity, consider replacing these core components together:

• Piston Group

• Cylinder Block

• Valve Plate (L/R)

• Drive Shaft

• Control Piston + Disk Spring

5. Conclusion

The Rexroth A8VO160 is fully compatible with CAT 330/345 excavators in both mechanical fit and operational performance. It serves as a reliable and cost-effective alternative for main pump repair or system upgrades.