Rexroth A8VO Series Excavator Main Pump | A8VO55, A8VO107 | 350 Bar Double Pump

Rexroth A8VO Series High-Pressure Double Pump for Excavators

Product Overview: The Rexroth A8VO series represents the pinnacle of high-power-density double axial piston variable pumps, engineered specifically as the Main Hydraulic Pump for medium-to-large excavators. By integrating two high-performance rotating groups within a single housing, the A8VO delivers massive flow output within a compact footprint. Integrated with advanced LA1KH or LA042 power controllers, this series dynamically senses engine load and modulates dual-pump flow for smooth, efficient compound movements during grueling excavation tasks.

Key Technical Advantages:

• Integrated Double Pump Architecture: The A8VO combines two independent piston units in one housing, providing synchronized or split flow delivery while optimizing the engine compartment’s space in modern machinery.

• Intelligent Cross-Sensing Control (LA1KH / LA042):

  • Model A8VO107LA1KH2/63R1 features the LA1KH regulator with Cross-Sensing capability, ensuring the combined power absorption of both pumps perfectly matches the engine’s peak output curve.

  • Model A8VO55LA042/61R1 provides precise constant power regulation, preventing engine stalls during high-resistance digging cycles.

• Heavy-Duty High-Pressure Durability: Rated at 350 Bar (5100 PSI) with peak cycles up to 400 Bar (5800 PSI). Reinforced swashplate bearings and precision valve plates ensure extended service life in mining and harsh construction environments.

• Thru-Drive Flexibility (F014/K01O): Features robust thru-drive capabilities. The F014 and K01O suffixes indicate support for tandem mounting auxiliary gear pumps for pilot systems or secondary circuits.

Detailed Models & Technical Parameters:

• Core Series: A8VO (Series 61 / Series 63).

• Detailed Config Codes: A8VO55LA042/61R1-NZG05K01O+ZP11, A8VO107LA1KH2/63R1-NZG05F014-K.

• Displacement: 55 cm³/rev / 107 cm³/rev (Individual displacement per pump unit).

• Pressure Ratings: Rated at 350 Bar (35 MPa); Peak cycles up to 400 Bar (40 MPa).

• Control Methods: LA1KH / LA042 (Cross-Sensing / Constant Power / Hydraulic Pilot).