Rexroth A6VM355 Variable Motor | A6VM355HA, A6VM355HD | 450 Bar

Rexroth A6VM355 Series High-Pressure Axial Piston Variable Motors

Product Overview:

The Rexroth A6VM355 Series motor is the recognized “power heart” of hydrostatic transmissions, specifically engineered to handle the most demanding heavy-duty drive requirements. As an axial piston variable motor featuring a bent-axis design, the A6VM355 is renowned for its ultra-wide control range (up to $V_{max}/V_{min} = 3.47$) and exceptional power-to-weight ratio. This selection features core configurations: A6VM355HA1T/63W2-VZH010A (Automatic high-pressure control) and A6VM355HD2/61W-PZH010B (Hydraulic direct control). Whether in large crawler drives, winch systems, or heavy industrial mixing plants, these motors deliver consistent torque at peak pressures up to 450 Bar.

Key Technical Advantages:

• Superior Speed Versatility: Allows seamless displacement adjustment from maximum to minimum, perfect for applications requiring both high starting torque and high operational speeds.

• Advanced Control Options (HA/HD):

  • HA Control: Automatically adjusts displacement based on working pressure to optimize the balance between torque and speed.

  • HD Control: Hydraulic pilot-operated control offering rapid response times and high positioning precision.

• High-Pressure Robustness: Rated for 400 Bar continuous and 450 Bar peak pressure. Built with reinforced rotating components and bearings for extended service life in harsh environments.

• Excellent Starting Characteristics: The specialized spherical valve plate ensures high mechanical efficiency, providing smooth startup and creep-free operation even at extremely low speeds.

• Target Applications: Crawler travel drives, heavy-duty winches, rotary drilling rig power heads, Tunnel Boring Machines (TBM), and industrial conveyor systems.

Detailed Models & Parameters:

• Core Series: Rexroth A6VM Series 61/63 (Axial Piston Variable Motor).

• Model Keywords: A6VM355, AA6VM355, A6VM355HA1T, A6VM355HD2, A6VM355/63W, A6VM355/61W.

• Technical Specs Decoding:

  • 355: Nominal displacement of 355 cm³/rev.

  • HA1T: Automatic high-pressure control with override function.

  • HD2: Hydraulic direct control with pilot pressure proportioning.

  • VZH010A / PZH010B: Identifiers for sealing configurations, case drain ports, and valve block mounting orientations.

• Pressure Specs: Nominal pressure 400 Bar (5800 PSI), Peak pressure 450 Bar (6500 PSI).