Bosch Rexroth AA6VM355 high pressure hydraulic motor

The AA6VM355 belongs to Rexroth's A6V series, known for their bent-axis design. But what sets this particular model apart is its ability to handle continuous operating pressures up to 450 bar (6,525 psi) and peak pressures as high as 500 bar. That's serious power density for a motor that weighs roughly 95 kg (210 lbs) and displaces 355 cc per revolution.

Control Options: Matching the Motor to Your Application

One size doesn't fit all when it comes to control. The AA6VM355 offers several integrated control variants:

HD-Constant Power Control

Best for applications where you need maximum torque at low speed and reduced torque at high speed (e.g., winches, hoists). It automatically adjusts displacement based on pressure feedback.

HS-Speed-Sensing Control

Ideal for mobile equipment like wheel drives. It maintains a set speed regardless of load changes by modulating displacement.

EP-Electronic Proportional Control

For systems requiring precise remote adjustment via PLC or CAN bus. Common in offshore drilling rigs and tunnel boring machines.

Installation Best Practices for Longevity

Even the best motor will fail prematurely if installed carelessly. Here are three critical considerations:

1. Case Drain Line Sizing

The AA6VM355 generates internal leakage that must return to tank. Use a case drain line rated for at least 10 bar backpressure. Undersized lines cause seal failure within hours.

2. Shaft Alignment

Misalignment between motor and driven load creates radial loads that destroy bearings. Use a flexible coupling and check alignment with a dial indicator—target less than 0.05 mm runout.

3. Filtration

High-pressure motors are sensitive to contamination. Install a 10-micron absolute filter in the pressure line and change it every 500 hours initially, then extend intervals based on oil analysis.

For more information on the AA6VM355 hydraulic motor, please visit https://www.baolilaihydraulic.com/product/.

Specifications

Selection Table

Q1: What’s the typical lifespan in a mobile application?

A1: With proper filtration and oil changes every 2,000 hours, expect 8,000–12,000 hours before major overhaul. In stationary industrial use, 20,000+ hours is common.

Q2: How do I troubleshoot low torque output?

A2: First, check inlet pressure at the motor port—if below 350 bar under load, look for pump wear or relief valve issues. Next, measure case drain flow; excessive leakage indicates piston or slipper wear.

Q3: What is the price and delivery time of the AA6VM355 hydraulic motor?

A3: The specific price and delivery time will be provided based on the specific model you provide.

Q4:How to purchase an AA6VM355 hydraulic motor?

A4: You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products through various methods.