Understanding Mismatched Attachment Speeds in Your Excavator

Excavators are powerful machines used in various industries, capable of handling a wide range of attachments to perform different tasks. However, sometimes you may notice that the speed of each attachment doesn’t match your expectations. This can lead to inefficiencies and impact productivity. In this article, we will delve into the reasons why attachment speeds might not align with your expectations and explore the priority functions offered by different excavator makers to address this issue.

Reasons for Mismatched Attachment Speeds

1. Hydraulic System Capacity

One of the primary factors influencing attachment speed is the hydraulic system capacity of the excavator. The hydraulic system is responsible for powering the attachments, and if it is undersized or not optimized for a specific attachment, it may result in slower operating speeds. Insufficient flow or pressure from the hydraulic system can limit the attachment’s performance, leading to subpar results.

2. Attachment Size and Weight

The size and weight of an attachment can also impact its speed. Heavier attachments may require more hydraulic power to move efficiently, and if the excavator’s hydraulic system is not adequately designed to handle such attachments, it can lead to slower operation.

3. Compatibility and Calibration

Sometimes, mismatched attachment speeds can be attributed to compatibility and calibration issues. Each attachment may have unique hydraulic requirements, and if the excavator’s system is not calibrated correctly for a specific attachment, it may not perform optimally, resulting in varying speeds.

4. Wear and Tear

Over time, excavator components, including hydraulic systems and attachments, can experience wear and tear. This can affect the overall performance and speed of the attachments. Regular maintenance and timely replacement of worn-out parts are essential to ensure consistent attachment speeds.

Priority Function of Each Excavator Maker

Different excavator manufacturers offer priority functions that enable operators to prioritize certain hydraulic functions over others. These priority functions help improve the efficiency and performance of specific attachments, ensuring they receive the required hydraulic flow and pressure for optimal operation. Let’s explore some common priority functions offered by excavator makers:

Logic of Speed mismatch

1. Attachment Flow Control

Attachment flow control allows operators to adjust the flow rate specifically for different attachments. This feature ensures that each attachment receives an appropriate amount of hydraulic fluid, improving its speed and performance.

2. Attachment Pressure Control

Attachment pressure control allows operators to set the maximum hydraulic pressure provided to an attachment. This feature helps prevent damage to the attachment while maintaining consistent speed and power output.

3. Auxiliary Hydraulic Flow

Some excavator makers provide separate auxiliary hydraulic flow circuits. This allows specific attachments, such as hydraulic thumbs or augers, to have dedicated hydraulic supply, eliminating potential speed variations caused by sharing hydraulic power with other attachments.

4. Electronic Control Systems

Many modern excavators come equipped with advanced electronic control systems that monitor and adjust hydraulic flow and pressure automatically. These systems ensure optimal performance and speed of attachments by dynamically allocating hydraulic resources based on the current requirements.


When the speed of each attachment in your excavator doesn’t meet your expectations, it’s essential to consider factors such as hydraulic system capacity, attachment size, and calibration. Additionally, exploring the priority functions offered by different excavator makers can help address speed discrepancies and optimize attachment performance. By understanding these aspects and leveraging the appropriate priority functions, you can enhance your excavator’s productivity and ensure smooth operation across various tasks. Regular maintenance and attentive operation will further contribute to the longevity and efficiency of your machine and its attachments.

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