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5 Types of Hydraulic Cylinder Failure

As an ISO certified company, Select Fluid Power commits to quality programs. We conduct thorough testing on your hydraulic cylinder to find the cause of any failures. We then compile multiple reports to ensure the same failure does not occur again.

Let’s go over the five most common types of failure:

  1. Damaged Chromed Rod

It is easy to damage a chromed rod. Extensive damage can be caused by something as simple as contact with rocks or chain. It can also be caused by violent environments and transportation. If we take a look at the internal environment, there are a few scenarios to be aware of. New damage can occur and cause substantial damage to the chromed rod. It can happen if incorrect seals are used, and if there is poor clearance between the ID and OD.

Failed hydraulic cylinder repaired by Select Fluid Power
  1. Piston Damage

If dirt or dust infiltrate the system, scoring on the inner diameter of the barrel can occur. This can cause piston damage. It will also damage the piston seals as well. One of the best ways to prevent piston damage is ensuring that the hydraulic oil is clean.

  1. Gland Seal Damage

One of the major causes of gland seal damage is side loading on the hydraulic cylinder rod. The angled and uneven pressure from side loading the cylinder creates a force on the gland seal. This force affects the mechanics. It will create the need to replace the gland seal and mechanical components.

  1. Incorrect Seals Used in Prior Repair

If a company doesn’t re-calibrate their measuring tools, it is possible for a seal to have a margin of error. This margin of error can result in the failure of your hydraulic cylinder. That’s why working with an ISO certified company is so important. ISO certified companies are required to calibrate their measuring tools. This ensures that all measurements are exact and consistent every time.

  1. Over Pressuring the Hydraulic Cylinder

Despite being more uncommon than the other types of failure, it’s important to include this on our list. Over pressuring can occur in a variety of ways. The most common form comes from a mix of valve failures and released air. This causes pressure spikes, which cause the barrel to bulge. The multi-stage cylinder rod could even implode and the cylinder barrel explode. In severe cases, large collateral damage can occur, mainly damaging the pump and valve motor.

Each failure is different. Depending on which type of failure you experience, other systems and parts can be impacted. By determining what type of failure occurred, we can repair all damaged components and help you prevent further failures. How do we do this? We conduct a single or multi-stage rod cylinder inspection report, a plating report, and a detailed analysis report. These reports help us learn exactly how and why your cylinder failed. This helps prevent further downtime and is more cost-efficient.

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