TROUBLE SHOOTING HYDRAULIC CYLINDERS

Hydraulic Cylinder Leakage

Hydraulic cylinder leakage occurs for a number of different reasons and it is important to identify the cause quickly so the problem can be corrected. A leaking hydraulic cylinder can lead to inefficiency, unscheduled downtime, machine damage and environmental damage if not properly identified and corrected.

Here are some common locations of hydraulic cylinder leakage and things to check for:

Location Check
1 Between Barrel
and Heads
  • O-ring for any damage, knicks or cuts
  • Surface finish of the barrel where it touches the seal should be smooth, with no sharp edges
  • O-ring groove for any machine marks, debris, or surface imperfections
  • Barrel ends to make sure they are square
2 Between Gland
Bushing and Rod
  • Condition of the rod wiper. In harsh environments wiper damage leads to contaminants that in turn damage the piston rod seal
  • Wear pattern on Gland bushing. If there is wear only on one side, this could be caused by side load which will damage the seal and reduce cylinder life
  • Damage to surface of piston rod which will in turn damage the end gland seal
3 Between Gland
Bushing and Heads
  • Loose fit of gland bushing causing the O-ring not to seal properly. This can be caused by side load or improper machining of the gland bushing. Tight tolerance here is required
4 Ports
  • Surface finish of the heads where your hydraulic fitting connects
  • For Hydraulic cylinders SAE O-ring Boss Ports (ORB) are better than NPT for creating a seal and are highly recommended

Always review the system design requirements and make sure the cylinder is compatible for the work that is required. Westcoast Cylinders Inc. has over 50 years of experience designing hydraulic cylinders for the toughest industrial applications.

For further assistance, troubleshooting and preventive maintenance please contact Westcoast Cylinders . at: sales@royalcylinders.com

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At Royal Cylinders, our engineering team can rely on a large database of tested solutions. We have over two generations of collective experience and offer all of our knowledge to our clients. We will in turn manufacture the best performing cylinder for their specific applications. We have been solving application problems for over half a century and have built cylinders that stand up to meet the toughest job requirements. We've manufactured cylinders for corrosion resistance, severe load and shock environments.

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