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Hydraulic Cylinder Repair

RHK services & repairs all types of hydraulic cylinders. From leaky seals to complete rebuilds, RHK can have your hydraulic cylinder restored to OEM specs and back in service FAST! Your cylinder will be completely inspected and a repair estimate will be provided for approval before we commence repairs. All recommended repairs and service is covered by a full warranty. And furthermore, by understanding a customer’s needs, we can modify a cylinder to better suit the application.  

We get it. Downtime is expensive. 

We’ll get you back to work FAST!

Hydraulic Cylinder Service Repair Gland Barrel Cracked

Typical Repair Scope

Disassembly & Inspection

Your hydraulic cylinder will be disassembled and inspected from end to end. Critical dimensions will be measured and all component condition will be evaluated to bring your cylinder back to peak performance. A complete estimate will be provided for approval prior to commencing any repairs.

Seal Condition

Seals can deteriorate over time and from extreme working conditions. Cylinder cycles, fluid temperature, fluid condition and the condition of cylinder components can all contribute to seal failure. Cylinders do not usually fail from this cause, however this is the usual symptom of the problem. 

Bore Condition

Any deterioration to Surface finish or Dimensional Clearances will cause Internal Oil Leakage & the cylinder may not function at full efficiency. Most cylinder bores are honed to Ra8 to Ra16 Micro finish & a .1mm or .004 inch diameter tolerance. All honing is done in house.

Rod / Stage Condition

Any deterioration of the finish or straightness will cause seal failure & external oil leakage. Damaged cylinder rods and stages can be polished and/or hard chrome plated in house.

Gland / Piston Condition

Glands and pistons can deteriorate over time, especially in harsh working conditions. Glands and pistons can be modified for improved sealing performance or replaced to ensure correct clearance and maximize cylinder operation.

Mounting Connection

Cylinders usually require mounting. Some styles incorporate threads, pins, trunions, tabs, bolts, bearings or bushings as an example to attach the cylinder to the mechanism that they are operating. Failure of any of these devices can stop operation of the cylinder.

Porting Connection

All cylinders require flanges, couplings, & fittings as a method of receiving oil flow from the control system. Failure of these items will cause failure of the component.

Assembly and Testing

Once the component repairs are complete, the cylinder is re-assembled and tested as per customer requirements. Upon successful testing, the cylinders can be primed or painted to customer specs then packaged for shipping.

Typical Repair Scope

Your hydraulic cylinder will be disassembled and inspected from end to end. Critical dimensions will be measured and all component condition will be evaluated to bring your cylinder back to peak performance. A complete estimate will be provided for approval prior to commencing any repairs.

Seals can deteriorate over time and from extreme working conditions. Cylinder cycles, fluid temperature, fluid condition and the condition of cylinder components can all contribute to seal failure. Cylinders do not usually fail from this cause, however this is the usual symptom of the problem. 

Any deterioration to Surface finish or Dimensional Clearances will cause Internal Oil Leakage & the cylinder may not function at full efficiency. Most cylinder bores are honed to Ra8 to Ra16 Micro finish & a .1mm or .004 inch diameter tolerance. All honing is done in house.

Any deterioration of the finish or straightness will cause seal failure & external oil leakage. Damaged cylinder rods and stages can be polished and/or hard chrome plated in house.

Glands and pistons can deteriorate over time, especially in harsh working conditions. Glands and pistons can be modified for improved sealing performance or replaced to ensure correct clearance and maximize cylinder operation.

Cylinders usually require mounting. Some styles incorporate threads, pins, trunions, tabs, bolts, bearings or bushings as an example to attach the cylinder to the mechanism that they are operating. Failure of any of these devices can stop operation of the cylinder.

All cylinders require flanges, couplings, & fittings as a method of receiving oil flow from the control system. Failure of these items will cause failure of the component.

Once the component repairs are complete, the cylinder is re-assembled and tested as per customer requirements. Upon successful testing, the cylinders can be primed or painted to customer specs then packaged for shipping.

Cracked Cylinder Barrel? No Problem

We'll get you back to work Lickety Split!

Before

After

Cracked Cylinder Barrel? No Problem

We'll get you back to work Lickety Split!

Hydraulic Cylinder Repair Retube Cracked barrel tube

Repair Applications

RHK serves many industries such as these:

  • Drilling & Service Rigs
  • Construction
  • Heavy Equipment
  • Mining
  • Equipment Rental
  • Paving
  • Waste Management
  • Cranes & Lifting
  • Landscaping
  • Gravel Pits
  • Utilities
  • Forestry
  • Agriculture