How Often Should Rotary Drilling Rig Hydraulic Systems Be Serviced? Which Parts Require Close Inspection?

FAQ

Q1: What is the typical service interval for rotary drilling rig hydraulic systems?
It’s recommended to perform routine maintenance every 500 hours, including oil and filter checks. A more thorough inspection—checking pump performance, valve response, and system sealing—should be done every 1000 hours. For machines operating in harsh environments (e.g. dust, heat, long cycles), intervals should be shortened accordingly.

Q2: Which hydraulic components require special attention during maintenance?
The following parts are crucial:

• Main Hydraulic Pump (e.g. Rexroth A8VO160): Look for pressure fluctuation, abnormal noise, or leakage.

• Control Valves: Ensure smooth switching and no sluggish behavior.

• Hydraulic Oil Filters: Replace aged filters to prevent system contamination.

• Return & Suction Filters: Keep the system clean by trapping debris before it reaches critical components.

• Pipes and Fittings: Check for wear, looseness, and signs of oil seepage.

Q3: What risks arise from neglecting regular maintenance?

• Pressure instability or total hydraulic failure

• Severe wear of main pump, resulting in high repair costs

• Malfunctioning valve systems causing operational failure

• Contaminants damaging multiple components, potentially causing total equipment shutdown

Q4: Should OEM parts be used for replacement?
Yes, either OEM or high-precision compatible parts should be used. These ensure proper sealing and performance. Using poor-quality components can accelerate wear, cause sealing failures, and damage the main pump prematurely.