Common causes of oil leakage in shot blasting equipment, along with their corresponding remedies, are as follows:

**Aged or Damaged Seals** (e.g., oil seals, O-rings, gaskets): ｒｅｐｌａｃｅ with oil-resistant seals of the same model; a small amount of sealant may be applied during installation to aid the sealing process.

**Loose Connection Bolts/Joints or Improperly Sealed Mating Surfaces:** After shutting down the machine, use a torque wrench to tighten the fasteners according to specifications. If threads or tapered surfaces are damaged, they must be repaired or lapped (e.g., using fine valve grinding compound mixed with machine oil).

**Wear Between Shaft and Bore Leading to Leakage at Rotating Parts** (commonly seen in reducers and shot blaster shafts): The shaft body can be machined to add a sealing ring groove, followed by the installation of a new oil seal. In cases of severe eccentricity, the shaft component must be corrected or replaced.

**Damaged or Corroded Oil Lines/Oil Tanks:** For minor cracks, a temporary emergency repair can be performed using metal repair adhesive; however, for a long-term solution, pressure-resistant hoses must be replaced, or the oil tank must be welded/replaced.

**Excessively High Oil Levels or Abnormal System Pressure** (e.g., hydraulic relief valve malfunction): Drain the oil until it reaches the designated level mark. Inspect and calibrate the pressure system; contact the equipment manufacturer if necessary.

**Use of Non-Standard or Mixed Oils Causing Seal Swelling and Failure:** Use only the specific grades of hydraulic oil or lubricant designated for the equipment. Perform regular oil changes and clean/ｒｅｐｌａｃｅ filter elements.

**Troubleshooting Steps:** First, shut down the machine and cut off the power supply. Clean away oil residue to pinpoint the exact location of the leak. Systematically troubleshoot and address the issue based on the corresponding causes listed above. Perform a test run and observe for leaks. If leakage persists, it is recommended to contact the equipment manufacturer or professional maintenance personnel. **Preventive Measures:** It is recommended to inspect seals and fasteners every 500 operating hours, ｒｅｐｌａｃｅ hydraulic oil filter elements every six months, and periodically check the dynamic balance of the shot blaster to minimize vibration-induced loosening.