Slewing power loss and internal friction cause jerky rotation and costly downtime for HX520L fleets. Low-grade pistons wear quickly under high-pressure cycles, leading to total swing motor failure. The 39Q6-11220-DM ensures a precision fit. This high-strength piston restores smooth rotation and hydraulic efficiency.
Item NO.:
39Q6-11220Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time:
2-3 DAYSProtect your bottom line from the high cost of hydraulic failure. The 39Q6-11220-DM eliminates the risks of unverified components in high-impact mining. Precision-engineered for the HX520L, this vacuum-hardened piston delivers OEM-grade reliability, ensuring your fleet stays active and your maintenance costs stay low.

| Part Number | 39Q6-11220-DM |
|---|---|
| Part Name | Swing Motor Piston |
| Compatible Brand | Tongmyung |
| Applicable Models | Hyundai HX520L |
| Application | Excavator hydraulic system |
| Material | High‑strength Alloy Steel |
| Product Color | Steel Grey |
| Working Temperature | -25°C to 110°C |
| Key Function | Converting hydraulic pressure into mechanical torque for motor rotation |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |

Forged from premium alloy steel with vacuum heat treatment to resist deformation and surface fatigue under intense hydraulic pressure cycles.

Each 39Q6-11220-DM piston is micro-polished to micron-level tolerances, ensuring a low-friction interface and preventing internal oil bypass.

Specifically engineered as a drop-in replacement for Hyundai HX520L swing motors, eliminating the need for modifications and reducing installation time.


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