PC200-8 Hydraulic Arm Cylinder Assy 707-01-XR251 707-01-XR250 for Komatsu Excavator Parts
| Part Name | Excavator Hydraulic Arm Cylinder PC200-8 |
| Model | PC200-8 |
| Part Number | 707-01-XR251 707-01-XR250 |
| Tube | 45Mn Steel |
| Piston Rod | Hard chromium plating |
| Seal Kits | NOK and SKF Imported Oil Seal |
The PC200-8 Arm Cylinder offers smooth and flexible operation, significantly enhancing work efficiency. Built with premium materials, it ensures durability, reliable performance, and long service life for your excavator.
Key Features
| Component/Process | Key Specifications |
| Piston Rod | 1. Overall conditioning 2. High-frequency hardening (hardness ≤55) 3. Hard chrome plating (3 wire) |
| Rod End, Tube End & Cover | 1. Material: Forged steel 2. Process: Automatic welding (flatter welds, no manual) |
| Cylinder Tube | 1. Material: 25Mn steel (matches original manufacturer) 2. Surface: Sandblasting + 2-layer baking paint |
| Oil Seal | 1. Brand: Imported (Japan NOK, US SKF) 2. Oil leakage: ≤1% |
| Assembly | 1. Fully automatic line 2. Less manual intervention (prevents nut dropping) |
| Factory Inspection | 1. Pressure test for each cylinder 2. Ensures no oil leakage |
Hydraulic Cylinder Maintenance Guidelines
Proper maintenance extends the service life of hydraulic cylinders and ensures reliable performance. Key practices include:
Regular Hydraulic Oil Replacement
The cleanliness of hydraulic oil directly affects cylinder lifespan. Scheduled oil changes help maintain system stability and protect internal components.
Cleaning the Piston Rod Surface
The piston rod is prone to impacts and scratches. Regularly remove dirt from the dust seals and exposed rod area to prevent contaminants from entering the cylinder and damaging pistons, bores, or seals.
Lubricating Connection Points
Apply lubrication to joints and connection parts to prevent rust and abnormal wear, ensuring smooth movement even under low-oil conditions.
Checking Hydraulic System Pressure
Use professional tools to periodically test system pressure, keeping it within the safe operating range to avoid overload and premature wear.
Storage Recommendations
If the equipment is out of service for an extended period, store the cylinder in a fully retracted position. This minimizes exposure of the piston rod, preventing rust and surface damage.
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PC200-8 Hydraulic Arm Cylinder Assy 707-01-XR251 707-01-XR250 for Komatsu Excavator Parts Images
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