PC228USLC-2 PC228US-2 Hydraulic Bucket Cylinder for Komatsu Excavator Spare Parts 205-63-03131 Aftermarket High Quality
More Branded Accessories are Available
| Hydraulic Parts | Hydraulic Pump | Final Drive | Travel Reduction |
| Swing Motor | Swing Reduction | Control Valve | Gear Parts |
| Slew Bearing | Engine Assembly | Hydraulic Cylinder | ECU |
Komatsu PC228USLC-2 / PC228US-2 Hydraulic Bucket Cylinder | PN:205-63-03131 | Premium Aftermarket Replacement
1. Basic Product Info
Crafted as a reliable aftermarket component, this hydraulic bucket cylinder is tailor-made for Komatsu PC228USLC-2 and PC228US-2 compact radius excavators. It drives the bucket to finish digging, scooping and unloading tasks, ideal for narrow job sites, urban construction and municipal engineering. All products are fabricated according to original OEM specifications, retaining standard mounting sizes, pin gaps and oil port positions. Users can complete direct installation on site without cutting, welding or extra adjustments.
| Item | Specification |
|---|---|
| Product Name | Hydraulic Bucket Cylinder |
| Applicable Model | Komatsu PC228USLC-2, PC228US-2 |
| OEM Part Number | 205-63-03131 |
| Product Grade | Brand New High-Quality Aftermarket |
| Warranty | 12 months against manufacturing defects |
| MOQ | 1 unit, sufficient stock for immediate delivery |
| QC Standard | ISO9001 certified, full hydraulic pressure and cyclic tests before shipment |
2. Core Technical Parameters
| # | Part No. | Description | Qty |
|---|---|---|---|
| G-1 | (205-63-X9040) | CYLINDER GROUP,(SEE FIG.Y1620-41A0C) | 1 |
| G-1 | (205-63-X3131) | BUCKET CYLINDER G.,(SEE FIG.Y1620-41A0B) | 1 |
| ---- | ==================== | ||
| 1 | 205-63-03131 | CYLINDER ASS'Y | 1 |
| 1 | 205-63-71141 | Cylinder | 1 |
| 2 | 707-76-70110 | Bushing | 1 |
| 3 | 07145-00070 | SEAL,DUST? PISTON ROD | 2 |
| 4 | 205-63-71121 | ROD,PISTON | 1 |
| 5 | 707-76-70120 | Bushing | 1 |
| 6 | 21K-70-12180 | SEAL,DUST (KIT) | 2 |
| 7 | 707-27-11981 | HEAD,CYLINDER | 1 |
| 8 | 07179-13094 | RING, SNAP | 1 |
| 9 | 195-63-92190 | SEAL,DUST (KIT) | 1 |
| 10 | 707-52-90560 | Bushing | 1 |
| 11 | 707-51-80030 | PACKING,ROD (KIT) | 1 |
| 12 | 07000-15105 | O-RING (KIT) | 1 |
| 13 | 707-35-91150 | RING,BACK-UP (KIT) | 1 |
| 14 | 707-51-80630 | RING,BUFFER (KIT) | 1 |
| 15 | 01010-81670 | BOLT,(WITH WEAR GUARD) | 12 |
| 16 | 01643-51645 | WASHER, SPRING | 12 |
| 17 | 707-36-11661 | Piston | 1 |
| 18 | 707-44-11280 | RING,(Y1620-01A1-19) | 1 |
| 19 | 707-39-11510 | RING,(Y1620-01A1-20) | 2 |
| 20 | 707-44-11920 | Ring | 2 |
| 21 | 707-35-90360 | RING,BACK-UP (KIT) | 2 |
| 22 | 07000-15070 | O-RING (KIT) | 1 |
| 23 | 01310-01216 | SCREW,NYLON | 1 |
| 24 | 07020-00000 | FITTING, GREASE - UPPER HINGE PIN | 1 |
| 25 | 07020-00900 | FITTING, GREASE (STEERING CYLINDER) | 1 |
| 26 | 205-63-71171 | Tube | 1 |
| 27 | 01435-01055 | BOLT, MOUNT DRYER TO BRACKET AND FRAME | 2 |
| 28 | 01435-01040 | BOLT,(SHIM 3-PIECE) | 2 |
| 29 | 07000-13030 | O-RING,BOOM (FOR 50 FEET LONG FRONT) | 1 |
| 30 | 707-88-95370 | Bracket | 2 |
| 31 | 707-88-95350 | BAND | 2 |
| 32 | 01010-81035 | BOLT,(F4320-52A0 -5 ) | 4 |
| 33 | 01643-51032 | WASHER, (WITHOUT EMERGENCY STEERING) | 4 |
| 34 | 07282-02793 | Clamp | 2 |
| 35 | 01010-81020 | BOLT,(FOR MONO LEVER STEERING) | 4 |
| 36 | 01643-31032 | WASHER,(WITH AUTO EMERGENCY STEERING) | 4 |
| ---- | ==================== | ||
| 37 | 707-98-45250 | CYLINDER KIT,BUCKET (FOR 2.4M AND 2.9M ARM) | 1 |
| Spec Item | Data |
|---|---|
| Bore Diameter | 115mm |
| Piston Rod Diameter | 80mm |
| Working Stroke | 1120mm |
| Rated Working Pressure | 31.4MPa |
| Factory Test Pressure | 47.1MPa (1.5 times the rated working pressure) |
| Barrel Material | High-tensile seamless alloy steel with precision inner honing |
| Piston Rod | 40CrMo heat-treated steel, 28~32μm hard chrome plating, HRC68~72 for superior wear and anti-deformation performance |
| Matching Seal Kit PN | 205-63-03131K |
| Working Temperature | -25℃ ~ +85℃ |
| Structure | Double ear lugs with quenched copper wear bushings, built-in buffer device to relieve operating impact |
3. Product Advantages
- Precise OEM Matching: Fully consistent with the original part in overall structure and dimensions, connecting smoothly with bucket linkages and hydraulic pipelines for stable operation.
- Compact & Robust Build: Optimized structure suits compact excavator working conditions, reinforced lugs and cylinder body resist daily loads and accidental impacts.
- Thorough Quality Inspection: Each cylinder undergoes full-stroke cycling test and high-pressure tightness test to prevent internal and external oil leakage effectively.
- Excellent Cost Performance: Matches the durability and performance of genuine parts, helping maintenance shops and wholesalers cut procurement expenses greatly.
- Flexible Shipping Options: In-stock orders can be dispatched within 3 working days. Air freight serves urgent needs, while sea freight is cost-effective for bulk orders.
4. Supplier Brief
We specialize in manufacturing hydraulic cylinders for Komatsu compact and medium excavators for over ten years. We provide complete boom, arm and bucket cylinders for PC228US series and other classic models. Our products are widely exported to aftermarket markets in Africa, Southeast Asia and the Middle East, earning steady praise from global customers.
5. FAQ
Q1: Can this bucket cylinder fit PC228US-1 or PC228US-3?
A: No, different generations adopt exclusive part numbers and dimensions, which are not interchangeable. Please confirm the excavator model before ordering.
Q2: Does the standard package include the seal repair kit?
A: The seal kit is not included in standard products. You can purchase the dedicated repair kit separately and get a discount for combined orders.
Q3: What packaging is used for long-distance sea transportation?
A: Anti-rust oil is filled inside the cylinder, the piston rod is coated with anti-rust grease, then wrapped with waterproof PE film and packed in sturdy export plywood cases.
Q4: Is there a discount for purchasing a full set of working cylinders?
A: Full set orders enjoy tiered preferential prices, and we offer consolidated shipment to reduce total logistics costs.
Q5: What after-sales support is available if oil leakage occurs during the warranty period?
A: Please provide photos of the leakage area and excavator serial number. We will supply free seal replacement and professional remote technical guidance.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.