GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED
| Quality | Aftermarket High Quality |
| Part number | 22U-63-02623 |
| Model | PC228USLC-3 PC228US-3 |
| Delivery Time | 3-7 Day |
| Condition | New |
| Emission standards | Stage V |
| Payment Terms | L/C,D/A,D/P,T/T,TRADE ASSURANCE,WEST UNION,PAYPAL |
| Warranty | 1 Year |
| Part name | Hydraulic Arm Cylinder |
| Supply Ability | 100 PCS / Months |
| Shipment | DHL FEDEX TNT EMS UPS / Ses / Air |
| Application | Excavator |
| Packaging Details | Wooden Case Packing |
| Model Number | PC228USLC-3 PC228US-3 |
| Brand Name | Belparts |
| Certification | CE |
| Place of Origin | China |
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Product Specification
| Quality | Aftermarket High Quality | Part number | 22U-63-02623 |
| Model | PC228USLC-3 PC228US-3 | Delivery Time | 3-7 Day |
| Condition | New | Emission standards | Stage V |
| Payment Terms | L/C,D/A,D/P,T/T,TRADE ASSURANCE,WEST UNION,PAYPAL | Warranty | 1 Year |
| Part name | Hydraulic Arm Cylinder | Supply Ability | 100 PCS / Months |
| Shipment | DHL FEDEX TNT EMS UPS / Ses / Air | Application | Excavator |
| Packaging Details | Wooden Case Packing | Model Number | PC228USLC-3 PC228US-3 |
| Brand Name | Belparts | Certification | CE |
| Place of Origin | China |
This heavy-duty aftermarket hydraulic stick cylinder is precision manufactured as a direct OEM replacement for Komatsu PC228US-3 standard short-tail excavator and PC228USLC-3 long-track zero-swing excavator. As the core hydraulic driving component of front working equipment, it controls arm extension and retraction to complete excavation, rock grabbing, material loading and site leveling tasks. It is widely used in urban narrow-site construction, municipal renovation, pipeline laying and medium-sized quarry earthmoving projects.
All cylinders are strictly produced in accordance with Komatsu original technical drawings and OEM standards, with fully consistent mounting dimensions, pin hole spacing and hydraulic port layout. Direct bolt-on installation without cutting, welding or any on-site secondary modification.
| Item | Specification |
|---|---|
| Product Name | Hydraulic Arm (Stick) Cylinder |
| Applicable Model | Komatsu PC228US-3, PC228USLC-3 Zero Tail Excavator |
| OEM Part Number | 22U-63-02623 |
| Product Grade | Brand New High-Quality Aftermarket |
| Warranty | 12 months against manufacturing defects |
| MOQ | 1 unit, sufficient stock for immediate shipment |
| QC Standard | ISO9001 certified, full hydraulic pressure & cyclic fatigue testing before delivery |
| # | Part No. | Description | Qty |
|---|---|---|---|
| G-1 | (22U-63-X9320) | CYLINDER GROUP,(NATURAL YELLOW) | 1 |
| ---- | ==================== | ||
| 1 | 22U-63-02623 | CYLINDER ASS'Y | 1 |
| 1 | 22U-63-62742 | Cylinder | 1 |
| 2 | 20Y-70-21360 | Bushing | 2 |
| 3 | 07145-00080 | SEAL,DUST (KIT) | 4 |
| 4 | 22U-63-62721 | ROD,PISTON | 1 |
| 5 | 707-27-13961 | HEAD,CYLINDER | 1 |
| 6 | 07179-13109 | RING, SNAP | 1 |
| 7 | 707-56-95510 | SEAL,DUST (KIT) | 1 |
| 8 | 707-52-90720 | Bushing | 1 |
| 9 | 707-51-95030 | PACKING,ROD (KIT) | 1 |
| 10 | 07000-15125 | O-RING, TRANSFER GEAR | 1 |
| 11 | 707-35-91370 | RING,BACK-UP (KIT) | 1 |
| 12 | 707-51-95640 | RING,BUFFER (KIT) | 1 |
| 13 | 01010-81875 | BOLT (KIT) | 12 |
| 14 | 707-41-11840 | Washer | 12 |
| 15 | 707-36-13731 | Piston | 1 |
| 16 | 707-44-13280 | RING,PISTON (KIT) | 1 |
| 17 | 707-39-13510 | RING,WEAR (KIT) | 2 |
| 18 | 707-44-13920 | Ring | 2 |
| 19 | 707-71-61040 | PLUNGER | 1 |
| 20 | 07000-15085 | O-RING,(F5350-63A0 -4 ) | 1 |
| 21 | 707-35-90960 | RING,BACK-UP (KIT) | 2 |
| 22 | 01310-01216 | SCREW,NYLON | 1 |
| 23 | 707-71-70250 | PLUNGER | 1 |
| 24 | 07020-00000 | FITTING, GREASE - UPPER HINGE PIN | 1 |
| 25 | 707-71-32770 | COLLAR | 1 |
| 26 | 707-35-91370 | RING,BACK-UP (KIT) | 2 |
| 27 | 07000-15125 | O-RING, TRANSFER GEAR | 1 |
| 28 | 04260-00635 | BOWL, CHECK VALVE | 12 |
| 29 | 707-71-91270 | Cap | 1 |
| 29A | 707-83-13010 | Valve | 1 |
| 29B | 07750-01628 | Spring | 1 |
| 29C | 707-87-14070 | Plug | 1 |
| 29D | 07002-12034 | O-RING,(FOR WITHOUT BRAKE ASSISTOR) | 1 |
| 30 | 205-63-61171 | Tube | 4 |
| 31 | 20D-62-17860 | Elbow | 1 |
| 32 | 01435-01055 | BOLT, MOUNT DRYER TO BRACKET AND FRAME | 2 |
| 33 | 01435-01040 | BOLT,(SHIM 3-PIECE) | 2 |
| 34 | 07000-13030 | O-RING,BOOM (FOR 50 FEET LONG FRONT) | 1 |
| 35 | 01010-81080 | BOLT,(WITH CORROSION RESISTOR) | 4 |
| 36 | 01643-31032 | WASHER,(WITH AUTO EMERGENCY STEERING) | 4 |
| 37 | 07000-13035 | O-RING, UPPER COOLER INLET AND OUTLET PORTS | 1 |
| 38 | 22U-63-62791 | Bracket | 1 |
| 39 | 707-88-21260 | BAND | 1 |
| 40 | 01010-81035 | BOLT,(F4320-52A0 -5 ) | 2 |
| 41 | 01643-51032 | WASHER, (WITHOUT EMERGENCY STEERING) | 2 |
| 42 | 707-88-11560 | Plate | 1 |
| 43 | 07283-22738 | CLIP, SEAT | 2 |
| 44 | 01599-01011 | NUT,(WITH UNDER MIRROR) | 4 |
| 45 | 01643-31032 | WASHER,(WITH AUTO EMERGENCY STEERING) | 4 |
| ---- | ==================== | ||
| 46 | 707-99-57180 | SERVICE KIT | 1 |
| Spec Item | Data |
|---|---|
| Bore Diameter | 128mm |
| Piston Rod Diameter | 84mm |
| Working Stroke | 1380mm |
| Rated Working Pressure | 31.4MPa |
| Factory Test Pressure | 47.1MPa (1.5 times 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, excellent wear resistance & anti-bending performance |
| Matching Seal Kit PN | 22U-63-02623K |
| Working Temperature | -25℃ ~ +85℃ |
| Structure Feature | Double reinforced ear lugs with quenched copper wear bushings, built-in buffer device to weaken reciprocating impact and vibration noise during frequent narrow-space operation |
One cylinder fits both standard-track PC228US-3 and long-track PC228USLC-3 short-swing excavators. All assembly sizes, lug spacing and oil port positions fully match original PN 22U-63-02623 cylinder, seamlessly connecting arm linkages and hydraulic pipelines to ensure stable continuous medium-heavy load operation in compact construction environments.
Thickened cylinder tube and integrated lug plates are optimized for frequent narrow-site construction. It effectively resists long-term cyclic dynamic loads and accidental collisions with walls or stones, greatly extending service life.
Each finished cylinder undergoes repeated full-stroke reciprocating cycle test and high-pressure airtight leak detection, completely eliminating hidden internal and external oil leakage faults.
It achieves the same stability, strength and service lifespan as genuine Komatsu OEM spare parts, effectively reducing repeated procurement costs for repair shops, urban construction equipment rental fleets and global spare parts wholesalers.
In-stock items can be dispatched within 3 working days. Air freight supports emergency breakdown rush orders; sea freight provides low-cost bulk wholesale shipping solutions for Africa, Southeast Asia and Middle Eastern construction markets.
Our factory has more than 10 years of mature experience in R&D and mass production of hydraulic cylinders for Komatsu US series zero-tail excavators including PC228US-3 / PC228USLC-3. We supply complete boom, arm and bucket cylinder assemblies with mature forging, precision honing and professional heat treatment craftsmanship, supported by full-process strict quality control. Our aftermarket hydraulic cylinders are exported worldwide all year round, winning long-term trust and consistent positive feedback from global machinery spare parts dealers.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2013
Total Annual:
900000-3000000
Employee Number:
50~93
Ecer Certification：
Verified Supplier
GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED founded in September 2013, loed in the engineering machinery market in Guangzhou, China. At present , we have one shop, one warehouse and one office as well as a professional team for purchasing, selling, packing, shipping and after-sale service.... GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED founded in September 2013, loed in the engineering machinery market in Guangzhou, China. At present , we have one shop, one warehouse and one office as well as a professional team for purchasing, selling, packing, shipping and after-sale service....
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