BELPARTS MACHINERY LIMITED
| Part number | 129-7828 1297828 |
| Warranty | 1 Year |
| Application | Excavator |
| Condition | New |
| Emission standards | Stage V |
| Quality | Aftermarket High Quality |
| Delivery Time | 3-7 Day |
| Supply Ability | 100 PCS / Months |
| Part name | Hydraulic Boom Cylinder |
| Packaging Details | Wooden Case Packing |
| Shipment | DHL FEDEX TNT EMS UPS / Ses / Air |
| Model | 345BL |
| Payment Terms | L/C,D/A,D/P,T/T,TRADE ASSURANCE,WEST UNION,PAYPAL |
| Certification | CE |
| Model Number | 345BL |
| Brand Name | Belparts |
| Place of Origin | China |
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Product Specification
| Part number | 129-7828 1297828 | Warranty | 1 Year |
| Application | Excavator | Condition | New |
| Emission standards | Stage V | Quality | Aftermarket High Quality |
| Delivery Time | 3-7 Day | Supply Ability | 100 PCS / Months |
| Part name | Hydraulic Boom Cylinder | Packaging Details | Wooden Case Packing |
| Shipment | DHL FEDEX TNT EMS UPS / Ses / Air | Model | 345BL |
| Payment Terms | L/C,D/A,D/P,T/T,TRADE ASSURANCE,WEST UNION,PAYPAL | Certification | CE |
| Model Number | 345BL | Brand Name | Belparts |
| Place of Origin | China | ||
| High Light | 345BL hydraulic boom cylinder ，excavator spare parts cylinder ，aftermarket hydraulic cylinder assy | ||
This reliable aftermarket hydraulic boom cylinder is designed as a direct replacement part for Komatsu 345BL excavators. As a key hydraulic component of the working assembly, it controls the upward and downward movement of the boom, delivering stable performance for general construction, road renovation, quarry operations and large-scale earthmoving tasks. Every product is manufactured in strict compliance with original OEM standards, featuring identical mounting sizes, pin pitch and hydraulic port layout. Users can finish direct bolt-on installation on site without cutting, welding or any extra modifications.
| Item | Specification |
|---|---|
| Product Name | Hydraulic Boom Cylinder |
| Applicable Model | 345BL |
| OEM Part Number | 129-7828, 1297828 |
| Product Grade | Brand New High-Quality Aftermarket |
| Warranty | 12 months against manufacturing defects |
| MOQ | 1 unit, in stock for immediate shipment |
| QC Standard | ISO9001 certified, full hydraulic pressure and cyclic tests conducted before delivery |
| # | Part No. | Description | Qty |
|---|---|---|---|
| All | 1297828 | CYLINDER & SEAL GROUP-BOOM; (BOOM) | 1 |
| 1 | 3B8489 | FITTING-GREASE; (FAN AND ALTERNATOR DRIVE) | 1 |
| 2 | 9X4598 | SEAL; (OD=130.18mm) | 4 |
| 3 | 2590755 | CYLINDER GROUP-BOOM | 1 |
| 4 | 8T6757 | PLUG; (PIPE) (1/8-27 NPTF THD) | 1 |
| ---- | SEPARATE ILLUSTRATION |
| Spec Item | Data |
|---|---|
| Bore Diameter | 130mm |
| Piston Rod Diameter | 90mm |
| Working Stroke | 1480mm |
| 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 process |
| Piston Rod | 40CrMo heat-treated steel, 28~32μm hard chrome plating, HRC68~72 with excellent wear and anti-deformation capacity |
| Matching Seal Kit PN | 129-7828K |
| Working Temperature | -25℃ ~ +85℃ |
| Structure | Double ear lugs equipped with quenched copper wear bushings, built-in buffer structure to absorb operational impact |
Our factory has devoted itself to producing hydraulic cylinders for Komatsu medium and heavy excavators for over ten years. We supply a complete range of boom, arm and bucket cylinders for 345 series and other mainstream models. All products follow strict quality control systems and are widely exported to aftermarket markets in Africa, Southeast Asia and the Middle East, winning favorable feedback from global clients.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2013
Total Annual:
$28000000-$41660000
Employee Number:
1200~1300
Ecer Certification：
Verified Supplier
Since 2013 Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013 Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts Who We Are Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha... Since 2013 Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013 Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts Who We Are Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha...
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