Komatsu PC300LC-5 PC300-5 Hydraulic Boom Cylinder 207-63-53120 Aftermarket 145mm Bore 1540mm Stroke
Price:
Negotiation
MOQ:
1 PCS
Delivery Time:
3-7 Day
Brand:
Belparts
Product Description
Komatsu PC300LC-5 / PC300-5 Hydraulic Boom Cylinder | PN:207-63-53120 | Premium Aftermarket Replacement
1. Basic Product Info
This heavy-duty aftermarket hydraulic boom cylinder is precision manufactured as a direct OEM interchangeable replacement for Komatsu PC300-5 and PC300LC-5 large excavators. As the core hydraulic power component of front working equipment, it controls boom lifting and lowering to complete heavy excavation, bulk rock loading, large-area ground leveling and open-pit mining tasks. Widely used in stone quarries, open mines, large highway infrastructure and heavy earthmoving projects.
All cylinders are produced strictly 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 Boom Cylinder |
| Applicable Model | Komatsu PC300-5, PC300LC-5 Large Excavator |
| OEM Part Number | 207-63-53120 |
| 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 |
2. Core Technical Parameters
| # | Part No. | Description | Qty |
|---|---|---|---|
| G-1 | (207-63-X2100) | BOOM CYLINDER GROUP,L.H | 1 |
| G-1 | (207-63-X2110) | BOOM CYLINDER GROUP,R.H | 1 |
| ---- | ==================== | ||
| 1 | 207-63-02100 | BOOM CYLINDER ASS'Y | 1 |
| 1 | 207-63-53140 | Cylinder | 1 |
| 2 | 707-76-90180 | Bushing | 1 |
| 3 | 07145-00090 | SEAL,DUST (KIT) | 2 |
| 4 | 07020-00675 | FITTING,GREASE (WITHOUT LUB. PIPING) | 1 |
| 5 | 207-63-53120 | Rod | 1 |
| 6 | 707-76-10130 | Bushing | 1 |
| 7 | 07145-00100 | SEAL,DUST (KIT) | 2 |
| 8 | 707-71-31090 | COLLAR | 1 |
| 9 | 707-71-31081 | COLLAR | 1 |
| 10 | 07001-05135 | RING,BACK-UP (KIT) | 2 |
| 11 | 07000-15135 | O-RING,BACK-UP (KIT) | 1 |
| 12 | 707-71-61020 | PLUNGER | 1 |
| 13 | 707-71-11040 | Ring | 1 |
| 14 | 707-27-14630 | HEAD | 1 |
| 15 | 176-63-56170 | SEAL,DUST (KIT) | 1 |
| 16 | 07179-13114 | RING,SNAP (KIT) | 1 |
| 17 | 707-52-90750 | Bushing | 1 |
| 18 | 707-51-10030 | PACKING,ROD (KIT) | 1 |
| 19 | 707-51-10630 | RING,BUFFER (KIT) | 1 |
| 20 | 07001-05135 | RING,BACK-UP (KIT) | 1 |
| 21 | 07000-15135 | O-RING,BACK-UP (KIT) | 1 |
| 22 | 01010-81875 | BOLT (KIT) | 12 |
| 23 | 707-41-11840 | Washer | 12 |
| 24 | 707-36-14340 | Piston | 1 |
| 25 | 707-40-14870 | Spacer | 2 |
| 26 | 01252-31250 | Bolt | 6 |
| 27 | 707-44-14180 | RING,PISTON (KIT) | 1 |
| 28 | 707-39-14820 | RING,WEAR (KIT) | 2 |
| 29 | 707-44-14910 | Ring | 2 |
| 30 | 707-35-52920 | RING,BACK-UP (KIT) | 2 |
| 31 | 07000-12080 | O-RING (KIT) | 1 |
| 32 | 207-63-53171 | TUBE,L.H | 1 |
| 32 | 207-63-53271 | TUBE,R.H | 1 |
| 33 | 207-63-53181 | TUBE,L.H | 1 |
| 33 | 207-63-53281 | TUBE,R.H | 1 |
| 34 | 01010-51060 | BOLT, MOUNT TUBE TO SWITCH PUMP | 8 |
| 35 | 01643-51032 | WASHER, (WITHOUT EMERGENCY STEERING) | 8 |
| 36 | 07000-13035 | O-RING, UPPER COOLER INLET AND OUTLET PORTS | 2 |
| 37 | 707-88-95731 | Bracket | 1 |
| 38 | 707-88-95720 | BAND | 1 |
| 39 | 01010-51240 | BOLT,(WITH SERVICE VALVE R.H.) | 4 |
| 40 | 01643-51232 | WASHER, (WITHOUT EMERGENCY STEERING) | 4 |
| 41 | 07283-23442 | CLIP,(WITH UNDER MIRROR) | 1 |
| 42 | 01643-31032 | WASHER,(WITH AUTO EMERGENCY STEERING) | 2 |
| 43 | 01599-01011 | NUT,(WITH UNDER MIRROR) | 2 |
| 44 | 01010-51025 | BOLT,(FOR CANVAS CANOPY?HEAD GUARD) | 2 |
| 45 | 01643-31032 | WASHER,(WITH AUTO EMERGENCY STEERING) | 2 |
| ---- | ==================== |
| Spec Item | Data |
|---|---|
| Bore Diameter | 145mm |
| Piston Rod Diameter | 94mm |
| Working Stroke | 1540mm |
| 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 | 207-63-53120K |
| Working Temperature | -25℃ ~ +85℃ |
| Structure Feature | Double heavy-duty ear lugs with quenched copper wear bushings, built-in buffer device to reduce strong impact during reciprocating movement |
3. Product Advantages
- 100% OEM Exact Fitment for Two Machine Models
Perfectly compatible with both PC300-5 and PC300LC-5 long-track version. All assembly sizes, lug spacing and oil port positions fully match original PN 207-63-53120 cylinder, seamlessly connecting boom linkages and hydraulic pipelines for stable long-hour heavy-load mining operation.
- Mine-Grade Reinforced Heavy-Duty Structure
Thickened cylinder tube and reinforced joint lugs are specially optimized for harsh mine and quarry environments, resisting long-term cyclic heavy loads, rock collision impacts and abrasion to greatly extend service life.
- Multi-Round Strict Pre-Delivery Inspection
Each finished cylinder undergoes repeated full-stroke reciprocating cycle test and high-pressure airtight leak detection, completely eliminating hidden internal and external oil leakage hazards.
- Outstanding Cost Performance
Delivers identical stability, strength and service lifespan as genuine Komatsu OEM spare parts, effectively cutting recurring procurement costs for mining repair shops, machinery rental fleets and global spare parts wholesalers.
- Flexible Global Logistics Support
In-stock items can be dispatched within 3 working days. Air freight supports urgent breakdown rush orders; sea freight provides cost-saving bulk wholesale shipping for Africa, Southeast Asia, Middle East and Latin American mining markets.
4. Supplier Brief
Our factory has over 10 years of professional experience in R&D and mass production of hydraulic cylinders for classic Komatsu large PC series excavators including PC300-5/PC300LC-5. We supply complete boom, arm and bucket cylinder assemblies with mature forging, honing and heat treatment craft, plus 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.
5. FAQ
Q1: Can this boom cylinder fit Komatsu PC300-6 or PC350-5 excavators?
A: No. Each Komatsu excavator generation uses exclusive part numbers and unique structural dimensions without interchangeability. Please confirm your complete machine model before ordering.
Q2: Does the standard package include the matching seal repair kit?
A: Seal repair kit is not included in standard delivery. You can purchase the dedicated supporting seal kit separately, and we will offer a competitive combined order quotation.
Q3: How is the cylinder packed for long-distance ocean transportation?
A: Anti-rust oil filled into cylinder inner cavity, anti-rust grease evenly coated on piston rod surface. The whole cylinder wrapped with thick waterproof PE film and packed in reinforced thick export plywood cases to prevent collision, scratch and moisture damage during long sea transit.
Q4: Are there tiered volume discounts for purchasing a full set of boom + arm + bucket cylinders for PC300-5 series?
A: Yes. Complete working device cylinder set orders enjoy graded volume discounts. Consolidated FCL container shipment service is available to reduce total logistics expenditure.
Q5: What after-sales technical support if oil leakage occurs within the 12-month warranty period?
A: Please provide clear photos of leakage position plus your excavator serial number. We will arrange free seal replacement and professional remote troubleshooting guidance promptly.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED
Location
429-432,No.268 Zhongshan Avenue East,Huangpu District,Guangzhou
Contact Person
Ron