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Komatsu PC150 Hydraulic Boom Cylinder | PN:21P-63-K1601 | Premium Aftermarket Replacement
1. Basic Product Info
High-quality aftermarket boom hydraulic cylinder with OEM part number 21P-63-K1601, dedicated direct replacement for Komatsu PC150, PC150-6 and PC150LC-6 excavators. It controls boom lifting and lowering for earthmoving, site grading and general construction work. Manufactured strictly per original OEM drawings, featuring identical mounting dimensions, pin spacing and oil port layout for plug-and-play installation without on-site machining.
| Item |
Specification |
| Product Name |
Hydraulic Boom Cylinder |
| Applicable Model |
Komatsu PC150, PC150-6, PC150LC-6 |
| OEM Part No. |
21P-63-K1601 |
| Product Grade |
Brand New Premium Aftermarket |
| Warranty |
12 months against manufacturing defects |
| MOQ |
1 unit available from stock |
| QC Standard |
ISO9001 certified, full hydraulic pressure test before delivery |
2. Core Technical Parameters
| Spec Item |
Data |
| Bore Diameter |
125mm |
| Piston Rod Diameter |
80mm |
| Rated Working Pressure |
31.4MPa |
| Factory Test Pressure |
47.1MPa (1.5 times rated working pressure) |
| Barrel Material |
ST52 seamless alloy steel with precision inner honing |
| Piston Rod |
40CrMo tempered steel, 28~32μm hard chrome plating, HRC67~70 wear-resistant |
| Matching Seal Kit PN |
21P-63-K1601K |
| Working Temperature |
-25℃ ~ +85℃ |
| Structure |
Double ear lugs equipped with quenched copper wear bushings and end buffer device |
3. Product Advantages
- Full OEM Interchangeability: Matches all specs of original 21P-63-K1601, perfectly connects with original boom assembly and hydraulic pipelines.
- Reinforced Structure: Thickened lug base effectively resists impact and deformation under regular construction loads.
- Strict Pre-shipment Inspection: Every cylinder undergoes full-stroke cycle test and tightness test to prevent internal and external oil leakage.
- High Cost Performance: Delivers the same performance as genuine parts while cutting 40%~50% procurement costs.
- Flexible Logistics: In-stock goods ship within 3 working days; air freight 3~7 days for urgent orders, sea shipment 30~40 days for bulk orders.
4. Supplier Brief
We have focused on Komatsu 6-series excavator hydraulic cylinders for over 11 years, supplying complete boom, arm and bucket cylinders for PC120-6 to PC160-6 series. Our products are widely exported to Africa, Southeast Asia and Middle East spare parts markets.
5. Unique FAQ
Q1: Can this boom cylinder fit upgraded PC150-7 model?
A: No, PC150-7 adopts different part numbers and installation sizes, which are not interchangeable.
Q2: Does the standard package include a seal repair kit?
A: The cylinder does not come with seals by default. The matching seal kit 21P-63-K1601K is available for separate purchase with a bundle discount.
Q3: What packaging is used for long-distance sea transportation?
A: The cylinder is filled with anti-rust oil internally, the piston rod is coated with anti-rust grease, then wrapped with waterproof film and packed in solid export plywood cases.
Q4: Will there be extra discount if I order boom, arm and bucket cylinders together?
A: Combined full-set orders enjoy tiered unit price discount and consolidated freight to save total logistics cost.
Q5: How to handle oil leakage within the warranty period?
A: Provide clear photos of the leakage area and the excavator serial number, we will offer free replacement seals or remote technical guidance.
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