Heavy construction crews operating Komatsu PC120-6 excavators frequently encounter deteriorating upper-structure rotation accuracy, unpredictable swing movement response, and gradual hydraulic performance drop-off over extended shift cycles. The 203-26-00150 swing motor assembly brings back sharp slewing behavior and sustained output on heavy-duty job sites.
Item NO.:
203-26-00150Order(MOQ):
1Payment:
T/T,WESTERN UNION,CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In StockManufactured to OEM-grade build quality for direct bolt-on replacement, the 203-26-00150 delivers consistent high-torque rotary performance, controls internal hydraulic bypass, and stretches service intervals - helping international distributors, independent repair centers, and heavy equipment fleet operations minimize costly machine downtime.
| Part Number | 203-26-00150 |
|---|---|
| Part Name | PC120-6 Excavator Swing Gearbox Assembly |
| Compatible Brand | KOMATSU |
| Applicable Models | PC120-6, PC120, PC130 Excavator |
| Application | Excavator upper structure slewing hydraulic drive system |
| Material | High-strength forged alloy steel housing |
| Product Color | Matte industrial gray with anti-rust coating |
| Working Temperature | -25°C~+60°C |
| Key Function | Converts high-pressure hydraulic fluid into controlled rotary torque |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Provides powerful and stable rotary force for PC120-6, PC120, PC130 excavator upper structure rotation and swing operations.
Converts hydraulic pressure into controlled rotary movement for smooth and precise swing operation.
Provides stable speed reduction, increased torque output, and efficient power transmission under heavy-duty excavation conditions.
Matches 203-26-00150 specifications for KOMATSU PC120-6 series excavator hydraulic swing systems.
FAQ
What telltale signs suggest my Komatsu PC120-6 swing drive is nearing failure?
Watch for labored or erratic swing movement, the excavator cab continuing to rotate after joystick release, harsh grinding or knocking originating from the rotary drive casing, oil mist escaping around shaft seals, and gradual torque fade during loaded rotation.
What preparation work is essential before fitting a replacement 203-26-00150 unit?
Ensure hydraulic fluid cleanliness meets or exceeds ISO 4406 18/16/13 standards, verify main relief pressure corresponds to Komatsu factory parameters, check the mounting face for flatness and clean all threaded ports, and execute a full hydraulic circuit flush.
Q: Is this 203-26-00150 a genuine OEM or aftermarket part?
A: This is a 100% new aftermarket assembly manufactured to OEM specifications. RITO HYDRAULIC is a listed supplier to major Chinese excavator OEMs and Fortune 500 companies, ensuring consistent quality, precise fitment, and reliable after-sales support.
Q: How to confirm the 203-26-00150 fits my excavator model?
A: Cross-check your existing part number against 203-26-00150. This assembly fits PC120-6, PC120, PC130 excavators. Verify the mounting bolt pattern, hydraulic port positions, and output shaft dimensions match your machine. Contact our technical team with your serial number for compatibility confirmation.
Q: What quality options are available?
A: We provide original, OEM and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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