Machine operators running Komatsu PC100-6 excavators consistently report compromised rotary control, erratic swing reaction, and gradual hydraulic power deterioration during sustained high-load operations. The 21W-26-00100 swing drive unit is purposefully designed to correct these critical deficiencies, reinstating dependable slewing dynamics and minimizing unscheduled repair stoppages.
Item NO.:
21W-26-00100Order(MOQ):
1Payment:
T/T,WESTERN UNION,CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In StockEngineered as a direct-fit OEM-quality replacement, the 21W-26-00100 delivers stable high-torque swing output, reduced internal bypass leakage, and extended maintenance intervals - enabling distributors, repair workshops, and fleet buyers to minimize machine downtime while securing reliable aftermarket supply margins.
| Part Number | 21W-26-00100 |
|---|---|
| Part Name | PC100-6 Excavator Swing Gearbox Assembly |
| Compatible Brand | KOMATSU |
| Applicable Models | PC100-6, PC100, PC120 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 PC100-6, PC100, PC120 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 21W-26-00100 specifications for KOMATSU PC100-6 series excavator hydraulic swing systems.
FAQ
What performance issues indicate my PC100-6 excavator swing motor may need replacement?
Common red flags include inconsistent or delayed swing response, the upper carriage creeping after the control lever is neutralized, metallic grinding or vibration from the swing housing, hydraulic fluid weeping past shaft seals, and a noticeable drop in rotary torque under excavation load.
What inspections should be completed before mounting a new 21W-26-00100?
Verify hydraulic oil cleanliness to at least ISO 4406 18/16/13 grade, confirm system relief pressure matches Komatsu factory specifications, inspect the mounting surface for flatness and ensure all bolt holes are clean and undamaged, and perform a thorough hydraulic circuit flush.
Q: Is this 21W-26-00100 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 21W-26-00100 fits my excavator model?
A: Cross-check your existing part number against 21W-26-00100. This assembly fits PC100-6, PC100, PC120 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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