Operators of Caterpillar E320C excavators frequently encounter declining slew precision and progressive mechanical wear during high-duty-cycle operations. The 148-4644 swing gearbox restores crisp swing control and sustained job-site productivity.
Item NO.:
148-4644Order(MOQ):
1pcsPayment:
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 148-4644 swing gearbox delivers consistent high-torque rotary performance, controls internal wear, and stretches service intervals.
| Part Number | 148-4644 |
|---|---|
| Part Name | E320C E320 E322 Excavator Swing Gearbox Assembly |
| Compatible Brand | CATERPILLAR |
| Applicable Models | E320C, E320, E322 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 E320C, E320, and E322 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 148-4644 specifications for CATERPILLAR E320C series excavator hydraulic swing systems.
FAQ
Q: What are the common symptoms of a failing 148-4644 swing gearbox?
A: The most common indicators are labored or jerky swing movements, the cab drifting after joystick release, loud grinding sounds from the swing drive housing, and steady decline in rotary force.
Q: What should be checked before installing the 148-4644?
A: Verify gearbox oil meets cleanliness classification, confirm system alignment matches Caterpillar specifications, check the mounting surface is true and threaded holes clean, and perform a complete flush.
Q: Is this 148-4644 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.
Q: How to confirm the 148-4644 fits my excavator model?
A: Cross-check your existing part number against 148-4644. This assembly fits E320C, E320, and E322 excavators. 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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