Construction equipment maintenance crews handling Caterpillar excavator operations routinely encounter gradual rotary drive gearbox wear leading to reduced swing torque and diminished positional accuracy during sustained digging cycles. The E304C swing gearbox unit is engineered to directly counteract this mechanical degradation, reinstating dependable slewing power and extending machine service life on demanding job sites.
Item NO.:
E304COrder(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 E304C swing gearbox delivers consistent high-torque rotary performance, controls internal wear, and stretches service intervals - helping international distributors and heavy equipment fleet operations minimize costly machine downtime while expanding their competitive parts catalog.
| Part Number | E304C |
|---|---|
| Part Name | E304C Excavator Swing Gearbox Rotary Reduction Assembly |
| Compatible Brand | CATERPILLAR |
| Applicable Models | E304C 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 E304C Excavator 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 E304C specifications for CATERPILLAR E304C series excavator hydraulic swing systems.
FAQ
Q: What are the common symptoms of a failing E304C swing assembly?
A: Noticeable warning signs comprise unsteady or delayed swing operation, the upper carriage drifting after control lever centering, harsh metallic grinding emanating from the slewing drive, and gradual loss of rotary force during loaded swings.
Q: What should be checked before installing the E304C?
A: Verify gearbox oil cleanliness, confirm system alignment matches Caterpillar E304C factory specifications, inspect the mounting surface flatness and bolt-hole alignment, and flush the drive circuit thoroughly to remove any metallic debris from the previous failure before installation.
Q: Is this E304C 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 E304C fits my excavator model?
A: Cross-check your existing part number against E304C. This assembly fits E304C Excavator 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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