Maintenance teams running Caterpillar E311C, E311 and E312 excavators face declining swing torque, increasing hydraulic bypass, and premature reduction assembly wear under continuous heavy-load conditions. The 169-5549 swing gearbox resolves these issues with precision-engineered planetary reduction, consistent high-torque rotary output, and extended service intervals — enabling parts distributors and fleet operators to minimize equipment downtime and strengthen aftermarket inventory offerings.
Item NO.:
169-5549Order(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In StockEngineered as a precision OEM-equivalent service replacement, the 169-5549 reliably supplies robust high-torque rotary motion, suppresses internal mechanical loss, and prolongs overhaul cycles.
| Part Number | 169-5549 |
|---|---|
| Part Name | E311C E311 E312 Excavator Swing Gearbox Assembly |
| Compatible Brand | CATERPILLAR |
| Applicable Models | E311C, E311, E312 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 E311C, E311, and E312 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 169-5549 specifications for CATERPILLAR E311C series excavator hydraulic swing systems.
FAQ
Q: What are the common symptoms of a failing 169-5549 swing gearbox?
A: Key warning indicators include hesitant or uneven swing action, the upper structure coasting after controls are released, grinding or hammering sounds from the drive unit, and progressive decline in rotary power.
Q: What should be checked before installing the 169-5549?
A: Confirm hydraulic oil meets ISO cleanliness threshold, verify the main circuit alignment matches Caterpillar specifications, inspect the mounting surface for flatness, and purge the system.
Q: Is this 169-5549 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 169-5549 fits my excavator model?
A: Cross-check your existing part number against 169-5549. This assembly fits E311C, E311, and E312 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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