Excavator swing gearbox failures often start with internal bearing fatigue, which gradually leads to uneven rotation, vibration increase, and drivetrain instability. The RITO 188-4171 bearing is designed for Caterpillar swing gearbox systems used in CAT 336D and 325D, supporting stable rotational behavior under continuous heavy-load excavation conditions.
Item NO.:
188-4171Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time:
2-3 DAYSInstead of acting as a simple replacement part, this bearing is intended to restore internal motion balance inside the swing transmission system. It is commonly used in overhaul projects and field maintenance where consistent rotation accuracy, reduced mechanical noise, and long-cycle operational reliability are required.

| Part Number | 188-4171 |
|---|---|
| Part Name | Bearing |
| Compatible Brand | Caterpillar |
| Applicable Models | CAT 336D, CAT 325D |
| Application | Excavator |
| Material | High-Grade Bearing Steel |
| Product Color | Metallic Steel Grey |
| Working Temperature | -30°C to 120°C |
| Key Function | Support rotational shaft and load transmission |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |

Helps maintain smooth swing gearbox movement under fluctuating load conditions.




FAQ
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
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A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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