Operators of Caterpillar E70B, E70 and E75 excavators frequently face declining swing precision, increased rotary backlash, and gradual hydraulic drive inefficiency during extended work cycles. The 099-6551 swing gearbox assembly is purpose-built to address these challenges, delivering consistent high-torque rotary output, minimizing internal bypass leakage, and extending service milestones - empowering global parts distributors and heavy equipment fleets to significantly cut unplanned downtime.
Item NO.:
099-6551Order(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 099-6551 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.
| Part Number | 099-6551 |
|---|---|
| Part Name | E70B E70 E75 Excavator Swing Gearbox Assembly |
| Compatible Brand | CATERPILLAR |
| Applicable Models | E70B, E70, E75 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 E70B, E70, and E75 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 099-6551 specifications for CATERPILLAR E70B series excavator hydraulic swing systems.
FAQ
Q: What are the common symptoms of a failing 099-6551 swing gearbox?
A: Key indicators include unresponsive or uneven swing function, the superstructure continuing to rotate after the control stick centers, harsh grinding or rattling from the drive casing, and progressive loss of rotary power under working loads.
Q: What should be checked before installing the 099-6551?
A: Confirm gearbox oil achieves required cleanliness rating, validate the circuit pressure against Caterpillar OEM data, ensure the mounting pad is level and threaded bores are free of debris, and flush the entire drive loop.
Q: Is this 099-6551 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 099-6551 fits my excavator model?
A: Cross-check your existing part number against 099-6551. This assembly fits E70B, E70, and E75 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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