Heavy vibration or play at the EX700 travel sprocket side, even after replacing the main shaft bearing? The 4219328 is the secondary travel bearing that supports the opposite end of the sprocket shaft; wear here allows shaft misalignment that accelerates damage to the entire final drive. RITO's heavy-duty roller bearing closes this gap and stabilises the drivetrain.
Item NO.:
4219328-OTOrder(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In Stock4219328 Travel Bearing for Hitachi EX700 excavator final drive gearbox. Paired with 4219329, this bearing supports the secondary shaft position in the EX700 final drive, sharing the combined radial and axial loads of track tension and slope travel. Through-hardened races and precision-profiled rollers deliver rated load capacity from first installation.
| Part Number | 4219328 |
|---|---|
| Part Name | Travel Final Drive Roller Bearing (Secondary) |
| Compatible Brand | Hitachi |
| Applicable Models | EX700 Excavator Final Drive |
| Application | Secondary shaft support bearing in EX700 travel drive gearbox |
| Material | Bearing steel, through-hardened races and rollers |
| Product Color | Metallic silver |
| Working Temperature | -30°C~+80°C |
| Key Function | Provides secondary radial and axial support for the EX700 sprocket shaft in the final drive |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Dimensioned and load-rated to work as a complementary pair with 4219329, sharing final drive shaft loads correctly without overloading either bearing position.
Full-complement cylindrical roller set sized for the high radial loads generated by EX700 track tension during travel on hard ground and steep slopes.
Races through-hardened for deep subsurface fatigue strength, preventing the early spalling that affects case-hardened races in high-load large excavator applications.
Outer diameter ground to OEM h6 fit for controlled-interference installation in the EX700 final drive housing bore without housing distortion.
FAQ
Q: How do I confirm the 4219328 secondary bearing has failed rather than the 4219329?
A: Mount a dial indicator on the sprocket shaft and measure radial play at both ends. Elevated play at the secondary bearing position (4219328 location) with normal play at the primary confirms the 4219328 needs replacement.
Q: Should I always replace 4219328 and 4219329 together?
A: When total operating hours are high, replacing both bearings simultaneously is cost-effective since the final drive is already disassembled. If only one shows spalling damage, the other can be reused if it passes dimensional inspection.
Q: What oil should be used after replacing 4219328 in the EX700 final drive?
A: Refer to the Hitachi EX700 service manual for the specified final drive gear oil grade (typically EP 90 or EP 140). Fill to the correct level and check for leaks after the first 10 hours of operation.
Q: How to confirm 4219328 is the correct bearing for my EX700?
A: Match bore, outer diameter, width and roller type. Provide the EX700 serial number and final drive model to our technical team for cross-reference.
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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