Hydraulic pump internal friction increase, overheating, or abnormal noise is often caused by deterioration of rolling elements under continuous high-pressure rotation. AJ503807 needle roller bearing without inner ring is designed for K5V200 and JS330 hydraulic pump systems, providing compact load distribution support inside high-speed rotating assemblies.
Item NO.:
AJ503807Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time:
2-3 DAYSThis bearing is engineered for confined hydraulic pump environments where space efficiency and high radial load capacity must coexist. It is commonly used in hydraulic pump rebuilds, rotating group servicing, and heavy-duty excavator maintenance where restoring stable rotational performance is essential.

| Part Number | AJ503807 |
|---|---|
| Part Name | Needle Roller Bearing |
| Compatible Brand | NSK |
| Applicable Models | K5V200 / JS330 |
| Application | Excavator |
| Material | Bearing Steel (High Carbon Chromium Alloy) |
| Product Color | Steel Metallic |
| Working Temperature | -40°C to 140°C |
| Key Function | Radial load support and rotational stability |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |

Supports heavy radial forces within compact hydraulic pump structures.

Optimized for space-limited pump assemblies while maintaining stable rotation.

Helps minimize energy loss and heat generation during high-speed operation.


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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