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RITO Needle Roller Bearing NK304630 Excavator Hydraulic Pump Needle Bearing for Construction Machinery

Severe internal friction, hydraulic pump humming noise and unsmooth component linkage are frequent concerns for parts suppliers and mechanical maintenance teams. Our NK304630 needle roller bearing is purpose-built for excavator hydraulic pump internal fitting structure. With dense roller layout and high-rigidity outer ring design, it resolves common procurement drawbacks like low pressure tolerance, rapid surface wear and short service cycle, ideal for round-the-clock heavy-load operation on construction and quarry sites.

  • Item NO.:

    NK304630
  • Order(MOQ):

    1
  • Payment:

    T/T, WESTERN UNION, CHINESE BANK,PAYPAL
  • Product Origin:

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

NK304630

 
Product Specifications

Part Number  NK304630
Part Name Needle Roller Bearing
Compatible Brand Other
Applicable Models Excavator
Application Excavator
Material High carbon chromium bearing steel
Product Color Bright metallic steel gray
Working Temperature -25℃ to 85℃
Key Function Offer accurate radial support for hydraulic pump components, reduce friction loss and maintain rotational stability
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Superior Radial Load Capacity

Compact structural design carries heavy radial pressure steadily, perfectly fitting high-load hydraulic pump working demands.

Leak-Free

Ultra-Low Friction Operation

Precision polished raceway reduces rolling resistance, lowering running noise and slowing down mechanical abrasion.

Direct Fitment

Integrated Rigid Outer Ring

Reinforced outer ring structure resists extrusion and deformation, keeping stable shape under sustained hydraulic impact.

Rigorous Testing

Tight Dimension Consistency

Strict manufacturing tolerance ensures precise assembly clearance, enabling hassle-free on-site replacement.

 

Excavator Hydraulic Part

FAQ


QWhat causes abnormal buzzing and weak response inside the hydraulic pump?
A: Worn needle roller bearing disrupts internal running clearance; replacing with NK304630 restores normal pump operation.
 
QWhat rules should be followed during bearing fitting?
 
A: Remove all burrs and impurities from the mounting groove, apply sufficient lubricant, and avoid forced hammering installation. 
 
QHow to confirm this bearing is compatible with your pump?
 
A: Check the model NK304630, it is a dedicated needle roller bearing for general excavator hydraulic pump assembly.
 
Q: Do bulk orders keep consistent precision and durability?
A: All units adopt unified production process and quality inspection, with reliable interchangeability for wholesale and fleet stock.
 
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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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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