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RITO 4395457 Ball Bearing HPV145 EX300-5 EX350-5 ZX330 ZX330-3 892DLC Excavator Hydraulic Pump Device Ball Bearing Spare Parts

Excessive shaft play and severe internal friction within the hydraulic device quickly ruin high-value main pump rotating groups, causing sudden mechanical lockups. Heavy equipment fleet operators face catastrophic revenue losses when weak, sub-standard industrial bearings collapse under high axial loads. Eliminate devastating rotational wobble and unexpected pump failures with the premium 4395457 component.

  • Item NO.:

    4395457
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Stabilize your high-pressure rotary systems with the heavy-duty 4395457 main pump device ball bearing. Purpose-engineered for heavy excavators including EX300-5, EX350-5, ZX330, ZX330-3, and 892DLC, this precision spare part ensures zero-clearance kinetic alignment, decreases rolling resistance, and optimizes structural endurance.

4395457 Ball Bearing

 
Product Specifications

Part Number  4395457
Part Name Excavator Hydraulic Pump Device Ball Bearing Spare Parts
Compatible Brand Hitachi
Applicable Models EX300-5, EX350-5, ZX330, ZX330-3, 892DLC
Application Excavator hydraulic system
Material High-strength Alloy Steel
Product Color Metallic Silver
Working Temperature -30 to 135 Degrees Celsius
Key Function Hydraulic Pump Shaft Rotational Support and Axial Load Absorption
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

High-Load Ultra-Precision Steel Balls

Engineered to withstand extreme axial and radial hydraulic pressures without developing micro-cracks or surface deformation.

Leak-Free

Advanced Thermally-Stabilized Cage Assembly

Maintains perfect ball separation and structural geometry during continuous high-speed, heavy-duty mining operations.

Direct Fitment

Super-Finished Micro-Groove Raceways

Minimizes rolling friction and hydrodynamic drag to significantly reduce main pump operating noise and oil heat.

Rigorous Testing

Global Supply Tiering

We offer Original, OEM, and high-performance Aftermarket options to provide flexible procurement strategies for diverse regional markets.
 
 

 

Excavator Hydraulic Part

FAQ


Q: What are the primary fault symptoms indicating this hydraulic pump device ball bearing needs immediate replacement?
A: Critical indicators include a high-pitched whining or metallic humming from the HPV145 pump housing, abnormal iron powder buildup on the hydraulic suction magnet, shaft seal leakage due to movement, and sudden drops in pilot pressure.
 
Q: What are the critical technical installation requirements to ensure maximum service life?
A: Technicians must utilize a professional press or thermal induction heater to mount the bearing; never hammer the rings directly. Ensure the shaft seat is free of scoring, and coat the assembly in clean hydraulic fluid before sealing the device.
 
Q: How can procurement managers verify exact fitment and compatibility before ordering?
A: Please cross-reference part number 4395457 with your excavator device catalog. Verifying whether your machine is equipped with the genuine HPV145 regulator setup allows our engineering team to double-check dimensions and ensure a 100% correct match.
 
Q: How does this hydraulic pump device ball bearing perform under extreme mining environment conditions?
A: The high-purity alloy steel undergoes double-tempering treatment to prevent catastrophic ring cracking under heavy shock loads. It maintains precise radial clearance and full structural hardness in tough working conditions ranging from -30 to 135 Degrees Celsius.
 

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.

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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.

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