Products

RITO 820420 Hydraulic Pump Support ZX470 ZX450 820420 Swash Plate Support Excavator Pump Cradle Assembly Spare Parts

Heavy casing vibration and internal knocking inside your ZX470 main pump indicate worn swashplate support races. Defective cradle seating causes alignment errors, destroying pistons and stalling mining shifts.

  • Item NO.:

    820420
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Secure rock-solid rotary stability with this high-precision ZX470 hydraulic pump support. Part 820420 provides an identical engineering fit to prevent costly pump rebuild failures.

820420 Swashplate Support

 
Product Specifications

Part Number  820420
Part Name Hydraulic Pump Swash Plate Cradle Support Assembly
Compatible Brand Tongmyung
Applicable Models ZX470, ZX450 Large Mining Excavators
Application Excavator hydraulic system
Material High‑strength Alloy Steel
Product Color Matte Steel Grey / Protective Storage Oil Coating
Working Temperature -25°C to 110°C
Key Function Structural Support and Precise Angular Alignment for Variable Pump Swashplates
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Molybdenum-Coated Cradle Faces

Reduce friction friction and metal wear between sliding parts to maximize pump lifespan.

Leak-Free

Forged Structural Carbon Steel

Withstands extreme continuous cyclic shear stresses under high-tonnage heavy rock excavation shifts.

Direct Fitment

Ultra-Precision Ground Radius

Ensures zero-tolerance seating for smooth swashplate movement and accurate displacement changes.

Rigorous Testing

 Multi-Tier Quality Options

We provide Original, OEM, and Premium Aftermarket grades, allowing distributors to meet diverse client budgets and performance needs.

 

Excavator Hydraulic Part

FAQ


Q: What type of inspection confirms that a ZX450 pump cradle support needs immediate replacement during a rebuild?
A: Look for deep score marks on the radius surface, peeling of the low-friction layer, or micro-cracks under dye penetrant tests.
 
Q: Does this 820420 support assembly include matching low-friction liner shoes for immediate field installation?
A: This part number covers the precision-machined steel support base; matching liner plates can be added upon request.
 
Q: Why is proper lubrication of this cradle support critical during the initial pump assembly process?
A: Pre-lubing prevents metal-to-metal friction during the first few seconds of startup before internal pump pressure arrives.
 
Q: Can this support group be used in aftermarket hydraulic pumps or only in factory original housings?
A: It is machined to standard factory prints, making it compatible with both original equipment and premium replacement pumps.
 
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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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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