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RITO 311506 Piston Ring HD450VII A8V55 311506 Driving Power Device Maintenance Spare Part Excavator Repair Kit

Experiencing severe fluid bypass inside your main pressure cylinders or noticing a persistent drop in hydraulic cycle speeds as the oil reaches its peak operating temperature? Worn-out elastic sealing rings fail to contain high-pressure hydraulic oil within the piston chambers, letting volume flow escape into the low-pressure suction side and forcing your engine to work harder to move less material. Overhaul your pressure boundaries and reclaim original system efficiency by installing the high-resiliency RITO 311506 piston ring today.

  • Item NO.:

    311506
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Global spare parts stockists and heavy machinery fleet parts buyers require durable structural packing rings that handle continuous high-frequency reciprocating compression without tension loss. The robust RITO 311506 uses advanced metallurgical compositions subjected to multi-phase thermal tempering to ensure excellent sealing tension against precision cylinder walls. Order this essential maintenance spare part to lower your client's equipment operating costs and prevent premature pump internal wear.

311506 Piston Ring

 
Product Specifications

Part Number  311506
Part Name Piston Ring Driving Power Device Maintenance Spare Part Excavator Repair Kit
Compatible Brand Tongmyung
Applicable Models HD450VII Excavators with A8V55 Pumps
Application Excavator hydraulic system
Material High-Hardness Alloy Steel
Product Color Polished Steel Silver and Bright Golden Bronze
Working Temperature -35°C to 125°C
Key Function Packing the piston shaft circumference to prevent oil blow-by and maintain equal cylinder compression
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

High-Resiliency Alloy Matrix

Premium structural alloy steel holds consistent radial expansion force to eliminate internal fluid leakage.

Leak-Free

Micro-Finished Outer Sealing Perimeter

Polished to strict technical metrics to provide low friction sliding and stop interior barrel wear.

Direct Fitment

Extreme Temperature Fatigue Resistance

Thermal-stabilized material prevents relaxation or structural flattening under high cyclic pressure spikes.

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 clear technical feedback confirms to a workshop service mechanic that individual pump piston rings have worn down?
A: A noticeable drop in pump oil flow output when the fluid reaches full operating temperature, rapid escalation of pump casing heat, and excessive hydraulic cylinder drift under static load.
 
Q: What installation procedures must workshop mechanics follow when replacing this elastic ring onto the piston body?
A: Maintenance crews should utilize specialized expansion tools to stretch the ring gently over the shaft, checking that the gap clearance matches factory specs without forcing the joint.
 
Q: Is this 311506 part number built to standard industrial metrics for both factory and aftermarket rebuild sets?
A: Yes, it is precision-machined to standard factory blueprints for this specific 55cc displacement pump housing layout, ensuring seamless interchangeability for workshop managers.
 
Q: How does this hydraulic piston ring prevent surface galling during continuous hot summer mining shifts?
A: The alloy base undergoes a specialized surface carbonizing treatment that provides a durable, low-friction interface, stopping metal-on-metal friction under intense continuous pressure surges.
 

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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