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RITO Steel Bushing Pin Bushing 20Y-70-31512 Bushing PC200-8M0 Excavator Boom Bushing for Excavator Undercarriage

Excessive joint play and "oval" wear in excavator booms lead to dangerous instability and structural cracking. Standard bushings often fail under the extreme impact of mining tasks, causing catastrophic pin seizure. The 20Y-70-31512 addresses these high-stress points, preventing the massive repair costs that paralyze your PC200-8M0 fleet.

  • Item NO.:

    20Y-70-31512
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Reinforce your linkage with the 20Y-70-31512. Engineered with vacuum-hardened alloy steel, our bushings offer superior grease retention and wear resistance compared to low-cost alternatives. We provide wholesalers with a reliable supply of OEM-grade components, ensuring 24/7 uptime and precision for every heavy-duty construction project.

20Y-70-31512 Bushing

 
Product Specifications

Part Number  20Y-70-31512
Part Name Steel Bushing / Boom Bushing
Compatible Brand Komatsu
Applicable Models Komatsu PC200-7, PC200-8, PC200-8M0
Application Excavator hydraulic system
Material 40Cr or 42CrMo Structural Alloy Steel
Product Color Metallic Gray or Phosphate Black
Working Temperature -40 to +125 degrees Celsius
Key Function Load bearing and friction reduction for pivot joints
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Hardened Alloy Surface

Features a deep carburized layer to resist abrasive wear and deformation under the intense loads of mining excavation

Leak-Free

Internal Grease Grooving

Optimized spiral or cross-hatch grooves ensure uniform lubrication, preventing the 20Y-70-31512 from dry-friction seizing.

Direct Fitment

Precision Dimensional Tolerance

Machined to exact OEM specifications to ensure a perfect press-fit, eliminating joint rattle and extending pin service life.

Rigorous Testing

Reliable Supply Tiers

Available in Original, OEM, and Premium Aftermarket grades, allowing distributors to meet diverse client budgets with guaranteed quality.
 
 

 

Excavator Hydraulic Part

FAQ


Q: What specific failure symptoms indicate that the 20Y-70-31512 bushing needs replacement?

A: Common diagnostic signs include excessive "play" or wobbling in the boom joints, loud squeaking during movement, and visible metal shavings near the pivot points. If you notice the joint is overheating or the pin is becoming difficult to grease, the 20Y-70-31512 has likely reached its wear limit and must be replaced to avoid damaging the main boom casting.

Q: What are the technical requirements for a professional bushing installation?

A: For the PC200-8M0, we recommend a cryogenic installation (cooling the bushing) or using a professional hydraulic press to ensure the 20Y-70-31512 is seated evenly. The housing bore must be meticulously cleaned and checked for roundness. Post-installation, ensure the grease ports are aligned and the joint is fully purged with fresh EP2 grease before the machine enters service.

Q: How does RITO manage brand identity and supply chain stability for wholesalers?

A: We offer a strategic "Tri-Tier" quality system, providing Original, OEM, and high-performance Aftermarket options. Our supply chain is designed for consistency; we maintain high stock levels of the 20Y-70-31512 to ensure that agents can bypass the long lead times of traditional dealers, providing immediate relief for mining and rental fleet customers.

Q: How can we confirm the 20Y-70-31512 is the correct fit for our Komatsu fleet?

A: Fitment is best confirmed by the machine's serial number and the specific position on the linkage (e.g., boom foot or bucket cylinder). While the 20Y-70-31512 is a standard for the PC200-8M0, we provide detailed ID/OD/Length measurements for verification, ensuring 100% procurement accuracy and preventing costly return logistics for international buyers.

Q: How does this steel bushing perform in extreme environmental conditions?

A: Engineered for "Extreme Duty" cycles, our bushings utilize specialized heat treatment that prevents brittleness in sub-zero arctic conditions (-40°C) and maintains structural hardness in high-heat tropical environments (up to +125°C). This stability ensures consistent joint protection whether operating in permafrost or high-ambient open-pit mines.

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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