
Part Name: Pin 209-70-57331
Part Number: 209-70-57331
Basic Info.
Part no. | 209-70-57331 | Material | steel |
Type | Pin | Part Type | Engineering machinery parts |
Compatibility | Komatsu | Transport Package | Wooden box |
Trademark | DIRON | Origin | Luoyang City |
HS Code | 84099991 | Production Capacity | 5000PCS/Year |
Product Details
- Date First Listed:2025/04/20
- Manufacturer:Diron Parts
Product Description

Product Introduction: Pin 209-70-57331 for Komatsu Equipment
Overview
The Pin 209-70-57331 is a precision-engineered replacement component designed for Komatsu excavators, ensuring secure attachment and smooth operation in heavy-duty applications. This pin is critical for maintaining structural integrity and alignment in hydraulic and linkage systems, particularly in bucket and arm assemblies. Available as a new aftermarket or genuine OEM part, it offers a reliable and cost-effective solution for equipment maintenance.
Key Features
- Material: Constructed from high-grade alloy steel (e.g., 42CrMo or 35CrMo), providing excellent strength, durability, and resistance to wear and corrosion.
- Design: Precision-machined pin with a chrome coating (0.02 to 0.03 mm layer) for enhanced wear resistance, featuring an induction-hardened zone (HRC 56 minimum to 1 mm depth) and a core hardness of HRC 22-25 for optimal toughness.
- Compatibility: Compatible with Komatsu excavator models, including PC650-8, PC650LC-8, PC700LC-8, PC710-5, PC710SE-5, PC750-6, PC750-7, PC750LC-6, PC750LC-7, PC750SE-6, PC750SE-7, PC800-6, PC800-7, PC800-8, PC800SE-6, PC800SE-7, PC800SE-8, PC850-8, PC850SE-8.
- Dimensions: Specific dimensions are not publicly detailed, but the pin is designed to match OEM specifications for the listed models, typically used in bucket and arm linkage systems.
- Quality Assurance: Manufactured to meet or exceed OEM standards, often produced with advanced induction hardening processes to ensure longevity and performance in demanding environments.
Benefits
- Enhanced Durability: The induction-hardened surface and chrome coating reduce wear and corrosion, extending the pin’s service life.
- Reliable Performance: Ensures secure attachment and smooth operation of linkage systems, minimizing downtime.
- Cost-Effective: Provides a high-quality aftermarket or OEM alternative, reducing maintenance costs compared to full assembly replacements.
- Ease of Installation: Designed as a direct-fit replacement, simplifying the repair process for technicians.
Applications
The Pin 209-70-57331 is tailored for use in Komatsu equipment, specifically suited for:
- Excavators: PC650-8, PC650LC-8, PC700LC-8, PC710-5, PC710SE-5, PC750-6, PC750-7, PC750LC-6, PC750LC-7, PC750SE-6, PC750SE-7, PC800-6, PC800-7, PC800-8, PC800SE-6, PC800SE-7, PC800SE-8, PC850-8, PC850SE-8.
- Industries: Construction, mining, and earthmoving, where Komatsu excavators are deployed for tasks such as digging, lifting, and material handling.
Technical Specifications
Warranty: Typically backed by a 6-month to 1-year warranty, depending on the supplier.
Part Number: 209-70-57331 (cross-referenced as 2097071331).
Unit of Measure: Each.
Condition: New aftermarket or genuine OEM.
Weight: Approximately 15-30 lbs (6.8-13.6 kg), based on similar pin estimates for large excavator linkage systems.
Note: While this description provides general information, specific details such as size, weight and exact material may vary by manufacturer and specific application. To obtain the most accurate and up-to-date information, it is recommended to consult a qualified parts supplier such as DIRON PARTS.
FAQ
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.
Q3. What is your terms of delivery?
A: FOB
Q4. How about your delivery time?
A: Generally, it will take 20 to 30 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery
Q8. How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from
ABOUT DIRON
- Factory OF DIRON
Diron Parts Group Have Its Own Factory Ensure That We Offer Better Price For Customers. Besides, Diron Corporate With Some Reliable Principal Manufacturers, So Diron Also Supply Customer Other Quality Spare Parts.








- Team OF DIRON
With 18 years of manufacturing and exporting experience, Diron has a team of knowledgeable engineers, inspectors and technical workers, sales staff, after-sales personnel.


- Products OF DIRON
As a distributor, we supply parts covers for :Complete engines, Long block, Short block, Engine spare parts, Electricla products, Hydraulic products, Transmission products, Undercarridge products.Among them, Cylinder head, Cylinder block, Spacer-plate, Bushing & Pin are our best-selling products.







