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ApplicationOur products consist of undercarriage parts for bulldozer and excavator such as Track link,Track roller,Carrier roller,Sprocket,ldler,Track shoe,Cutting edge,End bit,Tooth Bucket,Track pin,Track bush, Engine parts,Track boit&nuts.U-bolt,Centre bolt,Wheel bolt and other related parts.
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About UsFujian Yongsheng Machinery Parts Co., Ltd. is located in Quanzhou City, Fujian Province, which is one of the most developed regions of China Machinery Manufacturing.The company was established in 2003, after approximately 10years' effort, and now it is one of the leading construction machinery parts auto parts manufacturers in CHINA.
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BlogSuppliers who pass Quality ManagementSystem Certification, and have onsitematerials or finished products inspected,as certified by independent third parties.
Contact Us
E-mail :
sales@china-ysm.com
Phone/WhatsApp：
+86-18606961587
Address：
No.8 Binjiang Street, Binjiang Industrial Zone, Xiamei Town, Nan An City, Quanzhou City, Fujian Province, China
PC300-7 Track Roller for Komatsu Excavator Parts | Forged 40Mn2 Lower Roller
隐藏域元素占位
Product Introduction
Heavy-Duty Komatsu PC300-7 Track Roller for Excavator Undercarriage
Are you tired of frequent fleet downtime caused by the short service life of undercarriage parts? Our premium PC300-7 Track Roller (also known as Bottom Roller or Lower Roller) is specifically engineered to endure the harshest working conditions. Ideal for heavy-duty mining and rugged construction projects, this roller keeps your machinery running efficiently while saving you time and money.
Advanced Technical Advantages
- Forged 40Mn2 Material: We utilize genuine, high-density 40Mn2 steel for forging. After precise induction heat treatment, the surface hardness reaches HRC 50-55, providing exceptional wear resistance and preventing shell deformation under extreme loads.
- Japanese Friction Welding: Manufactured using advanced friction welding technology imported from Japan. This ensures perfect structural balance, maximum weld strength, and 100% elimination of oil leakage risks.
- Premium COB Copper Bushings: Equipped with top-tier domestic COB copper bushings. While more expensive to source, they offer unmatched durability, superior heat dissipation, and a much longer lifecycle than standard alternatives.
Product Specifications
| Key Features | Technical Data |
|---|---|
| Product Name | Track Roller / Bottom Roller / Lower Roller |
| Compatible Machine | Komatsu PC300-7 Crawler Excavator |
| Material & Craft | Forged 40Mn2 Steel with Friction Welding |
| Surface Hardness | HRC 50-55 |
| Guaranteed Lifespan | Minimum 2,000 Working Hours |
| Warranty Service | 1-Year Factory Warranty |
Factory-Direct OEM & Custom Services
As a professional manufacturer of excavator and bulldozer undercarriage spare parts, we stand firmly behind our quality. We confidently offer a minimum 2000-hour operational guarantee along with a full one-year warranty.
Custom Blueprints Welcome: If you are sourcing rare, vintage, or customized undercarriage components, simply supply us with your technical drawings or samples. Our engineering team will provide a tailored manufacturing solution to fit your exact specifications.
Our Advantage
1、Equipment
We have complete production line and testing equipment, including CNC process center,
2、Group
We have our own team to research, design, produce and sell.
3、Quality
We have passed IS0 9001:2005. standard, stable,reliable
4、Price
Our products compare favorably with other traders.
5、History
We are a company combined with R&D, production and sales wholly,
6、Philosophy
With excellent quality, firt-class service, honest business
Custom Process
Helpful information for identifying replacement parts for undercarriage for excavators in
this quick reference guide and for models and manufacturers not listed in this catalog
1. Identify the excavator's full model and serial numbers.
2. Determine the quantity of top and bottom rollers. If you can, find out how big the bottom roller bolt hole is.
3. Count the number of sprocket bolt holes and teeth. If you can, find out how big the bolt hole is.
4. Count the number of links and measure and estimate the original track chain pitch.
5. Calculate and measure the bushing and pin original diameters.
6. Obtain any track links identifying marks, such as the manufacturer and part number.
7. Calculate the bolt hole pattern and the width of the track shoe.
After-Sales
Helpful information for identifying replacement parts for undercarriage for excavators in
this quick reference guide and for models and manufacturers not listed in this catalog
1. Identify the excavator's full model and serial numbers.
2. Determine the quantity of top and bottom rollers. If you can, find out how big the bottom roller bolt hole is.
3. Count the number of sprocket bolt holes and teeth. If you can, find out how big the bolt hole is.
4. Count the number of links and measure and estimate the original track chain pitch.
5. Calculate and measure the bushing and pin original diameters.
6. Obtain any track links identifying marks, such as the manufacturer and part number.
7. Calculate the bolt hole pattern and the width of the track shoe.
Payment
We can accpet payment via TT, LC,DP,DA, WESTERN UNION; Sample order lead time is in 7-10 days, Mass quantity order lead time is 25-30 days; We can provide you professional technical support. And our products quality gurantee is 12 months.
Our Service
-Professional OEM Manufacturer
-Specializing in high quality undercarriage parts for mining area
-With one year or 2000 working hours guarantee
-Quick delivery time
-Exclusive agent accepted
-Same quality with some famous brands
-Unmatched customer service
-Full compliance with European quality standards
-Excellent quality with competitive prices
- Have cooperated with a lot of importers for more than 15 years
You Are Currently Facing The Problem?
Our company creates a professional network for sales and services, extends its reach of services over the globe, sets up an integrated system for pre- during and post sale services.
What Is The Delivery Time?
For The Excavator Parts Nomally We Can Offer Within 30 Days, If For Dozer Partsnomally 45 Days.
What Is The Warranty Of Your Products?
For Normal Use Excavator And Dozer Undercarriage We Offer 1 Year Or 2000 Working Hours
What Is Your Payment Terms?
You Can Choose Tt,Lc,Dp,Da,Western Union.
What Is Your Moq?
Nomally Our Moq Is 3000 Usd.
What Are The Pakages Of Your Products?
We Can Offer Fumigating Wooden Pallets/Boxes,Plywood Pallets/Boxes,Or Cartons
We Can Provide You
1.For The Excavator Parts Nomally We Can Offer Within 30 Days, If For Dozer Partsnomally 45 Days.
2.For Normal Use Excavator And Dozer Undercarriage We Offer 1 Year Or 2000 Working Hours
3.You Can Choose Tt,Lc,Dp,Da,Western Union.
4.Nomally Our Moq Is 3000 Usd.
5.We Can Offer Fumigating Wooden Pallets/Boxes,Plywood Pallets/Boxes,Or Cartons
6.Our Nearest Port Is Xiamen Port China.
7.We Can Offer Certificate Of Original,Form E, Form A Etc.
8.Our Factory Are Located In Quanzhou City, Fujian Province,China
Our Fast Train Station Name Is Quanzhou,Our City Airport Name: Jinjiang Airport
Specialized OEM Services
1. Material
2. Color
3. Size And Shape
4. Logo
6. Packaging
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