Quanzhou Mingzhu Technology Development Co., Ltd
| Manufacturing Process | Precision Forging, CNC Machining & Welding |
| Application | Excavator Undercarriage System |
| Payment Terms | T/T |
| Roller Profile | Precision Ground Running Surface |
| Delivery Time | 3-5 days |
| Packaging Details | Export pallet packaging |
| Bearing Type | Heavy-Duty Precision Bearing |
| Supply Ability | 1500 MT/month |
| Product Type | Excavator Carrier Roller / Top Roller |
| Shaft Hardness | HRC 28–35 |
| Certification | CE、CNAS、COC、SGS、ISO |
| Model Number | E303 |
| Brand Name | STST |
| Place of Origin | Fujian, China |
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Product Specification
| Manufacturing Process | Precision Forging, CNC Machining & Welding | Application | Excavator Undercarriage System |
| Payment Terms | T/T | Roller Profile | Precision Ground Running Surface |
| Delivery Time | 3-5 days | Packaging Details | Export pallet packaging |
| Bearing Type | Heavy-Duty Precision Bearing | Supply Ability | 1500 MT/month |
| Product Type | Excavator Carrier Roller / Top Roller | Shaft Hardness | HRC 28–35 |
| Certification | CE、CNAS、COC、SGS、ISO | Model Number | E303 |
| Brand Name | STST | Place of Origin | Fujian, China |
| High Light | excavator carrier roller e303 ，e303 excavator track roller ，wear resistance excavator track roller | ||
The E303 Carrier Roller is a precision-engineered upper roller designed to provide dependable track support, smooth chain movement, and long-lasting durability for excavator undercarriage systems. Manufactured from premium alloy steel using precision forging, CNC machining, induction hardening, and advanced sealing technology, this carrier roller delivers exceptional performance in demanding construction, mining, quarrying, and earthmoving applications.
Specification | Details |
|---|---|
| Product Name | E303 Carrier Roller |
| Product Type | Excavator Carrier Roller / Top Roller |
| Machine Model | E303 |
| Application | Excavator Undercarriage System |
| Material | High-Strength Forged & Cast Alloy Steel |
| Manufacturing Process | Precision Forging, CNC Machining & Welding |
| Heat Treatment | Induction Hardened Roller Shell |
| Roller Shell Hardness | HRC 52–58 |
| Shaft Hardness | HRC 28–35 |
| Bearing Type | Heavy-Duty Precision Bearing |
| Seal Type | Floating Duo Cone Seal |
| Lubrication | Lifetime Sealed Lubrication |
| Surface Finish | Anti-Corrosion Protective Coating |
| OEM / ODM | Available |
| Packaging | Export Wooden Cases, Pallets, or Customized |
The E303 Carrier Roller is suitable for:
Every E303 carrier roller is manufactured through a rigorous production process:
A carrier roller supports the upper section of the track chain, helping maintain proper track circulation, reducing chain sag, and improving overall undercarriage stability.
A hardened roller shell withstands continuous contact with the track chain, reducing abrasive wear and maintaining dimensional accuracy for longer service intervals.
A reinforced carrier roller is capable of supporting continuous operating loads without excessive deformation, ensuring reliable performance during demanding excavation work.
The floating Duo Cone seal retains internal lubricant while preventing contaminants such as dust, mud, and water from entering the bearing chamber, reducing wear and maintenance.
E303 Carrier Roller, Heavy-Duty Load Bearing Capacity E303 Carrier Roller, Carrier Roller, High Wear Resistance E303 Carrier Roller, Excavator Undercarriage Parts
Company Details
Business Type:
Manufacturer
Year Established:
2006
Total Annual:
8000000-12000000
Employee Number:
67~120
Ecer Certification：
Verified Supplier
Quanzhou Mingzhu Technology Development Co., Ltd Quanzhou Mingzhu Technology Development Co., Ltd
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