Quanzhou Mingzhu Technology Development Co., Ltd
| Manufacturing Process | Hot Forging / Casting + Precision Machining + Induction Quenching |
| Packaging Details | Export pallet packaging |
| Supply Ability | 1500 MT/month |
| Material | 50Mn / 40MnB / 40Mn2 Alloy Steel |
| Payment Terms | T/T |
| Loading Ports | Xiamen |
| Surface Finish | Smooth Machined Surface |
| Delivery Time | 3-5 days |
| Color | Yellow |
| Axle Material | Quenched 42CrMo Medium Carbon Alloy Structural Steel |
| Model Number | EX55 |
| Certification | CE、CNAS、COC、SGS、ISO |
| Brand Name | STST |
| Place of Origin | Fujian China |
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Product Specification
| Manufacturing Process | Hot Forging / Casting + Precision Machining + Induction Quenching | Packaging Details | Export pallet packaging |
| Supply Ability | 1500 MT/month | Material | 50Mn / 40MnB / 40Mn2 Alloy Steel |
| Payment Terms | T/T | Loading Ports | Xiamen |
| Surface Finish | Smooth Machined Surface | Delivery Time | 3-5 days |
| Color | Yellow | Axle Material | Quenched 42CrMo Medium Carbon Alloy Structural Steel |
| Model Number | EX55 | Certification | CE、CNAS、COC、SGS、ISO |
| Brand Name | STST | Place of Origin | Fujian China |
| High Light | ex55 bottom roller excavator ，ex55 excavator bottom roller ，hitachi bottom roller excavator | ||
As a critical part of the undercarriage system, the EX55 bottom roller supports machine weight, guides track movement, and helps maintain smooth operation across challenging terrains. Built to meet OEM standards, it offers dependable performance and easy installation, making it an ideal replacement solution for worn or damaged rollers.
Designed for continuous operation under harsh working conditions, the EX55 bottom roller delivers exceptional durability and reduced replacement frequency.
Manufactured from premium-grade steel to provide superior structural integrity, impact resistance, and long-term reliability.
The roller shell undergoes precision heat treatment to enhance hardness and minimize wear caused by abrasive materials and heavy workloads.
Engineered to support heavy equipment and maintain stable machine performance in demanding applications.
Accurately machined components ensure proper fitment, smooth track engagement, and reduced friction during operation.
Equipped with high-quality seals that effectively retain lubrication and prevent contamination from dust, mud, water, and debris.
Item | Specification |
| Product Name | EX55 Bottom Roller |
| Equipment Type | Bulldozer / Crawler Equipment |
| Brand Compatibility | Hitachi |
| Part Category | Undercarriage Parts |
| Surface Treatment | Heat Treated |
| Feature | Long Service Life |
| Performance | Heavy Duty Operation |
| Installation | Direct Replacement |
| Condition | New |
Every EX55 Bottom Roller undergoes rigorous inspection and testing procedures, including:
This ensures consistent quality and dependable field performance.
Regular inspection can help identify wear before it affects machine performance. Common indicators include:
Timely replacement helps protect the entire undercarriage system and prevent costly repairs.
A bottom roller supports the weight of the machine and guides the track chain, ensuring smooth travel and stable operation.
A durable bottom roller helps reduce track wear, improve machine stability, extend undercarriage life, and minimize maintenance costs.
Yes. It is specifically designed to perform in heavy-duty construction, mining, quarrying, and earthmoving environments.
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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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