Quanzhou Mingzhu Technology Development Co., Ltd
| Application | Compact Excavator Undercarriage System |
| Product Type | Excavator Top Roller / Upper Roller |
| Packaging Details | Export pallet packaging |
| Roller Shell Hardness | HRC 52–58 |
| Supply Ability | 1500 MT/month |
| Payment Terms | D/A |
| Shaft Hardness | HRC 28–35 |
| Delivery Time | 3-5 days |
| Product Name | PC40B Carrier Roller |
| Material | High-Strength Alloy Steel |
| Certification | CE、CNAS、COC、SGS、ISO |
| Model Number | PC40B |
| Brand Name | STST |
| Place of Origin | Fujian, China |
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Product Specification
| Application | Compact Excavator Undercarriage System | Product Type | Excavator Top Roller / Upper Roller |
| Packaging Details | Export pallet packaging | Roller Shell Hardness | HRC 52–58 |
| Supply Ability | 1500 MT/month | Payment Terms | D/A |
| Shaft Hardness | HRC 28–35 | Delivery Time | 3-5 days |
| Product Name | PC40B Carrier Roller | Material | High-Strength Alloy Steel |
| Certification | CE、CNAS、COC、SGS、ISO | Model Number | PC40B |
| Brand Name | STST | Place of Origin | Fujian, China |
| High Light | pc40b excavator top roller ，pc40b top roller excavator ，impact resistance excavator top roller | ||
The PC40B Top Roller is a high-performance excavator undercarriage component engineered to support the upper track chain and ensure smooth crawler movement. Designed for Komatsu PC40B excavators, this carrier roller delivers excellent durability, stable operation, and long service life in compact excavator applications.
The PC40B top roller uses a hardened contact surface designed to resist continuous friction between the roller and track chain. The optimized surface hardness reduces wear caused by abrasive materials, improving durability and extending replacement intervals.
The reinforced roller structure provides excellent resistance against shock loads, vibration, and repeated impacts during excavator operation. This helps prevent cracks, deformation, and premature failure in harsh working conditions.
The precision-ground roller profile ensures smooth contact with the upper track chain, reducing vibration and improving crawler stability. Stable chain support also helps minimize uneven wear across the complete undercarriage system.
The floating Duo Cone sealing system effectively prevents dust, mud, water, and other contaminants from entering the internal bearing area while maintaining proper lubrication for long-term operation.
Advanced CNC machining ensures accurate dimensions and proper fitment with the excavator undercarriage system. The precise manufacturing process helps improve installation efficiency and operational reliability.
The PC40B Top Roller is suitable for:
Feature | Customer Benefit |
|---|---|
| High Abrasion Resistance | Reduces wear caused by continuous track contact |
| Enhanced Impact Resistance | Improves durability under shock and vibration loads |
| Hardened Roller Surface | Extends service life in abrasive environments |
| Reinforced Roller Structure | Provides reliable support under heavy loads |
| Precision Machining | Ensures accurate installation and smooth operation |
| Floating Duo Cone Seal | Protects internal components from contamination |
| Permanent Lubrication | Reduces maintenance requirements |
| OEM Precision Design | Provides dependable replacement performance |
The PC40B top roller supports the upper section of the track chain, helping maintain proper chain movement, reduce track sag, and improve excavator undercarriage stability.
A wear-resistant contact surface reduces material loss caused by continuous friction, allowing the roller to maintain proper dimensions and performance for a longer period.
Excavators often operate on uneven terrain where vibration and shock loads occur frequently. Enhanced impact resistance helps prevent cracks and structural damage during operation.
Yes. It is designed for Komatsu PC40B compact excavators and is suitable for construction, landscaping, utility, and earthmoving applications.
PC40B Top Roller, High Abrasion Resistance PC40B Top Roller, Excavator Undercarriage Parts, PC40B Top Roller, Enhanced Impact Resistance PC40B Top Roller
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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