 |
 |  |
|
 |  |  |
 |  |  |
Product Overview
The carrier roller (top roller) is an important component of the undercarriage system, designed to support and guide the upper track chain, ensuring smooth and stable track movement during machine operation. It helps maintain correct track alignment and reduces vibration and abnormal wear.
Our carrier rollers are manufactured with strict quality control standards to deliver excellent wear resistance, reliable sealing performance, and long service life, even under tough working conditions.
Key Specifications
| Item | Description |
| Product Name | Carrier Roller / Top Roller |
| Application | Excavator & Bulldozer Undercarriage |
| Material | 50Mn |
| Manufacturing Process | Forged / Casting (Optional) |
| Heat Treatment | Quenched & Tempered |
| Surface Hardness | HRC 52–58 (Typical) |
| Sealing Type | Floating Seal (Duo-Cone Seal) |
| Color | Yellow / Black / Custom |
 |  |  |
Key Features
Reliable Sealing System – Duo-cone floating seals prevent oil leakage and dirt ingress
Excellent Wear Resistance – Heat-treated roller body ensures long working life
Smooth Track Guidance – Reduces vibration and ensures stable upper track movement
High Load Capacity – Designed to withstand continuous operating loads
Extended Service Life – Reduces maintenance frequency and operating costs
Applications
The carrier roller is widely used in:
General construction projects
Earthmoving and excavation operations
Road and infrastructure construction
Mining, quarry, and forestry applications
Suitable for standard and heavy-duty working conditions.
 |  |  |
Compatible Machines
CAT / KOMATSU / HITACHI / VOLVO / JCB / DOOSAN / HYUNDAI series
Excavators and bulldozers using undercarriage systems
For exact compatibility (e.g. CAT 320 / KOMATSU PC200), please contact us with your machine model or serial number.
 | |
Manufacturing & Quality Control
High-quality raw material selection
Precision forging or high-standard casting
Professional heat treatment (Q&T) process
CNC machining for accurate dimensions
100% inspection of sealing performance, hardness, and appearance
Each carrier roller is strictly inspected to ensure consistent quality before delivery.
Packaging & Delivery
Packing: Wooden case / Pallet
Export-standard anti-rust protection
OEM & ODM service available
Stable supply for bulk and long-term orders
 |  |  |
Why Choose Us
Professional Undercarriage Parts Manufacturer
Rich experience with CAT & KOMATSU compatible parts
Stable quality and competitive factory pricing
Fast response and reliable technical support
Inquiry
Looking for reliable carrier rollers for your excavators or bulldozers?
Contact us today for price, lead time, and technical support.
Custom branding and packaging are available.
English
العربية
Español
Pусский
Français
