XCMG 800365353 XE1900/XE2000 Track Carrier Roller AS/Track Top Roller Assy/Heavy duty excavator chassis component source manufacturer and supplier-HANGONG MACHINERY CO.,LTD.
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Product Specifications
Technical Data Sheet: XCMG XE1900/XE2000 Track Carrier Roller Assembly (P/N 800365353)
Meta Description: HANGONG MACHINERY - OEM manufacturer of XCMG XE1900/XE2000 Track Carrier Roller (P/N 800365353). We supply heavy-duty excavator chassis components with superior forging, heat treatment, and sealing technology for mining and large-scale excavation.
1. Product Identification & Functional Overview
OEM Part Number: 800365353
Application: XCMG XE1900, XE2000, and other compatible super-large hydraulic excavators (190-200 ton class).
Component Name: Track Carrier Roller Assembly (Also known as Track Top Roller or Upper Roller)
Manufacturer & Supplier: HANGONG MACHINERY CO.,LTD.(DPW PARTS) – A specialized source for heavy-duty mining excavator undercarriage systems.
The Track Carrier Roller Assembly is a critical upper guide component within the excavator's undercarriage. Positioned on the top of the track frame, its primary functions are:
Track Chain Support & Guidance: It supports the upper section of the track chain, maintaining its correct alignment and preventing excessive vertical movement or whipping during high-speed travel and sudden directional changes.
Reduced Friction & Wear: By providing a smooth, rotating surface, it minimizes friction between the track chain and the track frame, leading to more efficient power transmission and reduced wear on both the chain and the roller itself.
Containment and Stability: It helps keep the track chain properly seated on the entire undercarriage system, contributing to overall machine stability, especially on uneven or inclined terrain common in mining sites.
2. Technical Specifications & Engineering Design
HANGONG MACHINERY engineers this carrier roller to withstand the unique stresses of ultra-large excavators, where the weight of the track chain itself and dynamic forces are immense.
Material Science & Forging:
Roller Wheel: Fabricated from high-tensile, high-manganese steel (55Mn, 60Si2Mn) via precision die-forging. This process ensures a dense, continuous grain flow that provides exceptional yield strength and impact resistance, capable of handling the shock loads from the heavy track chain.
Shaft & Bushings: The core shaft is machined from high-strength alloy steel (42CrMo), through-hardened for uniform strength. Internal bushings are manufactured from high-density, wear-resistant sintered bronze or steel-backed bronze composites to endure high rotational speeds and pressures.
Advanced Heat Treatment Regimen:
Core Toughness (Quenching & Tempering): The entire roller undergoes a computer-controlled Q&T process to achieve a tough and ductile core structure (approx. 35-42 HRC). This is vital for preventing crack propagation under continuous heavy loads.
Surface Hardness (Induction Hardening): The entire rolling contact surface is induction hardened to a significant depth (6-10mm), achieving a supreme surface hardness of 58-63 HRC. This provides maximum resistance to the abrasive wear caused by the constant friction with the track chain.
Heavy-Duty, Multi-Stage Sealing System:
For a top roller, preventing contamination from above (e.g., falling debris, dust, water) is crucial. We employ a robust, multi-stage sealing system:Primary Seal: A heavy-duty, spring-loaded radial lip seal made of advanced Nitrile (NBR) or Polyurethane for superior wear and tear resistance.
Labyrinth Seal: A complex, multi-channel mechanical seal designed to create a near-impenetrable barrier against fine dust and slurry, effectively ejecting contaminants through centrifugal force.
Grease Barrier: The seal cavity is packed with a high-viscosity, extreme-pressure (EP) lithium complex grease, creating a positive pressure zone that actively prevents contaminant ingress from all directions.
Lubrication: Designed as a sealed-for-life assembly, the internal cavity is permanently lubricated. A standard grease fitting is provided for maintenance of the outer seal barrier.
3. HANGONG MACHINERY Manufacturing(dpwparts) & Quality Assurance
As a dedicated undercarriage manufacturer, HANGONG MACHINERY CO.,LTD implements a rigorous, vertically integrated production protocol.
Manufacturing Workflow: Raw Material Certification → Die Forging → Rough Machining → Normalizing → Quenching & Tempering → Deep Induction Hardening → Precision CNC Finish Machining → Seal & Bearing Assembly → Performance & Seal Testing → Shot Blasting & Painting.
Stringent Quality Control Protocol:
Dimensional Metrology: 100% inspection using precision gauges and CMM (Coordinate Measuring Machines) to guarantee perfect OEM interchangeability and fit with the XE1900/XE2000 track frame and chain.
Hardness & Depth Verification: Rockwell and Brinell testing are used to verify core and surface hardness, ensuring they meet the stringent requirements for mining-class equipment.
Non-Destructive Testing (NDT): 100% of forged blanks undergo Magnetic Particle Inspection (MPI) to detect any subsurface flaws or material imperfections.
Rotational Torque & Seal Integrity Test: Every assembled carrier roller is tested for smooth, friction-free rotation and undergoes a pressure decay test to validate the sealing system's integrity against contamination.
4. Common Failure Modes & Engineering Solutions
Our carrier rollers are specifically engineered to prevent common failure points in super-large excavators:
Rapid Tread Wear: Mitigated by the deep, induction-hardened rolling surface.
Seal Failure & Bearing Contamination: Prevented by the heavy-duty, multi-stage labyrinth seal design, which is critical for top rollers exposed to falling debris.
Roller Seizure: Avoided through precise internal tolerances and the contaminant-free environment maintained by the sealing system.
Core Cracking from Sustained Load: Resisted by the superior structural integrity of the forged and properly heat-treated core.
5. HANGONG MACHINERY CO.,LTD: Your Strategic Partner for Heavy-Duty Undercarriage
We are a trusted manufacturer and supplier for the global mining and heavy construction sectors, offering:
OEM Direct Replacement: Our parts are manufactured to the exact original specifications for XCMG XE1900 and XE2000 excavators, ensuring flawless performance and compatibility.
Integrated Vertical Manufacturing: Full in-house control from forging to final assembly guarantees consistent quality, cost efficiency, and supply chain reliability.
Engineered for Mining & Extreme Duty: Our components are designed from the ground up for the most severe applications, delivering a service life that meets or exceeds OEM standards, thereby reducing total cost of ownership.
Global Logistics & Support: We possess the capacity and expertise to serve major end-users and distributors worldwide, ensuring reliable delivery to minimize critical machine downtime in mining operations.
