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{"title":"Doosan DX225LC OEM Direct Replacement Top Roller with HRC50-58 Surface Hardness","imgUrl":"https:\/\/img.chinax.com\/nimg\/6e\/fb\/4093183492d74e85bfce2882dcfd-200x200-1\/doosan_dx225lc_oem_direct_replacement_top_roller_with_hrc50_58_surface_hardness_and_cnc_precision_machining.jpg","attrs":{"Color":"Black And Yelllow","Package":"Standard export boxes,wooden pallet,Wooden case\/ Plywood\/ Carton","Model Number":"DX225LC-3\/DX225LC-5","After-sales service provided":"Online support,Video technical support,Engineers available to service machinery overseas,Field maintenance and repair service,Field installation"}}
{"title":"Doosan DX200A DX200LC OEM Replacement Top Roller with 50Mn Wheel Body and CNC","imgUrl":"https:\/\/img.chinax.com\/nimg\/10\/1d\/4cd35a2e5d968553a66d65dc21b0-200x200-1\/doosan_dx200a_dx200lc_oem_replacement_top_roller_with_50mn_wheel_body_and_cnc_precision_processing.jpg","attrs":{"Payment Terms":"T\/T,L\/C","Hardness Depth":"8-12mm","Machinery Test Report":"Provided","Delivery Time":"7-15Days"}}
{"title":"Doosan OEM Replacement Top Roller with 40Mn Material and 1 Year Warranty for","imgUrl":"https:\/\/img.chinax.com\/nimg\/bb\/49\/37e6716ce3837486f21f6274d8b8-200x200-1\/doosan_oem_replacement_top_roller_with_40mn_material_and_1_year_warranty_for_dx220lc_9_dx225lc_9_excavators.jpg","attrs":{"Model Number":"DX220LC-9 DX225LC-9 DX200A DX200LC DX225LCA DX260LCA","Warranty":"1 Year2000 hour","Minimum Order Quantity":"1PCS","Color":"black,Yellow"}}
{"title":"Komatsu PC200-5 PC200-6 OEM Replacement Top Roller with High-strength 50Mn Steel","imgUrl":"https:\/\/img.chinax.com\/nimg\/9a\/ba\/173a13cf8758e4227374fd904b0e-200x200-1\/komatsu_pc200_5_pc200_6_oem_replacement_top_roller_with_high_strength_50mn_steel_and_hrc52_58_hardness.jpg","attrs":{"Color":"black,Yellow\/Black,Black or Yellow,yellow,Black\/Yellow","Appliion":"Excavator","Minimum Order Quantity":"1PCS","Features":"Durable"}}
{"title":"CAT 120B Top Roller OEM Direct Replacement Heat Treated and Coated with CNC","imgUrl":"https:\/\/img.chinax.com\/nimg\/94\/4a\/c06ac189ccbbd63fe2fbff106522-200x200-1\/cat_120b_top_roller_oem_direct_replacement_heat_treated_and_coated_with_cnc_ultra_precision_machining_for_excavators.jpg","attrs":{"Key Words":"Excavator Carrier Roller","Supply Ability":"10000PCS\/Months","Size":"Follow OEM Strictly","Model":"CAT120B\/E120B"}}
{"title":"CAT311 OEM Direct Replacement Top Roller with Heat Treatment HRC 52-58 and CNC","imgUrl":"https:\/\/img.chinax.com\/nimg\/70\/ce\/5e8858073240c616404e5d2b0d36-200x200-1\/cat311_oem_direct_replacement_top_roller_with_heat_treatment_hrc_52_58_and_cnc_ultra_precision_machining_for_excavator_undercarria.jpg","attrs":{"Minimum Order Quantity":"1PCS","Size":"Follow OEM Strictly","Material":"High-grade steel","Package":"Standard export boxes"}}
50Mn/35MnB Forged Carrier Roller for Doosan Daewoo DH220 – OEM Undercarriage Top Roller
Product Overview
This professional OEM replacement carrier roller (top roller) for Doosan Daewoo DH220 excavators is engineered for rigorous mining, construction, and heavy-duty environments. As a critical undercarriage component, it supports the upper track section, prevents track sagging, and ensures stable operation—directly impacting excavator efficiency and service life.
Key Features & Benefits
Manufactured from high-quality 50Mn or 35MnB alloy steel (optional)
Precision forging and casting with quenching and tempering heat treatment
Superior structural density, tensile strength, and exceptional wear resistance
Resists rock impact, gravel abrasion, and uneven terrain challenges
Direct OEM replacement—no modifications required for installation
100% Pre-delivery Dimensional, Hardness, Water Pressure & Air Tightness Test; Mechanical Test Report Available
Certification
ISO9001
Warranty
12-Month Warranty, Online After-Sales Support
Frequently Asked Questions
Is this carrier roller fully compatible with Doosan Daewoo DH220 excavators?
Yes, it is manufactured in strict compliance with DH220 OEM dimensions, mounting standards, and undercarriage specifications, enabling direct replacement of the original part without any modifications—perfectly matching the DH220's track system and ensuring stable operation.
What makes 50Mn/35MnB forged material suitable for DH220 mining applications?
50Mn and 35MnB alloy steels offer excellent hardness and wear resistance, while the forging and casting processes enhance material compactness and fatigue resistance. This combination prevents premature damage, deformation, and crack expansion caused by heavy loads, rock impact, and harsh mining terrain.
Are all DH220 carrier rollers inspected before shipment?
Yes, every unit undergoes 100% comprehensive inspection, including dimensional accuracy verification, surface hardness testing, 2.4MPa water pressure test, and air tightness test. We provide mechanical test reports and video inspections to ensure transparency and quality standards.
What is the function of this carrier roller for the DH220 excavator?
As a top roller, it is installed on the top inside the track, responsible for supporting the upper track section, preventing track sagging or rolling over, and ensuring the track runs parallel and smoothly. This improves the DH220's operational stability and extends undercarriage system service life.
Is this product suitable for global shipping to mining sites?
Yes, it is packaged in export-standard fumigated wooden pallets (moisture-proof, shock-proof, and anti-collision), capable of withstanding long-distance sea, land, and air transportation. We support shipping from major Chinese ports, ensuring intact delivery to global mining sites.
Packaging & Transportation
Packaging: Export-standard fumigated solid wooden pallets with moisture-proof, shock-proof, and anti-collision properties. Custom packaging available for orders of 5+ pieces.
Transportation: Suitable for sea, land, and air freight. Customized transportation solutions with delivery within 15 days after contract establishment (adjustable based on order quantity).
Loading & Unloading: Wooden pallet design compatible with standard handling equipment at ports and mining yards. Sample service available for quality verification before bulk orders.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2015
Total Annual:
5000000-8000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Nanan Zhongte Construction Machinery Factory is located in Quanzhou, Fujian Province, China — a city recognized by UNESCO as the starting point of the ancient Maritime Silk Road and also a vibrant metropolis with an economic output exceeding one trillion yuan. As a large enterprise specializin... Nanan Zhongte Construction Machinery Factory is located in Quanzhou, Fujian Province, China — a city recognized by UNESCO as the starting point of the ancient Maritime Silk Road and also a vibrant metropolis with an economic output exceeding one trillion yuan. As a large enterprise specializin...
