MachineU > China Products > Tools & Hardware > Hardware > Seals
50Mn Alloy Steel Carrier Roller for Doosan Daewoo DH220 with HRC 52-58 Hardness and Double-Lip NBR Seals
50Mn Alloy Steel Carrier Roller for Doosan Daewoo DH220 with HRC 52-58 Hardness and Double-Lip NBR Seals
50Mn Alloy Steel Carrier Roller for Doosan Daewoo DH220 with HRC 52-58 Hardness and Double-Lip NBR Seals
50Mn Alloy Steel Carrier Roller for Doosan Daewoo DH220 with HRC 52-58 Hardness and Double-Lip NBR Seals
Specifications
Place of Origin :
CHINA
Quality :
23KG HRC 50-55
Material :
50Mn HRC50-55
Color :
Black And Yelllow
Delivery Time :
7-15Days
Warranty Time :
12-18Months
Certification :
ISO9001
Packaging Details :
Standard Export Packaging
Price :
US$25-34
Brand Name :
ZTMC
Model Number :
DH220
Features :
Durable
Payment Terms :
L/C,T/T
Supply Ability :
10000PCS/Months
MOQ :
1PCS
Description
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
  • Double-lip NBR seals prevent contaminant intrusion
  • Reduces downtime and maintenance costs in mining and construction operations
  • ISO9001 certified with 12-month warranty and online after-sales support
Technical Specifications
Item Specifications
Applicable Models Doosan Daewoo DH220 Excavator
Material 50Mn Alloy Steel / 35MnB Alloy Steel (Optional)
Manufacturing Process Forging, Casting, Precision Machining, Quenching & Tempering
Surface Hardness HRC 52-58
Hardened Layer Depth 8-12 mm
Sealing System Double-Lip NBR Seals (Prevent Contaminant Intrusion)
Replacement Type OEM Direct Replacement, No Modification Required
Quality Inspection 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.
Send your message to this supplier
Send Now

50Mn Alloy Steel Carrier Roller for Doosan Daewoo DH220 with HRC 52-58 Hardness and Double-Lip NBR Seals

Ask Latest Price
Product Detail
Place of Origin :
CHINA
Quality :
23KG HRC 50-55
Material :
50Mn HRC50-55
Color :
Black And Yelllow
Delivery Time :
7-15Days
Warranty Time :
12-18Months
Contact Supplier
50Mn Alloy Steel Carrier Roller for Doosan Daewoo DH220 with HRC 52-58 Hardness and Double-Lip NBR Seals
50Mn Alloy Steel Carrier Roller for Doosan Daewoo DH220 with HRC 52-58 Hardness and Double-Lip NBR Seals

Nan'an Zhongte Engineering Machinery Factory

Verified Supplier
2 Years
fujian, quanzhou
Since 2015
Business Type :
Manufacturer, Exporter
Main Products :
Excavator Front Idler, Mini Excavator Front Idler, Bulldozer Front Idler
Total Annual :
5000000-8000000
Employee Number :
100~120
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Top Roller
MachineU China Products Tools & Hardware Hardware Seals
Contact Supplier
Submit Requirement