50Mn Steel HRC 40-55 Single Flange Bottom Track Roller for Hyundai Daewoo Excavator Undercarriage

The YT brand single flange track bottom roller is precision-manufactured as a direct replacement for Hyundai DH220 and DH300 series, as well as Daewoo Solar 220 and 300 series excavators. As Korean-manufactured excavators gain increasing market share globally, YT YinTai Parts provides a reliable aftermarket undercarriage solution that meets or exceeds OEM performance requirements. Each roller is forged from premium 50Mn steel and undergoes induction hardening on the tread surface to HRC 40-55 with a case depth of 4-10 mm. The sealed lifetime-lubricated bearing system eliminates daily greasing requirements and prevents contamination ingress. With 35 years of manufacturing experience and ISO 9001:2008 certification, YT delivers consistent quality across every production batch.

• Single flange design specifically matched to Hyundai DH220/DH300 and Daewoo Solar 220/300 excavator track frames
• Forged 50Mn steel body provides superior structural integrity compared to cast alternatives under impact loading
• Induction hardened tread surface at HRC 40-55 with 4-10 mm effective case depth for extended service intervals
• Lifetime-lubricated double-tapered roller bearings prevent metal-to-metal contact and reduce rotational friction
• Precision CNC machining ensures exact mounting bolt pattern alignment with OEM roller brackets
• Compatible with Hyundai Robex 220LC-7/9, DH220LC, DH300LC and Daewoo Solar 220LC-V, 300LC-V models
• Multi-layer anti-corrosion coating protects against moisture, chemical exposure, and extended outdoor storage

YT YinTai Parts operates a fully integrated manufacturing facility in Quanzhou, Fujian, China, spanning over 20,000 square meters. Our track bottom rollers undergo a rigorous production workflow: raw 50Mn steel inspection and cutting, precision forging or casting using 800-ton presses, CNC machining for exact dimensional accuracy to within ±0.02mm tolerance, heat treatment through induction hardening achieving HRC 40-55 surface hardness with 4-10mm hardened depth, precision grinding, shot blasting for surface finish, rigorous quality inspection including ultrasonic flaw detection and dimensional verification, anti-corrosion coating application, and final assembly with sealed lifetime-lubricated bearings. Each roller passes a 100% load testing protocol before shipment.

YinTai Parts (YT Brand) has served the global undercarriage parts market for over 35 years. Our factory in Quanzhou, Fujian Province, houses advanced CNC machining centers, automated forging lines, and in-house heat treatment facilities. We hold ISO 9001:2008 certification and CE marking, ensuring compliance with international quality and safety standards. Our engineering team of 50+ technical professionals continuously improves product designs using finite element analysis and fatigue testing. We export to over 60 countries across Asia, Europe, Africa, the Middle East, and the Americas, with an annual production capacity exceeding 120,000 track rollers. Our OEM and aftermarket replacement parts are trusted by construction companies, mining operations, and equipment dealers worldwide.

YT track bottom rollers for Hyundai DH220/DH300 and Daewoo Solar 220/300 excavators serve a broad range of applications including general construction, road building, quarry operations, demolition, and material handling. Korean-brand excavators are particularly popular in markets such as India, Southeast Asia, the Middle East, Africa, and Eastern Europe where their combination of reliability and competitive pricing drives high adoption rates. YT aftermarket rollers provide a cost-effective maintenance solution for fleet operators running mixed Korean and Japanese equipment, enabling centralized parts sourcing and simplified inventory management. These rollers deliver reliable performance in soil, clay, gravel, and mixed-material working conditions.

Q1: Are YT bottom rollers compatible with both Hyundai and Daewoo branded excavators?
A1: Yes, our YT-DH220-300-SF bottom rollers are designed for compatibility with Hyundai DH220, DH300, Robex 220LC, 300LC series as well as the equivalent Daewoo Solar 220LC-V and 300LC-V models, as these machines share the same undercarriage platform design.

Q2: How does forging compare to casting for track roller manufacturing?
A2: Forging produces a denser grain structure with superior mechanical properties compared to casting. Forged 50Mn steel rollers offer better impact resistance, fatigue strength, and wear resistance, making them preferred for heavy-duty undercarriage components that experience cyclic loading.

Q3: What is the expected service life of YT bottom rollers on Hyundai excavators?
A3: Under normal operating conditions in soil, sand, and moderate rock, YT bottom rollers typically achieve 2,000-4,000 operating hours before requiring replacement. Service life varies based on ground conditions, operator technique, and machine maintenance practices.

Q4: Do you stock common sizes for immediate availability?
A4: We maintain inventory of the most popular bottom roller models for Hyundai and Daewoo excavators. Common sizes can be shipped within 3-7 business days from our Quanzhou warehouse. Non-stock sizes are manufactured to order with 7-30 day lead times.

Q5: What quality certifications does YT YinTai Parts hold?
A5: We hold ISO 9001:2008 certification for our quality management system and CE marking for our products. Our manufacturing facility undergoes regular third-party audits to maintain certification compliance and ensure consistent product quality.

Q6: Can you supply bottom rollers for other Korean brand excavators like Doosan?
A6: Yes, we manufacture undercarriage components for the full range of Korean excavator brands including Hyundai, Daewoo, Doosan, and Samsung. Please provide your model number for specific product availability and pricing.

All YT track bottom rollers are packaged in export-grade materials for maximum protection during transit. Standard packaging includes individual plastic wrapping, foam cushioning, and sturdy wooden pallets or plywood cases. Custom packaging options are available upon request including branded boxes and bulk packaging. Our products carry a warranty period of 12-18 months from the date of shipment, covering manufacturing defects and premature wear under normal operating conditions. Warranty claims are processed within 15 business days with photographic evidence and failure analysis. We provide full technical support and replacement parts for any warranty-covered issue.