Double Flange Track Bottom Roller for Komatsu D65 D85 Bulldozers in 50Mn Steel with HRC 40-55 Hardness

The YT brand double flange track bottom roller is purpose-built for Komatsu D65 and D85 series crawler bulldozers, providing reliable undercarriage support in medium to heavy earthmoving operations. Komatsu D65 and D85 bulldozers are among the most widely deployed tracked dozers globally, serving construction, mining, forestry, and agricultural applications. Each YT roller is forged from premium 50Mn steel with a double flange configuration that ensures precise track alignment and prevents derailment during aggressive dozing and ripping operations. The induction hardened tread surface achieves HRC 40-55 with a deep 4-10 mm case depth for extended service intervals. Sealed lifetime-lubricated double-cone bearings eliminate the need for daily greasing and provide smooth, reliable rotation under maximum load conditions. YT YinTai Parts leverages 35 years of specialized manufacturing to deliver consistent OEM-compatible quality.

• Double flange configuration provides maximum lateral track stability for Komatsu D65 and D85 bulldozer applications
• Forged 50Mn steel body with optimized grain flow delivers exceptional impact toughness in rocky terrain and hard ground
• Deep induction hardened layer of 4-10 mm at HRC 40-55 ensures consistent wear resistance throughout the service life
• Heavy-duty sealed double-cone bearing assembly handles the elevated static and dynamic loads of bulldozer operations
• Precision CNC machined mounting interfaces ensure exact alignment with Komatsu D65EX/PX and D85EX/PX track frames
• Direct replacement compatible with Komatsu D65EX-12/15/16/17/18 and D85EX/PX-15/18 bulldozer model series
• Industrial-grade anti-corrosion coating withstands exposure to mud, water, chemicals, and extreme temperature cycling

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 double flange track bottom rollers for Komatsu D65 and D85 bulldozers serve critical roles in land development, road construction, mining overburden removal, forestry operations, landfill management, and agricultural land preparation. Komatsu D65 bulldozers are the industry standard in the 18-ton dozer class, widely used by contractors and government agencies worldwide for their reliability and productivity. The D85 model at 27 tons extends capability to heavier applications. YT aftermarket rollers support these machines across diverse working conditions including cohesive clay soils, abrasive sandy terrain, rocky ground, and wet muddy environments. Our bottom rollers are particularly valued in emerging market construction sectors across Southeast Asia, Africa, the Middle East, and Latin America where Komatsu bulldozers form the backbone of national infrastructure development programs.

Q1: Are YT double flange bottom rollers suitable for Komatsu D65 and D85 bulldozers operating in hard rock conditions?
A1: Yes, our YT-D65-85-DF double flange bottom rollers are designed for demanding applications. The forged 50Mn steel construction with deep induction hardening provides excellent impact resistance and wear protection for rocky terrain, quarry overburden, and hard ground conditions.

Q2: What Komatsu D65 and D85 model variants are compatible with YT bottom rollers?
A2: YT rollers are compatible with Komatsu D65EX-12, D65EX-15, D65EX-16, D65EX-17, D65EX-18, D65PX variants, and D85EX-15, D85EX-18, D85PX models. If your specific variant is not listed, contact our technical team for verification.

Q3: How does the double flange design benefit bulldozer operations compared to single flange?
A3: Double flange rollers provide lateral track guidance on both sides of the roller, preventing the track chain from shifting sideways during dozing and ripping operations where asymmetric loads are common. This is essential for bulldozer applications where track derailment would cause significant operational downtime.

Q4: What maintenance is required for YT sealed and lubricated bottom rollers?
A4: YT sealed lifetime-lubricated bottom rollers require no daily greasing. Maintenance consists of periodic visual inspection for oil leaks, abnormal wear patterns, and flange damage. We recommend inspection during every regular service interval and replacement when tread wear reaches the recommended limit.

Q5: Can YT provide complete undercarriage kits for Komatsu D65 and D85 bulldozers?
A5: Yes, we supply complete undercarriage packages including track chains, track shoes, bottom rollers, top rollers, idlers, sprockets, and hardware for Komatsu D65 and D85 bulldozers. Complete kit pricing provides additional cost savings versus individual component purchases.

Q6: What is your quality control process for bulldozer undercarriage components?
A6: Our quality control includes incoming material spectrographic analysis, in-process dimensional inspection using CMM equipment, post-heat-treatment hardness testing on every batch, ultrasonic flaw detection, random load testing to 150% of rated capacity, and final visual inspection before packaging and shipment.

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.