The High Quality Komatsu D85A-12 Bulldozer Track Roller is a replacement undercarriage component designed to support and guide the track chain of Komatsu D85A-12 crawler bulldozers. As a load-bearing part of the undercarriage, the track roller operates continuously under the machine’s weight and helps maintain stable track movement during pushing, grading, earthmoving, and other demanding applications.

Available undercarriage references for the D85A-12 include both single-flange and double-flange track rollers, depending on the roller position and undercarriage configuration. Aftermarket parts references also list 154-30-00404 for D85A-12 machines with serial numbers 10001-UP, but the correct roller should always be confirmed against the machine serial number and original component before ordering.

Xiamen Doozer supplies replacement track rollers for Komatsu bulldozers, with manufacturing focused on dimensional accuracy, wear resistance, and reliable sealing. The roller is designed to maintain consistent contact with the track chain and support smooth crawler operation in construction, quarrying, land clearing, and earthmoving environments.

A correctly matched track roller can help maintain track alignment and reduce abnormal wear within the undercarriage system. Roller selection should consider the flange configuration, mounting dimensions, track chain specification, and installation position.

• D85A-12 Application: Designed for selected Komatsu D85A-12 bulldozer configurations.
• Heavy-Duty Construction: Suitable for continuous crawler operation and demanding ground conditions.
• Stable Track Guidance: Supports smooth movement of the track chain along the track frame.
• Wear-Resistant Design: Manufactured for repeated loading and abrasive working environments.
• Reliable Sealing: Helps protect internal components against dirt, mud, and other contaminants.
• Multiple Configurations: Single-flange and double-flange options are available according to roller position.
• Replacement Solution: Suitable for replacing worn, damaged, leaking, or noisy track rollers.