Komatsu PC05 / PC05-7 Bottom Roller | Part #TR20M-30-31301

This bottom roller is a new aftermarket undercarriage replacement part built to fit Komatsu equipment to help restore proper track movement, alignment, and machine reliability.

Product details

• Part type: Bottom Roller
• Reference part number: TR20M-30-31301
• Condition: New aftermarket replacement
• Application: Compact equipment undercarriage repair

Why this part matters

A worn bottom roller can cause track misalignment, accelerated track wear, vibration, and reduced undercarriage life. Replacing worn components helps the track system run straighter and protects the rest of the undercarriage.

Build and fitment notes

• Designed to replace worn or damaged undercarriage components
• Built for contractor-grade compact equipment use
• Supports and guides the track system

Recommended with

For best service life, inspect the matching rubber tracks, drive sprockets, rollers, and idlers at the same time. Contact our fitment team to confirm the correct parts for your machine.

The TrackTECH advantage

• Same-day shipping on in-stock orders placed before 12 PM CT
• Free Shipping to the Lower 48
• 24-month warranty on materials and workmanship
• Contractor pricing — bulk and fleet discounts available
• Fitment verified before shipping