Komatsu PC78US PC88MR Idler

Name: Komatsu PC78US PC88MR Idler
Brand: Rubbertrax
SKU: 21W-30-00014
Price: 461 USD
Availability: InStock

Buy 21W-30-00014 replacement tension idlers for your Komatsu PC78US and PC88MR mini excavator online. This fully assembled version is guaranteed to fit the models listed below. This idler assembly qualifies for free shipping when you order online.

SKU: 21W-30-00014

Weight: 135 lbs

Make: Komatsu

Shipping: Fast and Free!

Price: $461.00

Rubber tracks and wear parts are sold individually unless specified in the details. We offer free shipping across the USA when you order online and ship to a commercial address. *Some restrictions apply.

21W-30-00014 Idler Assembly Specifications:

This is an aftermarket replacement tension idler for Komatsu models PC78MR-6 through PC88MR-10 mini excavators as specified below. This is a fully assembled idler assembly, also known as Komatsu part number: 21W-30-00014.

19 Drive Teeth
Idler Width: 4.5 inches
Mounting Hole Spacing: 44mm on center
Idler Diameter: 20.5 inches

Alternate Models

This idler assembly (21W-30-00014) is known to fit:

Komatsu PC60-7
Komatsu
Komatsu PC70-7
Komatsu PC75UU-1
Komatsu PC75UU-2
Komatsu PC75UU-3
Komatsu PC78MR-6
Komatsu PC78US-6
Komatsu PC78US-8
Komatsu PC78UU-6
Komatsu PC80MR-3
Komatsu PC88MR-6
Komatsu PC88MR-8
Komatsu PC88MR-10

If your idler is fully tensioned to maintain track fitment, the idler wheel is likely worn out and requires replacement.

Please include the serial number for your mini excavator when purchasing so we can double-check to make sure you have selected the correct parts. Rubbertrax also offers rubber tracks and additional undercarriage parts for the Komatsu mini excavators.