Attachments for Komatsu Machines
We hold operating weight, bucket pin diameter and coupler style for 6 Komatsu models, from 3.13 t up to 29.5 t. That means we can answer “will this bucket fit?” from your model number alone, instead of asking you to go out to the yard with a tape measure. Everything below is graded against those specs: direct fit where the weight class and pin size both line up, and check pin size where they do not, because a bushing kit is a five-minute conversation and a wrong-pin bucket on a freight truck is not.
Komatsu machines, by weight class
Operating weights are taken from Komatsu spec sheets. Pin diameter and coupler style are the typical factory configuration for that weight class. Verify against your own machine’s OEM documentation before ordering, particularly on a used unit where a previous owner may have changed the coupler.
| Model | Type | Operating weight | Pin Ø | Coupler |
|---|---|---|---|---|
| Komatsu PC30MR-5 | Mini Excavator | 6,900 lb · 3.13 t | 38 mm | Pin-on |
| Komatsu PC45MR-5 | Mini Excavator | 10,362 lb · 4.7 t | 45 mm | Pin-on |
| Komatsu PC78US-11 | Mini Excavator | 17,416 lb · 7.9 t | 50 mm | Pin-on |
| Komatsu PC138USLC-11 | Excavator | 30,400 lb · 13.8 t | 65 mm | Pin-on |
| Komatsu PC210LC-11 | Excavator | 50,700 lb · 23 t | 80 mm | Pin-on |
| Komatsu PC290LC-11 | Excavator | 65,000 lb · 29.5 t | 90 mm | Pin-on |
37 attachments fit at least one Komatsu model
This is the union across every Komatsu model above, with each attachment carrying the best verdict our fitment engine returned for it. A tool that fits one machine in the fleet may not fit another. Open the specific model page, or Machine Match, to pin it to a single machine before you buy.
Trademark notice
Komatsu and any associated model designations are the property of their respective owners. They appear on this page only to indicate which machines our attachments are built to fit. Quarrymark Attachments is an invented aftermarket brand and is not an authorised Komatsu dealer, nor affiliated with, sponsored by or endorsed by Komatsu. Our attachments are not OEM parts. Fitting a non-OEM attachment may affect the terms of your machine’s warranty, so check with your dealer if that matters to you.
