Komatsu PC300 and PC400 class machines use track shoes matched by size, part number, and bar design to the model generation. Confirm the serial number and part numbers before ordering, and compare aftermarket shoes on the same specification. Available widths vary by generation and configuration, so the serial-number parts book settles the fit rather than a general range.
Related reading: for chain and shoe wear, see our chain and shoe guide, and for Komatsu rollers, see our PC200 roller guide.
PC300/PC400 Fitment Fields
- Supplier: AFT Parts — aftermarket undercarriage components.
- Scope: PC300/PC400 shoe sizes, part numbers, bar designs, and set buying
- Compatibility: Komatsu PC-class and compatible families
- Application coverage: Alberta.
- Fitment: shoe part number and serial confirmed before dispatch.
Common Shoe Sizes for PC300/PC400 Class
PC300 and PC400 class machines run a range of approved shoe widths depending on the model generation, LC/NLC configuration, and application. The approved sizes come from the parts book for the serial number, and the width choice follows the ground the machine works.
In Alberta mining and heavy construction, these machines need shoes sized for both weight and ground conditions. The serial number settles the width and bolt pattern, and the application settles the bar design.
The LC (long carriage) configurations carry different undercarriage geometry than standard versions, and the shoe options follow the configuration. Checking the LC/NLC designation with the serial number is part of the fitment sheet, not a detail to leave out.
Reading Komatsu Shoe Part Numbers
Komatsu shoe part numbers identify the family, width, and bar design, but generation and configuration differences mean the serial-number parts book decides the match. Confirm the part number against the machine before ordering.
Read and photograph the old part number before removal, and cross-reference it with the supplier. A photographed number is the reference that survives a busy teardown.
3-Bar vs 2-Bar Designs
Shoe designs differ in the number of bars across the plate. Three-bar shoes spread the load for softer ground, while two-bar designs suit firmer conditions and different machines.
Match the bar design to the machine's specification, not to preference. The wrong design changes wear and ground disturbance, and it can turn an approved-width shoe into the wrong shoe.
The bar design also changes how the shoe sheds material: three-bar patterns clear more slowly in sticky ground, while two-bar patterns shed faster on firm sites. The site's material is part of the design choice, and the parts book states which designs the machine was approved for.
Matching Shoes to Working Conditions
Choose the approved shoe width and bar design for the dominant ground: wide, softer shoes for soft ground and flotation; narrower designs for firm and abrasive sites. The parts book sets the boundary, and the ground sets the choice inside it.
On mining-support duty, the width decision is also a stability decision. Confirm the approved options for the serial number before comparing prices between widths.
The ground profile on an Alberta site changes across the season, so the dominant-ground rule should be re-checked when the job mix changes. A machine moved from winter snow clearing to summer rock work may need a different width than the one it runs in January.
Buying a Complete Set: Shoe Count and Matching Hardware
A PC300/PC400 shoe set covers both sides of the machine, and the count and hardware must be confirmed with the part number. Ordering by the set rather than by the single shoe prevents the half-set surprise at the maintenance stop.
Confirm the bolt pattern and the hardware for the selected width in the same order. One delivery with shoes, hardware, and fitment confirmed is the difference between a scheduled change and a stopped machine.
OEM vs Aftermarket Shoe Quality
Quality aftermarket shoes match the OEM specification — dimensions, bar design, material, and bolt pattern. Compare the specification and warranty, not just the price, and ask the supplier to document the material and hardness.
For mining-support duty, material and hardness matter. A shoe that matches dimensions but not material will wear differently, and the difference shows in the cost per hour.
Ask the supplier to put the comparison in writing: dimensions, bar design, material grade, and the serial number the fit was confirmed against. A written comparison is a warranty document; a verbal one is a hope.
Complete Set Cost in CAD
A full shoe set for PC300/PC400 class is a major line item. Get an itemized CAD quote with freight, and compare warranty terms on the same basis, so the comparison between suppliers is apples to apples.
| Cost line | Why it belongs in the quote |
|---|---|
| Shoe unit price | The base line per shoe |
| Full set count | Confirms the set covers the machine |
| Hardware | Bolts and nuts for the set |
| Freight and lead time | The delivery cost and window |
| Warranty terms | What the supplier stands behind |
What to Send Your Supplier: A PC300/PC400 Shoe Fitment Sheet
The fastest way to a confirmed shoe order is a complete fitment sheet. Send the fields below with the request, and the supplier can confirm the part number before the quote is written.
| Fitment field | Where to find it |
|---|---|
| Machine serial number | Machine plate |
| Model and generation | Serial-number lookup |
| Old shoe part number | Stamped on the shoe or in the parts book |
| Width and bar design | Measure the old shoe |
| Bolt pattern | Measure the mounting |
Ordering the Set: Fitment Confirmation and Delivery Windows
Order the full set with fitment confirmed and the delivery window matched to the maintenance stop. A mining machine that waits for shoes is a machine that is not hauling material.
Confirm the set count, the hardware, and the lead time in writing before the order is placed. The confirmation is what turns a parts order into a scheduled job.
The delivery window should be confirmed in both directions: the shoes must arrive before the stop, and the stop must not slip past the shoes' availability. A parts buyer who confirms both dates at order time owns the schedule; one who confirms neither is surprised by both.
Generation Changes: Why the Same Model Number Can Need a Different Shoe
PC300 and PC400 model names span generations, and the undercarriage changed through them. Two machines of the same name from different years can carry different shoe widths and bolt patterns, and only the serial number separates them.
The generation check is the same check as the serial-number check: the parts book for the serial lists the shoes that generation actually used. Ordering on the model name alone is ordering before the generation question is answered.
Fitment Confirmation Checklist
- Confirm the machine serial number and model generation.
- Provide the old shoe part number for cross-reference.
- Ask for the itemized CAD quote and warranty terms.
Questions to Ask Before You Order
- What shoe sizes and part numbers apply to my serial number?
- Which width and bar design suit my dominant ground?
- What is the itemized CAD price for the full set?
See the Track Shoe collection and the 9G9096 track shoe for your machine.
Frequently Asked Questions
Do PC300 and PC400 use the same shoes?
Not necessarily. Shoe size and bar design vary by model generation and application. Confirm by serial number and parts book.
What is a 3-bar track shoe?
A three-bar shoe has three bars across the plate, spreading the load for softer ground. Two-bar designs suit firmer conditions.
Are aftermarket shoes as good as OEM?
Quality aftermarket shoes match the OEM specification. Compare dimensions, bar design, material, and warranty, not just price.