What size tracks fit a IHI 45NX?

The IHI 45NX takes 400x72.5x72 tracks as its primary size.

What other machines share IHI 45NX tracks?

12 other models take the same primary size, including Case CX50C, Caterpillar 304CR, Caterpillar 305.5DCR, Caterpillar 305CR, Hitachi ZX40U.

IHI 45NX Tracks

Mini excavator · current model · independently corroborated

The IHI 45NX takes 400x72.5x72 rubber tracks (400 mm, about 16 in wide; 72.5 mm pitch; 72 links).

Fitment detail

Configuration	Size	Width	Pitch	Links
Primary	`400x72.5x72`	400 mm / ~16"	72.5 mm	72

Specifications and sources

Spec	Value	Source
Primary track size	400x72.5x72	tracksandtires.com

Track size independently corroborated by a second source: fortishd.com.

Tracks you can buy for the 45NX

Available tread patterns (schematics are our own drawings, verified against seller product photos):

MX 2
Block 1

3 products across 1 sellers — every distinct tread pattern and duty tier we verified. Observed prices, dated.

`400x72.5x72` — 16" wide 3 options

Tread	Duty	Price	Stock	From
Block	Heavy Duty	$1533.00 /	in stock	tracksandtires.com all orders ship within 1 business day
MX	Extreme Duty	$1750.00 /	in stock	tracksandtires.com all orders ship within 1 business day
MX	Extreme Duty	$1787.00 /	in stock	tracksandtires.com all orders ship within 1 business day

Available from

Seller	Observed price	Options seen	Ships	Checked
fortishd.com	$1641 / track	C-lug, zigzag, multi-bar, block	same or next-day shipping	2026-08-19
tracksandtires.com	$1750 / track	· XD	all orders ship within 1 business day	2026-08-19

Sellers listed alphabetically — every seller we independently verified for this machine. Prices are observed public listings on the dated check, not offers by this site; this site sells nothing and has no affiliate relationships.

These tracks also fit

12 other machines take the 45NX's primary size (400x72.5x72):

IHI track size chart: every model →

Before you order

Width, pitch, and link count must all match — measure your current tracks to confirm, and check your operator's manual for serial-number-specific variations.

Data verified 2026-10-01; aftermarket cross-reference sizes, independently corroborated across two sources.

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