What does K mean for rubber tracks on mini excavators and excavators?

Expert Answer

K usually identifies a rubber track version with an outside-guided running surface, so the track and roller guidance are matched differently than on a standard N or W type. In practice, it is a fitment code, not a size code: the basic dimensions still come from the width, pitch, and number of links.

That is why you should never order by the letter alone. Two tracks with the same size can still have different guidance designs, and the wrong suffix can cause poor tracking, unusual wear, or the chain coming off more easily. Check the full marking on the old track, then compare the machine model, measured dimensions, and the end letter together.

Common rubber-track markings use letters to show the construction or guidance style. K is often used for tracks with reinforced side guidance elements and outside-guided rollers; other letters such as N, W, Y, or B may indicate different guidance layouts or machine-specific versions. If the marking is unclear, measure the track width, pitch, and link count on the removed chain and inspect how the rollers engage the track body.

VANROCK supplies rubber tracks through an appointed dealer network and quotes pricing on request. If you are matching a replacement for a specific machine, the safest approach is to confirm the full code before ordering. VANROCK is an independent manufacturer and is not affiliated with any OEM brand.

Answered by VANROCK specialists · Published 9/2/2026