Undercarriage & wear parts · aftermarket
We supply aftermarket bucket teeth, track rollers, front idlers, sprockets, track shoes and cutting edges for excavators and wheel loaders. Before you order, measure the parts you have. Most wrong shipments trace back to an unmeasured pin or an unconfirmed part number.
We are an export trading partner, not a manufacturer. Parts are sourced from specialist factories in Shandong and Fujian.
Three dimensions decide whether a tooth fits. Measure all three as worn-part values, then compare with the new part drawing — not with the worn part.
Worn teeth read small in every dimension. If your part is more than roughly a third worn in any direction, measure a near-new one or take dimensions from the drawing supplied with the machine.
Check pin diameter, opening width and whether the tooth is pinned or pinless. Teeth are a high-wear consumable — in granite or hard rock, service life can be measured in tens of working hours, so repeating the same part number matters.
Measure shaft diameter, roller outside diameter, overall width and mounting flange spacing. Housing style (press-fit or bolt-on) must be confirmed separately.
Measure rim diameter, shaft diameter and mounting flange. Idlers are commonly supplied with the shaft assembly or bare — state which you need.
Count teeth, identify sprocket type and note whether it is segmented. Never substitute a sprocket with a different tooth count: the chain pitch must match.
Measure shoe width, thickness and the number and spacing of bolt holes. Triple-grouser or single-rouser and the wibbing pattern both affect fit and traction.
Measure width, thickness, bolt hole count and spacing. Loader and excavator bucket edges are usually model-specific rather than generic.
Why the model name is not enough, and what identifies the part.
Serial prefix and casting mark: what actually identifies the variant.
Why it is usually the adjuster seal, not a stretched chain.
How to measure sag, and why over-tension wears rollers faster than use.
We do not quote a part on the strength of the machine name alone. Send us:
With those we cross-check the casting number and the machine serial range, and tell you the part number and the fitment basis before any price is discussed. If we cannot confirm it, we say so — an unconfirmed part is not worth shipping.
How to measure a worn bore, and why a worn tooth always measures small.
When a roller is due, and why a leaking roller is more urgent than a worn one.
The three numbers on a part, and how to photograph the one that matters.
Measure the bolt pattern, not the width — the reason edges get returned.
Two failure patterns cause most wrong shipments:
A photo of the casting mark resolves both faster than any textual description.
Machine brand names and part numbers are used in this guide only to describe fitment and application. We are not an authorised dealer of any machine manufacturer. We do not use manufacturer logos, and we do not describe our parts as genuine, OEM or original. Any reference such as “fits Komatsu PC200” is a statement of compatibility, not of origin.
Reviewed by Zhonglei M&E parts desk — export trading partner for undercarriage and wear parts. Last updated 2026-11-13.