
20Y-30-00016 Bottom Track Roller for Komatsu PC200-7
Replacement lower track roller for the PC200-7 undercarriage, with roller-body, shaft and seal-group assembly.
Excavator Undercarriage Parts: Track & Carrier Rollers
The Huanball 320×86×52 track is a C-lug replacement for Bobcat T650 track-loader applications. The three dimensions describe 320 mm width, 86 mm drive pitch and 52 links. Rubber compound, steel cores and reinforcing wire form the track; the inner drive and guide profile works with the sprocket, rollers and idlers.
| Model / part number | 320×86×52 C-lug |
|---|---|
| Track size | 320 × 86 × 52 |
| Width | 320 mm |
| Pitch | 86 mm |
| Links | 52 |
| Tread | C-lug |
| Supplied brand | Huanball |
| Construction | Rubber compounds, alloy-steel cores and wire rope |
| Machine entry | Bobcat T650 |
| Order unit | One track |
| Two-side replacement | Two tracks |
320×86×52 means 320 mm across the tread, 86 mm between consecutive drive positions and 52 links around the loop. The pitch and link count together give a nominal 4,472 mm pitch length. Width is a separate dimension.
| Field | This track |
|---|---|
| Width | 320 mm |
| Pitch | 86 mm |
| Link count | 52 |
| Pitch length | 86 × 52 = 4472 mm |
The C-lug configuration has staggered C-shaped tread blocks. Block tread and multi-bar patterns change the ground-contact tread. Keep tread form, construction and dimensions together in a comparison, so a same-sized track with another tread is not packed as the same variant.
A 450 mm track is 130 mm wider than a 320 mm track. At the same loaded contact length it offers about 40.6% more contact area per track. The machine’s installed undercarriage and clearance define the width choice.
| Product | Width | Pitch / links | Order unit |
|---|---|---|---|
| 320×86×52 C-lug | 320 mm | 86 mm / 52 | One track |
| 450×86×52 C-lug | 450 mm | 86 mm / 52 | One track |
A track replacement can travel with sprockets, rollers or idlers on a consolidated order. Keep each rolling component’s installed number and quantity as a separate line. A matched pair uses two tracks; a single-side repair uses one.
| Product | Machine | Position | Role |
|---|---|---|---|
| 20Y-30-00016 | PC200-7 | Below track frame | Supports the lower chain run |
| 22U-30-00021 | PC200-7 | Above track frame | Supports the returning upper chain |
It is the 86 mm drive pitch, measured between adjacent drive positions. The final number 52 counts the links in the loop.
The catalog unit is one track. A complete left/right pair is a quantity of two.
They are different tread configurations. Keep the pattern with the size and construction on the purchase line.
A matched replacement pair uses the same size and tread configuration on both sides. List a single-side repair separately from a matched-pair order.

Replacement lower track roller for the PC200-7 undercarriage, with roller-body, shaft and seal-group assembly.

Dingtai KM3542 carrier roller for the upper track run, associated with 22U-30-00020 / 22U-30-00021.

450 × 86 × 52 C-lug replacement track for Bobcat T650. One track per order unit.
Send your machine model, required quantity and destination. Add installation items, wear parts and service quantities to the same inquiry.