Mini Excavator Rubber Tracks
KBL PC12UU-2E Rubber Tracks —250×52.5×76 Pair
Two-track replacement set for Komatsu PC12UU-2E, 250 mm width, 52.5 mm pitch and 76 links per belt.
KBL D-PC12UU-2E-0741N
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Mini Excavator Rubber Tracks
Compare width, pitch, link count and inner-guide configuration for actual PC12UU-2E and Kubota mini-excavator track purchases.
2 products
Mini Excavator Rubber Tracks
Huanball HB637 Rubber Track —350×54.5×86 for Kubota KX040-4 / KX121-3
Huanball replacement belt for the 350×54.5×86 Kubota configuration, with rubber, alloy-steel cores and reinforcing cord.
Huanball HB637 / 350×54.5×86
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Send a sourcing requestMini Excavator Rubber Track Sizes and Order Units
PC12UU-2E and the KX040-4 / KX121-3 configurations use different widths, drive pitches and counts. The KBL purchase below is a pair; the Huanball purchase unit is one belt.
| Product | Machine | Width×pitch×links | Purchase unit |
|---|---|---|---|
| KBL D-PC12UU-2E-0741N | Komatsu PC12UU-2E | 250×52.5×76 | Two-track set |
| Huanball HB637 / 350×54.5×86 | Kubota KX040-4 / KX121-3 / 3S / 3ST | 350×54.5×86 | One belt; two for a pair |
The Kubota generation changes the track number
The KX121-2 / 2S entry uses 350×84×56, while the KX121-3 / 3S / 3ST entry uses 350×54.5×86. A 350 mm width appears in both generations, but the pitch and count describe different belts.
| Machine | Original number | Width×pitch×links |
|---|---|---|
| KX121-2 / 2S | RD101-22314 | 350×84×56 |
| KX121-3 / 3S / 3ST | RD118-22310 | 350×54.5×86 |
| KX040-4 | RD158-22310 | 350×54.5×86 |
| KX080-3MC | RD81922322 spiral / RD81922312 overlap | 450×81×76 |
Keep the inner guide and drive form with the size
The inside steel cores contact the drive sprocket and form the roller/guide path. Width, pitch and count describe the belt’s nominal size; the inner profile identifies another part of the installation. Camso 6535B carries its own V1/J/WA-R fit code. UltraTrack’s KX080-3 offer distinguishes N-guide and W-guide products at 450×81×76.
| Named product | Size | Guide / configuration |
|---|---|---|
| Camso 6535B | 350×54.5×86 | V1 tread; J / WA-R fit code |
| UltraTrack KX080-3 Block / N tread | 450×81×76 | N guide —narrow |
| UltraTrack KX080-3 Demolition tread | 450×81×76 | W guide —wide |
One nominal size can have a serial split
The U27-4 original track list uses RB511-22312 through serial40713 and RG26822310 from40714. Both rows give300×53×80. Keep the serial and original part number beside the belt marking and inner-profile photograph.
| Machine serial | Original number | Nominal size |
|---|---|---|
| Up to40713 | RB511-22312 | 300×53×80 |
| 40714 onward | RG26822310 | 300×53×80 |
Build a belt order and a separate running-gear repair list
Specify one belt or a pair, then add each fitted sprocket, lower roller, idler and tensioning component by its number and quantity. Keep bare-belt mass and packed shipment weight as separate freight fields.