Place of Origin:
China
Brand Name:
CAT
Model Number:
303 303CR 303CCR
Excavator Undercarriage Parts Rubber Track Sprocket Idler Top Roller Bottom Roller for CAT
Maintain the reliability and performance of your compact excavator with this complete undercarriage parts kit, engineered for Cat 303, 303CR, and 303CCR models. This comprehensive set includes idlers, sprockets, top rollers, bottom rollers, and rubber track components, all precision-machined to OEM specifications. Designed for durability in landscaping, construction, and utility work, these parts deliver smooth track operation and extended service life.
| Item | Specification |
|---|---|
| Compatible Models | CAT303, 303CR, 303CCR Mini Excavator |
| Product Type | Undercarriage Parts (Rubber Track, Sprocket, Idler, Top/Carrier Roller, Bottom/Track Roller) |
| Function | Supports the excavator body, guides the track, and transmits power for movement |
| Rubber Track | Standard size for CAT 303 series, reinforced rubber with steel cords, anti-abrasion, anti-tear |
| Sprocket | Heat-treated steel, high wear resistance, matches track pitch perfectly |
| Idler | Forged steel body, sealed bearings, maintains track tension and alignment |
| Top/Carrier Roller | Sealed and lubricated design, supports the upper track section |
| Bottom/Track Roller | Heavy-duty forged steel body, double-sealed bearings, supports the machine weight on the track |
| Surface Treatment | Heat treatment + anti-corrosion coating for long service life |
| Condition | New / Aftermarket Replacement |
| Application Scenarios | Mini excavator undercarriage repair, construction machinery maintenance, landscaping equipment parts replacement |
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