Durable CAT301.5 Track Bottom Roller for Caterpillar Mini Excavator
High-quality CAT301.5 track roller designed for Caterpillar mini excavators, offering superior wear resistance, precise machining, and reliable performance under various working conditions. Perfect OEM replacement with long service life.
| Material | 50Mn/40MnB |
|---|---|
| Surface Hardness | HRC53-58,deepth: 8-12mm |
| Colors | Black or yellow or customized |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
The CAT301.5 track roller is a key undercarriage component for Caterpillar mini excavators, ensuring smooth track movement and stable ground contact during operation. Designed to handle heavy loads and continuous working cycles, this bottom roller provides strong support to the undercarriage system and minimizes wear on the track chain.
With precise engineering and heat-treated steel construction, our CAT301.5 bottom roller delivers both strength and durability, making it an ideal replacement part for maintenance and aftermarket needs.
Material and Heat Treatment
Each CAT301.5 track roller is manufactured using 45# steel or premium alloy steel, ensuring the required hardness and toughness. After forging and machining, the rollers undergo surface induction quenching to achieve a hardness level of HRC 52–58.
- This process improves wear resistance.
- Prevents premature failure under tough working conditions.
- Ensures longer service life compared to non-treated rollers.
The roller shells, shafts, and bushings are all manufactured under strict material selection standards to provide optimal balance between strength and flexibility.
Manufacturing Process
Our CAT301.5 track rollers are produced following advanced undercarriage part manufacturing standards:
Heat Treatment
The roller shells and shafts undergo induction quenching and tempering to achieve a surface hardness of HRC 52–58. This process improves wear resistance and ensures the roller can withstand heavy loads and abrasive working conditions without cracking or premature failure.
Machining Process
Using CNC precision machining, all roller parts are processed to meet strict dimensional tolerances. This ensures perfect concentricity, smooth rotation, and reliable performance when installed on Caterpillar 301.5 mini excavators.
Assembly
During assembly, the roller body, shaft, bushing, and seals are precisely fitted together. We use floating seals and high-grade lubricants to guarantee long-term sealing performance and smooth operation under continuous workloads.
Running Test
Each assembled roller undergoes a dynamic running test to check rotation smoothness, seal performance, and lubrication condition. This step ensures zero oil leakage and confirms that every roller meets OEM quality standards before leaving the factory.
Paint Spraying
After testing, the rollers are coated with anti-rust paint using a professional spraying process. The protective coating prevents corrosion during storage and transportation while giving the product a clean and professional finish.
Packing
Finally, the finished CAT301.5 track rollers are carefully packed in strong wooden cases or palletized crates. Each package is labeled for easy identification and secure transport, ensuring the rollers arrive at your site in perfect condition, ready for installation.
Compatibility & OEM Fitment
The CAT301.5 track roller is specifically designed for:
- Caterpillar 301.5 mini excavators
- Variants with compatible undercarriage specifications
If you have an OEM reference number or casting code, our team can confirm compatibility to ensure a perfect fit.
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| CATERPILLAR-CAT | CAT55 | CAT225 | CAT245 | CAT311 | CAT312 | CAT312B | CAT315 | CAT320 |
| CAT320B | CAT320C | CAT320D | CAT320L | CAT322 | CAT324 | CAT325 | CAT325B | |
| CAT325BL | CAT330 | CAT330B | CAT330BL | CAT330C | CAT330D | CAT345 | CAT345B | |
| CAT973 | E55 | E70 | E70B | E120 | E120-1 | E120B | E140 | |
| E200B | E200-5 | E215 | E240 | E300B | E300L | E311 | E312 | |
| E312B | E320 | E320BL | E320C | E320D | E320DL | E320L | E320S | |
| E322B | E322C | E324 | E324D | E324DL | E325 | E325B | E325L | |
| E329DL | E330 | E330B | E330C | E330D | E330DL | E345 | E345B | |
| E450 | CAT301.5 | CAT302.5 | CAT303.5 | CAT305 | CAT307 | CAT308 | CAT313 | |
| CAT316 | CAT318 | CAT320E | CAT320GC | CAT323 | CAT326 | CAT329 | CAT336 | |
| CAT340 | CAT349 | CAT350 | CAT365 | CAT374 | CAT375 | CAT385 | CAT385CL | |
| CAT390 | CAT390D | CAT390DL | CAT390FL | CAT395 | CAT6015 | CAT6015B | CAT6015D | |
| CAT6020 | CAT6020B | CAT6030 | CAT6030B | CAT6030D | CAT6040 | CAT6040B | ||
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Quality Control
We adopt 100% quality inspection before delivery, including hardness testing, concentricity checks, and oil-seal leakage tests. This ensures that each CAT301.5 track roller meets or exceeds OEM performance standards.
Advantages of Our CAT301.5 Track Roller
- OEM standard fitment – easy installation and replacement.
- Long-lasting service life thanks to heat treatment.
- High-strength seals prevent leakage and protect internal lubrication.
- Excellent cost-performance ratio for dealers and end-users.
Maintenance Tips
To maximize the life of your CAT301.5 bottom roller:
- Regularly check for oil leakage around seals.
- Avoid prolonged work in rocky or uneven ground without proper inspection.
- Maintain correct track tension to reduce stress on rollers.
- Replace rollers in pairs or full sets when wear is excessive.
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
