PC300 Excavator Track Roller Heavy-Duty Undercarriage Parts fit Komatsu
Durable and OEM-compatible track roller designed for Komatsu PC300 excavators. Made from high-strength alloy steel with enhanced surface hardening for extended wear life and field reliability.
| 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 track roller—also known as the bottom roller—is essential in distributing the weight of the Komatsu PC300 excavator across the entire undercarriage system. It provides lower track support, stabilizes machine movement, and ensures smooth chain motion during operations such as digging, climbing, and traveling.
Its ability to absorb ground shocks reduces vibrations and prolongs the service life of both the track system and the entire machine.
Track Roller Materials Used and Manufacturing Craftsmanship
Our PC300 track rollers are forged from premium-grade 50Mn or 40MnB alloy steel, chosen for its excellent toughness and wear resistance. The roller shell undergoes precision machining and deep quenching heat treatment to achieve a hardened surface (HRC 52–58) while maintaining a ductile core to resist impact fractures.
Manufacturing Process Description
We follow a standardized production process to ensure consistent quality and fitment across all PC300 track rollers. Each unit is manufactured under strict supervision—from material selection to final assembly—and must pass dimensional inspection, hardness verification, and leak testing to meet our durability standards. This ensures dependable performance in high-load excavation environments.
Heat Treatment
Machining Process
CNC turning and milling ensure dimensional accuracy
Assembly
Running Test
Simulated load test to verify functionality
Paint Spraying
Anti-rust coating for surface protection
Packing
OEM Undercarriage Parts for Komatsu
Track roller reference part numbers: 207-30-07300, 207-30-00651
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| KOMATSU-PC | PC20 | PC30-5 | PC30-6 | PC30-7 | PC30-8 | PC35 | PC40 | PC45 |
| PC50 | PC55 | PC40-5 | PC40-6 | PC40-7 | PC50 | PC55 | PC60-1 | |
| PC60-3 | PC60-5 | PC60-6 | PC60-7 | PC75 | PC100-1 | PC100-3 | PC100-5 | |
| PC100-6 | PC100-7 | PC120-3 | PC120-5 | PC120-6 | PC120-7 | PC150 | PC200-1 | |
| PC200-3 | PC200-5 | PC200-6 | PC200-7 | PC200-8 | PC220-1 | PC220-3 | PC220-5 | |
| PC220-6 | PC220-7 | PC220-8 | PC200LC-3 | PC200LC-5 | PC200LC-6 | PC200LC-7 | PC200LC-8 | |
| PC240 | PC300-1 | PC300-5 | PC300-6 | PC300-7 | PC300LC | PC300LC-5 | PC300LC-6 | |
| PC300LC-7 | PC360-5 | PC360-6 | PC360-7 | PC360LC-5 | PC360LC-6 | PC360LC-7 | PC360LC-8 | |
| PC400-1 | PC400-3 | PC400-5 | PC400-6 | PC400-7 | PC400LC-1 | PC400LC-3 | PC400LC-5 | |
| PC400LC-6 | PC400LC-7 | PC450-5 | PC450-6 | PC450-7 | PC450LC-5 | PC450LC-6 | PC450LC-7 | |
| PC650 | PC750 | PC800 | PC350 | |||||
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Quality Assurance
Every PC300 bottom roller undergoes a multi-point inspection and dynamic testing process.
We test for:
Surface hardness and depth of hardened layer
Oil seal performance under pressure
Runout tolerance and concentricity
Load-bearing simulation for crack resistance
These steps ensure optimal rotation, long wear life, and zero oil leakage during field use.
Komatsu PC300 Undercarriage Compatibility
This heavy-duty track roller is designed specifically for Komatsu PC300 excavators, delivering reliable performance across demanding terrain. It supports both standard and export configurations and is ideal for equipment rebuilds or OEM replacement projects.
Compatibility Highlights:
- Fits Komatsu PC300 and compatible variants
- Fully interchangeable with original undercarriage components
- Designed for global construction and mining environments
- Custom sizes and sealing options available
Whether you're replacing a single roller or outfitting an entire fleet, this component ensures reliable fitment, long service life, and smooth undercarriage operation.
Maintenance Tips
- Regularly check for oil leakage and replace worn seals promptly
- Maintain proper track tension to reduce roller and chain wear
- Clean the undercarriage regularly to avoid premature corrosion or jamming
- Replace rollers in pairs to ensure balanced track movement
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.
