Undercarriage Parts Sprocket for Komatsu PC120-5
Engineered for Komatsu PC120-5 excavators, this drive sprocket ensures efficient power transmission and precise track engagement. Made from high-strength alloy steel with heat-treated teeth for extended wear life in tough working conditions.
| 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.
Precision-Forged Komatsu PC120-5 Sprocket
This sprocket is specifically designed for Komatsu PC120-5 excavators, ensuring optimal fit and torque transfer across heavy-duty applications. Its tooth profile is carefully engineered to mesh perfectly with the track link, providing efficient power transmission and longer undercarriage life.
High-Quality Steel and Advanced Heat Treatment
The sprocket is made from premium-grade alloy steel such as 35Mn or 40Mn, known for its excellent hardness and wear resistance. After forging, it undergoes quenching and tempering heat treatment to reach optimal surface hardness (HRC 52-58) while maintaining a tough inner core. This combination ensures resistance to abrasion, chipping, and deformation under continuous stress.
Manufacturing Process Summary for PC120-5 Sprocket
Our production process integrates precision CNC machining, gear hobbing, tooth grinding, and strict quality control to guarantee reliable performance and dimensional accuracy.
Tooth Rough Machining
The sprocket blank is machined on a CNC lathe or gear hobbing machine to form the basic tooth profile.
Inner Ring Installation & Precision Machining
The inner ring is inserted and the entire part is precisely machined to ensure concentricity and dimensional accuracy.
Drilling
Mounting and lubrication holes are drilled to meet the installation and functional requirements.
Tooth Grinding & Finishing
After heat treatment, the sprocket teeth are ground or polished to remove burrs and ensure smooth engagement.
Surface Cleaning
The sprocket undergoes surface cleaning, removing scale and residue, preparing it for surface treatment.
Painting & Final Coating
The sprocket is coated with durable industrial paint (available in various colors), providing corrosion resistance and a clean, professional appearance.
Each sprocket undergoes rough tooth shaping, inner ring machining, drilling, finishing treatment, and painting. These steps ensure a smooth tooth profile, precise alignment, and strong anti-corrosion protection—resulting in a ready-to-install product built for endurance.
OEM Undercarriage Parts for Komatsu
| 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.
Strict Dimensional and Quality Inspection
Every PC120-5 sprocket is tested for concentricity, tooth spacing, hardness distribution, and surface finish. This rigorous inspection ensures consistent quality that meets or exceeds OEM standards. Our factory also performs dynamic fit testing with actual chains to verify performance under real-world conditions.
Compatible Komatsu Models
This sprocket is fully compatible with:
Komatsu PC120-5 / PC120-6 / PC120LC-6
Other models with similar undercarriage structure and frame mounting dimensions
Please verify fitment by serial number or request drawing confirmation before purchase
Application Scenarios in Harsh Working Conditions
Ideal for construction sites, urban foundation excavation, and light to medium quarry work. The PC120-5 sprocket’s hardened teeth and structural integrity make it suitable for long-term operation in dirt, rock, and gravel environments without frequent replacements.
Maintenance Tips for Longer Service Life
To maximize the lifespan of your drive sprocket:
- Regularly inspect tooth wear and pitch alignment with the track links.
- Keep the undercarriage clean to prevent mud or gravel accumulation.
- Lubricate related components and ensure proper track tension.
- Replace worn chains in time to prevent accelerated sprocket damage.
Installation and Maintenance Best Practices
Proper installation and maintenance are key to maximizing sprocket life:
- Clean the hub area before installation
- Ensure correct bolt torque to avoid misalignment
- Check chain tension periodically
- Replace worn track links in time to avoid premature sprocket damage
Following these guidelines helps avoid excessive noise, uneven wear, or tooth skipping during operation.
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.
