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PC Komatsu Bottom Roller
KOMATSU Series
PC60/PC100/PC120/PC150
PC200/PC200-6/PC300-5/PC400-3/5
PC450-6/PC650/PC750/PC800/PC850/PC1250-8
Business Philosophy
♦ 100% quality assurance, development and manufacturing follow original ones;
♦ One-to-one products factory. Ensure the best quality;
♦ Reasonable inventory and timely delivery;
♦ Rapid response within 24 hours ;
♦ Long-term strong and stable supply capacity;
♦ Goods will Be packed safely and carefully;
♦ The first-class logistics to Ensure the safe arrival of your goods;
♦ Excellent After-sales service. Track usage. Positive feedback response;
More Product Models
Suitable for excavator undercarriage components | ||||
KOMATSU | CATERPILLAR | HITACHI | SUMITOMO | KOBELCO |
PC100 | E180 | EX60 | SH120 | SK100 |
PC120 | CAT215 | EX100 | SH200 | SK120 |
PC150 | CAT215DLC | EX120 | SH260 | SK200 |
PC200 | CAT235 | EX200 | SH280 | SK200-5 |
PC200-6 | E240 | EX270 | SH340 | SK220 |
PC300-5 | E200B | EX300 | SH300 | SK250 |
PC400-3/5 | E320 | EX400 | DAEWOO | SK270 |
PC450-6 | CAT312 | EX450 | DH180 | SK330-6 |
PC650 | CAT315L | EX1100 | DH220 | SK480 |
PC750 | CAT318BL | EX1200 | DH280 | SK850 |
PC800 | E325 | ZX110 | DH330 | VOLVO |
PC850 | E330 | ZX200 | DH450 | EC210 |
PC1250-8 | E345 | ZX240 | KATO | EC240 |
HYUNDAI | E349 | ZX330 | HD400 | EC290 |
R200 | E450 | ZX350-5G | HD700 | EC300D |
R210 | E374 | ZX870-5 | HD770 | EC700 |
R220 | E385 | HD800 | ||
R290 | E390 | HD820 | ||
R320 | HD1250 | |||
R480 | ||||
The KOMATSU Series Track Roller is a replacement undercarriage component for compatible Komatsu crawler excavators. Installed along the lower track frame, the track roller supports the machine's weight and maintains rolling contact with the track chain as the excavator travels across construction sites, earthmoving areas and other working environments.
Guangzhou Zhonghai Jiuchuan Machinery Equipment Co., Ltd. supplies model-specific excavator undercarriage components for replacement and aftermarket purchasing. This product listing covers selected Komatsu PC Series applications, including PC60, PC100, PC120, PC150, PC200, PC300-5 and other listed models. Since roller dimensions and mounting configurations can differ between machine versions, buyers should verify the applicable part number and installation specifications before ordering.
For construction machinery parts distributors, equipment maintenance teams and repair workshops, confirming the correct track roller helps reduce fitment errors and simplifies spare parts procurement. Browse the model references below to identify your application, or visit our Excavator Bottom Rollers category for additional machine-specific options.
The current product listing references multiple Komatsu PC Series excavator models. Use the following model groups as an initial reference when identifying the required track roller.
| Model Group | Listed Excavator Models | Key Verification Requirements |
|---|---|---|
| Compact and Smaller PC Series | PC60, PC100, PC120, PC150 | Confirm the complete machine designation, original part number and mounting dimensions. |
| PC200 Series | PC200, PC200-6 | Verify the machine version, roller configuration and original equipment reference. |
| PC300 and PC400 Series | PC300-5, PC400-3/5 | Check the applicable track frame dimensions, roller profile and installation requirements. |
| Larger PC Series | PC450-6, PC650, PC750, PC800, PC850, PC1250-8 | Confirm the exact model application, part reference and required replacement configuration. |
Important: These are model references shown in the product listing, not a guarantee that one identical roller fits every model. Each application must be checked against the relevant parts catalog, machine serial number and technical specifications before an order is confirmed.
Choosing a replacement track roller requires more than matching the Komatsu brand or excavator model family. The roller must match the machine's original undercarriage configuration and provide the correct mounting and running interfaces.
Start with the complete excavator model designation and serial number, where available. Check the original equipment parts catalog or existing component markings to identify the applicable track roller reference.
This is especially important when sourcing rollers for PC200, PC300 or other model families with multiple production versions. A shared model family does not necessarily mean the same roller can be used across every version.
Compare the replacement roller with the original component using verified measurements or technical drawings. Depending on the design, important identification dimensions may include:
Overall roller width and outer diameter.
Mounting-hole spacing and installation dimensions.
Shaft configuration and mounting interface.
Flange arrangement and running-surface profile.
Clearance between the roller and the track frame.
These dimensions should be confirmed against the applicable machine specification. Measurements from a worn component may differ from its original dimensions, so the parts catalog or verified technical drawing should take priority where available.
Track rollers may use different flange configurations according to the undercarriage design. The flange profile helps guide the track chain and maintain the intended running alignment.
Before purchasing a KOMATSU Series Track Roller, compare the original roller's flange arrangement, contact profile and overall dimensions. Do not substitute a different configuration solely because its outer appearance is similar.
The internal shaft, bearing and sealing arrangement also influence roller suitability. Sealing systems help protect internal components from dirt, moisture and other contaminants encountered during excavator operation.
If the original construction is unclear, provide the existing part number, clear photographs or a technical drawing for further identification. Internal design and lubrication arrangements should be verified rather than assumed from external appearance.
A track roller operates as part of a complete crawler undercarriage. Its compatibility with the track chain, track frame, drive sprocket and front idler is important for correct installation and consistent component engagement.
The bottom track roller supports the lower section of the track chain as the excavator moves. Check the running surfaces for uneven wear and confirm that the replacement roller matches the required track system configuration.
If the track chain also requires replacement, explore our Steel Track Chains range to review additional model-specific options.
The drive sprocket engages with the track chain to transfer driving force, while the front idler guides the track along its running path. Excessive wear in either component may contribute to abnormal chain movement and uneven undercarriage wear.
Inspect these components during roller replacement to identify potential wear-related problems before installing the new part.
Damaged mounting points, loose fasteners or alignment issues can affect roller installation. Before fitting a replacement, verify the mounting dimensions and inspect the track frame for visible damage or deformation.
For a wider range of compatible crawler components, visit our Excavator Undercarriage Parts section.
Track rollers experience repeated loading and rolling contact throughout excavator operation. Ground conditions, operating practices, track adjustment and the condition of adjoining components can influence their wear patterns.
During undercarriage maintenance, pay attention to the following warning signs:
Uneven running-surface wear: May indicate abnormal contact, misalignment or wear elsewhere in the undercarriage.
Abnormal rotation or noise: May indicate internal wear, damage or a lubrication-related problem.
Cracks or deformation: Require further inspection to determine whether the component remains serviceable.
Lubricant leakage: May indicate a sealing problem, depending on the roller design.
Repeated undercarriage wear: May warrant checking the track chain, sprocket, idler and track adjustment together.
Replacement decisions should be based on the actual component condition and the applicable equipment manufacturer's service limits. Inspecting related components can help identify the cause of premature wear and determine whether additional maintenance is necessary.
For construction machinery parts distributors, repair workshops, equipment dealers and fleet maintenance teams, accurate component identification is important for purchasing efficiency and inventory planning. When sourcing Komatsu track rollers for multiple excavator models, confirming the part reference for each application helps reduce specification discrepancies.
When requesting a quotation, prepare the following information where available:
Complete excavator model and serial number.
Original OEM part number or existing supplier reference.
Required quantity and intended replacement scope.
Roller dimensions, flange configuration and mounting details.
Photographs of the existing roller and its installation position.
Technical drawings or parts catalog references, where available.
Destination country and shipping requirements.
For mixed-model orders, a model-by-model purchasing list containing the confirmed part numbers and quantities can help streamline quotation preparation. Maintaining these records also supports more consistent spare parts replenishment for repeat customers.
Guangzhou Zhonghai Jiuchuan Machinery Equipment Co., Ltd. supplies construction machinery parts to overseas markets, with services covering product selection, supply coordination, export logistics and after-sales communication. For buyers sourcing KOMATSU Series Track Rollers, the company emphasizes the following service priorities.
The company emphasizes quality assurance and product development and manufacturing aligned with original equipment references. Providing the machine model, original part number and relevant dimensions helps establish the correct replacement requirements before an order is confirmed.
Inventory management and timely delivery are part of the company's stated service commitments. Buyers can confirm the required model, quantity and availability during the quotation process, helping coordinate spare parts purchases and maintenance planning.
The company's stated service policy includes responding to customer inquiries within 24 hours. Supplying complete technical and purchasing information helps clarify fitment questions and supports more efficient communication.
Safe packaging and logistics coordination are also part of the company's stated commitments. Buyers can discuss destination, shipment requirements and order details in advance to help coordinate international delivery.
The company identifies after-sales service, product usage follow-up and customer feedback response as service priorities. This provides a communication channel for buyers who need to discuss product-related questions after delivery.
The listing references PC60, PC100, PC120, PC150, PC200, PC200-6, PC300-5, PC400-3/5, PC450-6, PC650, PC750, PC800, PC850 and PC1250-8. Confirm the exact application and required part number for your specific machine before ordering.
No. The listed models represent different machine applications, and their track roller dimensions, mounting configurations and other specifications may differ. Verify compatibility against the original part reference and the machine's technical documentation.
Provide the complete excavator model, serial number if available, photographs of the existing roller and any known dimensions. These details can help with product identification, although final compatibility should be confirmed before ordering.
A bottom roller supports the lower track chain and carries the load transmitted through the undercarriage. A top roller, also called a carrier roller, supports the upper return section of the track chain. Their positions, functions and mounting requirements differ, so they should not be treated as interchangeable.
Yes. Provide a list of the machine models, serial numbers where available, original part references and required quantities. A model-by-model list helps clarify the required roller configurations and supports quotation preparation.
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