Hitachi EX Series Tracked Excavator Track roller EX40/EX60/EX100/EX120/EX200

Hitachi EX Series Tracked Excavator Track Roller

The Hitachi EX Series Tracked Excavator Track Roller is an undercarriage replacement component designed for model-specific parts sourcing and excavator maintenance. Installed along the lower track frame, the bottom roller supports the machine's weight and provides a rolling contact surface for the track chain as the excavator moves across construction sites, earthmoving areas and other working environments.

Guangzhou Zhonghai Jiuchuan Machinery Equipment Co., Ltd. supplies excavator undercarriage replacement parts for different equipment applications. This product listing covers selected Hitachi EX Series models, including EX40, EX60, EX100, EX120, EX200, EX270, EX300, EX400, EX450, EX1100 and EX1200, as well as selected ZX Series applications.

For machinery parts distributors, repair workshops and fleet maintenance teams, identifying the correct track roller requires more than matching the excavator model family. Original part numbers, machine versions, roller dimensions and mounting configurations should be verified before purchasing. The model references below provide a starting point for identifying the required replacement.

Hitachi Excavator Track Roller Model Applications

The current product listing references the following Hitachi EX and ZX excavator applications. Buyers should confirm the exact machine configuration before treating any listed models as interchangeable.

The model list identifies applications referenced by the product page, not a guarantee that one identical roller fits every listed excavator. Different machine generations and undercarriage configurations may require different replacement components.

How to Identify the Correct Hitachi EX Series Track Roller

Accurate identification helps reduce fitment errors, unnecessary replacement work and purchasing delays. Before ordering a Hitachi EX Series track roller, check the following technical details against the existing component or the applicable equipment parts catalog.

1. Machine Model and Original Part Number

Start with the complete excavator model designation and serial number, where available. Cross-reference the original roller part number with the applicable parts catalog or an approved replacement reference.

This is particularly important when sourcing parts for older EX Series machines or excavators with different production versions. If the original part number is unavailable, provide clear photographs of the existing roller and the machine identification plate to support further product identification.

2. Roller Dimensions and Mounting Configuration

Compare the replacement roller with the original component using verified measurements or technical drawings. Depending on the specific design, important 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 requirements within the track frame.

These dimensions must match the applicable machine specification. A roller that appears similar to the original may still differ in its mounting structure or running profile. Measurements from a worn component should also be checked against the original specification whenever possible.

3. Flange Design and Track Guidance

Track rollers may use different flange arrangements depending on the undercarriage design. The flange profile helps guide the track chain and maintain the intended running alignment.

Before selecting a replacement, verify the original roller's flange configuration, contact surface and mounting structure. Do not substitute a different roller design solely because the external dimensions appear similar.

4. Shaft, Sealing and Internal Construction

The shaft, internal bearing and sealing arrangement are additional considerations when matching replacement track rollers. Sealing systems help protect internal components from dirt, water and other contaminants encountered during excavator operation.

If the original construction is unclear, provide the existing part number, product photographs or a technical drawing for further identification. The internal design and lubrication arrangement should be verified rather than assumed from the external appearance.

Track Roller Compatibility with the Hitachi Undercarriage

A track roller operates as part of the complete crawler undercarriage. Its compatibility with the track chain, track frame, drive sprocket and front idler affects installation and the interaction between adjacent components.

Track Chain Contact and Running Alignment

The bottom track roller supports the lower section of the track chain as the excavator moves. Uneven contact between the roller and track chain can indicate component wear, alignment issues or an incompatible running profile.

When replacing a worn roller, inspect the chain's contact surfaces and confirm that the replacement matches the required undercarriage configuration. If the track chain also needs replacement, explore our Steel Track Chains range for additional model-specific options.

Drive Sprocket and Front Idler Condition

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 these components can contribute to abnormal track movement and uneven undercarriage wear.

Inspect the sprocket and idler when replacing track rollers to identify related problems before installing new components.

Track Frame and Mounting Points

The track frame provides the mounting structure for the rollers. Damaged mounting points, loose fasteners or alignment problems can affect installation and running performance.

Before fitting a replacement, verify the mounting dimensions and inspect the installation area for visible damage or deformation. For additional crawler undercarriage components, visit our Excavator Undercarriage Parts category.

When Should a Hitachi Excavator Track Roller Be Replaced?

Track rollers experience repeated loading and rolling contact throughout excavator operation. Ground conditions, impact loading, track adjustment and the condition of adjacent components can all influence wear.

During maintenance inspections, pay attention to the following conditions:

• Uneven running-surface wear: May indicate abnormal contact, alignment problems 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 parts can help identify the cause of premature wear and determine whether additional maintenance is necessary.

Hitachi Track Rollers for Parts Distributors and Maintenance Buyers

For construction machinery parts distributors, repair workshops, equipment dealers and fleet maintenance teams, accurate component identification supports quotation preparation, purchasing efficiency and spare parts inventory planning.

When requesting a quotation for a Hitachi EX Series tracked excavator track roller, prepare the following information wherever 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 orders covering multiple excavator models, a model-by-model parts list with confirmed part numbers and quantities helps clarify the required configurations. Retaining these records can also simplify repeat purchasing and inventory replenishment.

Why Choose Guangzhou Zhonghai Jiuchuan Machinery Equipment Co., Ltd.?

Guangzhou Zhonghai Jiuchuan Machinery Equipment Co., Ltd. supplies construction machinery parts and emphasizes product quality, supply coordination and customer service. For buyers sourcing Hitachi EX Series track rollers, the company's stated service commitments provide several practical points to consider when arranging replacement parts procurement.

Product Quality and Reference Verification

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 clarify the required replacement specifications before an order is confirmed.

Inventory Coordination and Delivery Support

Reasonable inventory management and timely delivery are part of the company's stated service commitments. Buyers can confirm the required model, quantity, availability and shipping arrangements during the quotation process to support maintenance and inventory planning.

Responsive Customer Communication

The company's stated service policy includes responding to customer inquiries within 24 hours. Providing complete machine information and purchasing requirements helps clarify fitment questions and supports more efficient communication during quotation and order coordination.

Careful Packaging and International Logistics

Safe packaging and logistics coordination are also part of the company's stated commitments. Buyers can discuss destination, shipping requirements and order details in advance to help coordinate the international delivery of excavator undercarriage components.

After-Sales Follow-Up

The company identifies after-sales service, product usage follow-up and customer feedback response as service priorities. These communication channels are relevant for B2B buyers who need to discuss product-related questions after delivery.

Frequently Asked Questions About Hitachi EX Series Track Rollers

Which Hitachi excavator models are referenced in this track roller listing?

The listing references EX40, EX60, EX100, EX120, EX200, EX270, EX300, EX400, EX450, EX1100 and EX1200, along with selected ZX Series models. Confirm the exact application and required part number for your machine before ordering.

Can the same track roller fit all Hitachi EX Series excavators?

No. The listed machines represent different applications, and roller dimensions, mounting configurations and running profiles may vary. Verify the original part reference and technical specifications for the specific excavator.

Is a track roller the same as a track idler?

No. A bottom track roller supports the lower track chain along the track frame, while a front or rear idler guides the track around the end of the undercarriage. These components have different functions and mounting arrangements and should not be treated as interchangeable.

How can I identify a replacement track roller without an OEM part number?

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.

Should I replace the track chain when replacing a track roller?

Not necessarily. The decision depends on the measured wear and condition of the existing components. Inspect the track chain, rollers, sprocket and idler together to determine whether additional maintenance or replacement is required.

Can I request a quotation for multiple Hitachi excavator models?

Yes. Provide a model-by-model list containing the complete machine designations, serial numbers where available, original part references and required quantities. This helps clarify the required configurations and supports quotation preparation.