Enhancing Excavator Performance: A Comprehensive Guide to EX100 Undercarriage Parts

Dec 21, 2023 | News

The EX100 excavator by Hitachi is a widely recognized and reliable machine in the construction and mining industry. The performance and longevity of this excavator greatly depend on its undercarriage parts for excavators. We will explore the various undercarriage parts for the EX100 model, including ex100 track rollers, ex100 bottom rollers, buckets, ex100 carrier rollers, front idlers, excavator sprocket, track chains, track groups, track links and ex100 upper rollers. By understanding the importance and functionality of each component, equipment owners and operators can make informed decisions about maintenance, replacement, and optimizing the performance of their EX100 excavators.

Track Rollers and Bottom Rollers

Track rollers and bottom rollers are vital components of the EX100 excavator’s undercarriage system. These rollers support the weight of the machine and provide stability and smooth movement. Here are key points to understand about track rollers and bottom rollers:

  • Track Rollers: These rollers are positioned on the track frame and help distribute the weight of the excavator across the excavator track link. They enable the tracks to move smoothly over various terrains and reduce the wear and tear on the undercarriage system.
  • Bottom Rollers: Located closer to the ground, bottom rollers further stabilize the excavator and assist in weight distribution. They play a crucial role in maintaining proper track tension and preventing excessive track sag.


The ex100 bucket is an essential attachment for the EX100 excavator, enabling it to perform a wide range of excavation and material handling tasks. Here are key points to understand about the bucket:

  • Functionality: The bucket is designed to scoop, lift, and transport materials such as soil, rocks, and debris. It comes in various sizes and configurations, allowing operators to adapt to different job requirements.
  • Durability and Strength: A high-quality bucket for the EX100 excavator is constructed from durable materials with reinforced edges to withstand the rigors of heavy-duty excavation tasks.
  • Bucket Teeth and Blade: The bucket is equipped with replaceable teeth and a cutting edge blade that enhance digging and material penetration capabilities, improving overall productivity.

Carrier Rollers and Front Idlers

Carrier rollers and ex100 front idlers are critical components that contribute to the smooth operation and stability of the EX100 excavator. Here are key points to understand about carrier rollers and front idlers:

  • Carrier Rollers: Positioned on the excavator’s undercarriage frame, carrier rollers support the weight of the upper structure and distribute it across the track links. They help maintain track tension and ensure proper track alignment.
  • Front Excavator Idlers: Front ex100 idlers are located at the front of the undercarriage and guide the track chain’s movement. They support the weight of the excavator and provide tension to the track system, ensuring optimal traction and maneuverability.
  1. Sprockets and Track Chains (100 words):
    Sprockets and track chains are integral parts of the EX100 excavator’s undercarriage system that enable efficient power transmission and track movement. Here are key points to understand about ex100 sprockets and track chains:
  • Sprockets: Sprockets are toothed wheels that engage with the ex100 track links, driving the motion of the tracks. They transfer power from the excavator’s engine to the undercarriage system, enabling smooth movement and traction.
  • Track Chains: The track chain consists of interconnected links that wrap around the sprockets and excavator track roller. It provides a continuous track surface for the excavator, facilitating movement across different terrains.

Track Groups and Track Links

Track groups and track excavator links are crucial components that ensure the durability and longevity of the EX100 excavator’s undercarriage system. Here are key points to understand about track groups and track links:

  • Track Groups: A track group comprises all the components necessary for the complete replacement of the track system. It includes ex100 track chains, track rollers, sprockets, and front idlers. Replacing the entire ex100 track group ensures optimal performance and longevity.
  • Track Links: Track links are the individual segments that make up the track chain. They are designed to withstand heavy loads, provide flexibility, and resist wear and tear during operation.

Upper Rollers

Upper rollers, also known as top rollers or excavator carrier roller, are critical components that support the weight of the excavator’s upper structure and provide stability. Here are key points to understand about upper rollers:

  • Functionality: Upper rollers are positioned on the excavator’s undercarriage frame above the track rollers. They assist in weight distribution, maintain track tension, and promote smooth track movement.
  • Durability and Maintenance: High-quality upper rollers are constructed from durable materials to withstand heavy loads and extended use. Regular inspection and lubrication are essential to ensure their optimal performance and longevity.