Deere 870 vs CAT 390: A Comprehensive Comparison

[MikePhua]

When it comes to large-scale construction and excavation projects, choosing the right machine for the job is crucial. Two popular models that come up in discussions are the John Deere 870 and the Caterpillar 390. These two excavators are often compared for their performance, reliability, and features, and both have their respective strengths and weaknesses. This article will break down the key aspects of these two models, helping you make an informed decision on which one might best suit your needs.
Power and Performance

1. Deere 870:
   • The John Deere 870 is equipped with a powerful engine capable of delivering excellent performance in various excavation tasks.
     
   • With its advanced hydraulic system, it provides smooth operation for digging, lifting, and other construction tasks.
     
   • The machine is designed for long workdays and harsh environments, with a solid reputation for fuel efficiency and power delivery.
     
2. CAT 390:
   • The CAT 390 is a powerhouse in the industry, boasting impressive hydraulic power and lifting capacity.
     
   • This model offers superior digging forces, which makes it suitable for heavy-duty tasks like quarrying and large-scale earthworks.
     
   • The CAT 390 is known for its strength and endurance, even in tough conditions. Its engine is optimized for both power and fuel efficiency, making it a reliable choice for large projects.
     

Size and Build Quality

1. Deere 870:
   • The Deere 870 is a mid-range excavator, providing a balance between power and maneuverability.
     
   • Its build quality is robust, ensuring durability and longevity even in the most demanding jobs.
     
   • However, it is slightly smaller than the CAT 390, which may impact its performance in some heavy-duty tasks like large-scale excavations.
     
2. CAT 390:
   • The CAT 390 is a larger machine, designed for more demanding projects requiring superior lifting capacities and longer reach.
     
   • The machine’s construction is heavy-duty, ensuring excellent stability and longevity.
     
   • Its size, while offering increased power, can also make it less maneuverable in tighter spaces compared to the Deere 870.
     

Hydraulic System and Efficiency

1. Deere 870:
   • The hydraulic system in the Deere 870 is optimized for efficiency, allowing for smooth and precise control of attachments.
     
   • It performs exceptionally well in general excavation work, providing power and precision when needed.
     
   • The machine’s hydraulic efficiency is complemented by its fuel economy, which helps reduce overall operational costs over time.
     
2. CAT 390:
   • The CAT 390 excels in hydraulic performance, providing high force and smooth control, which makes it ideal for large, demanding tasks.
     
   • The system’s response time is fast, offering better performance in heavy lifting and digging applications.
     
   • However, its larger engine and hydraulic power do come at the cost of slightly higher fuel consumption compared to the Deere 870.
     

Operator Comfort and Technology

1. Deere 870:
   • The Deere 870 is equipped with a modern operator cabin that prioritizes comfort and ergonomics.
     
   • The cabin is spacious, and the controls are intuitive, ensuring that the operator can work efficiently throughout long hours.
     
   • It also features advanced monitoring systems to track machine performance, offering valuable insights to enhance productivity.
     
2. CAT 390:
   • The CAT 390 features an advanced cabin with state-of-the-art technology aimed at improving operator comfort and ease of use.
     
   • The cabin provides excellent visibility, and the controls are designed for precision and minimal fatigue.
     
   • Its tech features include customizable settings, a user-friendly interface, and advanced monitoring systems for maintenance tracking.
     

Maintenance and Durability

1. Deere 870:
   • The Deere 870 is known for its durability and easy-to-maintain design.
     
   • It is built with high-quality materials that ensure a long lifespan, even in tough working conditions.
     
   • Routine maintenance is straightforward, with accessible components that simplify servicing and reduce downtime.
     
2. CAT 390:
   • The CAT 390 is renowned for its ruggedness and ability to withstand demanding tasks.
     
   • It’s built to last, but due to its size and complexity, maintenance can be more costly and time-consuming compared to smaller models.
     
   • While the CAT 390’s design ensures durability, it’s essential to adhere to a rigorous maintenance schedule to keep the machine in optimal working condition.
     

Cost of Ownership

1. Deere 870:
   • The Deere 870 typically comes with a lower initial purchase price compared to the CAT 390, making it a more economical choice for those on a budget.
     
   • Its fuel efficiency and ease of maintenance also contribute to lower operational costs in the long run.
     
   • However, it may not provide the same level of power and performance as the CAT 390 in the most demanding tasks.
     
2. CAT 390:
   • The CAT 390, while more expensive upfront, offers exceptional power and productivity, which can be crucial for large-scale projects.
     
   • Its operating costs can be higher due to increased fuel consumption and potentially more complex maintenance.
     
   • However, its performance and longevity may justify the higher investment for companies with larger, more demanding workloads.
     

Conclusion
Choosing between the John Deere 870 and the Caterpillar 390 ultimately comes down to the specific needs of your project. The Deere 870 is a fantastic mid-range option for those seeking a balance of power, efficiency, and value. It’s well-suited for general excavation tasks and offers excellent fuel economy.
On the other hand, the CAT 390 is a high-powered, heavy-duty machine ideal for large-scale operations that require superior lifting capacities and durability. While it may come with a higher price tag, its performance and capabilities make it a solid investment for major construction projects.
Assess your project's size, complexity, and budget, and choose the model that best aligns with your requirements.