The Komatsu PC400-7 excavator is a model of hydraulic excavator manufactured by Komatsu, a leading construction equipment company. The PC400-7 excavator is part of the PC400 series and is designed for heavy-duty construction and excavation applications. Here are some key features and specifications of the Komatsu PC400-7:

1. Engine: The PC400-7 excavator is equipped with a Komatsu SAA6D125E-5 engine, which is a turbocharged, air-to-air aftercooled, 6-cylinder, Tier 3-compliant diesel engine. It has a displacement of 11.04 liters and provides high power and fuel efficiency.

2. Operating Weight: The operating weight of the PC400-7 ranges from approximately 38,000 kg to 41,000 kg, depending on the configuration and additional attachments.

3. Bucket Capacity: The standard bucket capacity for the PC400-7 excavator is typically around 2.2 to 2.7 cubic meters, but it can vary depending on the specific bucket used and the application.

4. Digging Depth: The maximum digging depth of the PC400-7 excavator is approximately 8.6 meters, allowing it to reach significant depths for various excavation tasks.

5. Arm Length: The PC400-7 excavator is available with different arm lengths, typically ranging from 3.2 to 3.7 meters, depending on the specific configuration and customer requirements.

6. Hydraulic System: It features a robust hydraulic system that provides powerful and precise control for various operations, including digging, lifting, and swinging.

7. Operator Comfort: The PC400-7 excavator is designed with a spacious and comfortable operator cabin, providing a comfortable working environment. It includes features such as adjustable seats, air conditioning, and excellent visibility for enhanced operator productivity and safety.

8. Technology and Safety: While the PC400-7 excavator is not the latest model, it may offer basic technology and safety features. These can include features like Komtrax (Komatsu's machine monitoring system), rear-view cameras, and optional anti-theft devices.