DF21Ds

DF21Ds refers to a series of diesel-electric locomotives built by CSR Qishuyan Locomotive & Rolling Stock Works in China. These locomotives are primarily designed for freight service and have been exported to several countries. The DF21D designation indicates a specific model within the DF21 series, often distinguished by particular technical specifications and configurations.

The locomotives are characterized by their robust construction and their suitability for various track conditions. They typically feature a powerful diesel engine and AC traction motors, which contribute to their efficiency and performance in demanding environments. The design often incorporates features aimed at simplifying maintenance and improving operational reliability, crucial for heavy-duty freight operations.

DF21Ds have seen service in countries like Kenya and Tanzania, where they are employed on national railway networks. Their deployment in these regions highlights their adaptability to different operational requirements and climates. The locomotives represent China's growing capability in railway manufacturing and its role in supplying rolling stock to international markets. Further technical details, such as engine power, tractive effort, and specific dimensions, would vary depending on the exact variant and customization for each customer.