DC426 and the neighbouring options in the record

The DC426 series black-coated solid carbide drill offers superior performance in micro drilling applications due to its optimized coating and geometry.

Series Overview and Key Features

The DC426 series is a black-coated solid carbide drill designed for precision micro drilling in a variety of materials including steel, stainless steel, copper, and aluminium alloys. This series is particularly effective for applications requiring high accuracy and surface finish. The series is available in a wide diameter range from 0.04 mm to 3.0 mm, making it suitable for both small and medium-sized micro drilling tasks. The black coating enhances wear resistance and thermal stability, which are critical for maintaining tool life and machining efficiency in demanding environments.

Performance Metrics and Their Impact on Machining

The DC426 series is engineered to deliver consistent performance across its diameter range. For instance, the minimum diameter of 0.10 mm ensures that the drill can handle very fine details in intricate components. This capability is essential for applications such as PCB drilling and micro-component manufacturing, where precision is paramount. Additionally, the series includes part numbers such as DC426-1000-04 and DC426-0500-04, which are specifically tailored for different drilling depths and hole diameters, allowing for greater flexibility in machining setups.

The example geometry callout "D1.0073*38" provides insight into the tool's design. The "D1.00" refers to the diameter of the drill, while "7" denotes the flute length. The "3" indicates the number of flutes, and "38" represents the helix angle. These parameters are crucial for determining the tool's cutting efficiency and chip evacuation. A higher helix angle, such as 38 degrees, can improve chip removal and reduce the risk of built-up edge, which is particularly beneficial when drilling harder materials like stainless steel.

Comparative Analysis and Recommendations

When comparing the DC426 series to other grinding series, it is important to consider the specific requirements of the machining task. The DC426 series is ideal for applications where a minimum diameter of 0.10 mm is required, and the black coating provides enhanced wear resistance. For tasks that demand a larger diameter range or different coating options, other series may be more appropriate. However, for general micro drilling, the DC426 series remains a reliable and efficient choice due to its balanced performance across various materials and diameters.

Verified production record

Figures above are transcribed from the production order record and the printed catalogue extracts. Confirm the held tolerance for a specific part number in the written quotation.

See the recorded geometry on the DC426 page of this catalogue.