Threaded auger 50Cr: a reliable solution for professional drilling

The threaded auger 50Cr is an essential tool for geotechnical and environmental drilling operations. Designed to withstand demanding working conditions, it delivers an excellent balance between mechanical performance, durability and drilling accuracy. Thanks to its standardised thread and multiple size options, it easily adapts to a wide range of professional job site configurations.

Moreover, the models presented in the Technidrill catalogue cover a broad selection of diameters, lengths and pitches. As a result, drilling professionals can meet specific operational requirements, regardless of ground conditions.

Technical characteristics of the 50Cr threaded auger

The threaded auger is manufactured from alloyed 50Cr steel, which is widely recognised for its resistance to wear and repeated mechanical stress. Consequently, this material ensures long service life, even during intensive drilling operations.

In addition, each threaded auger is produced with precise machining tolerances. Therefore, it guarantees perfect compatibility with all components of the drilling string.

Key technical specifications

• Outside diameters available from 75 mm to 400 mm
• Standard lengths ranging from 1,000 mm to 3,000 mm
• Variable flight pitch depending on diameter
• Standardised 2”3/8 API and 2”7/8 API threads
• Flight thickness designed to withstand cutting forces

As a result, these specifications ensure efficient spoil removal while maintaining excellent stability throughout the drilling process.

Advantages of using a threaded auger for drilling

The threaded auger provides several operational advantages, which explain its widespread use on drilling sites.

Firstly, the threaded connection allows fast assembly of multiple sections. Therefore, operators can reach greater drilling depths without compromising rigidity. Secondly, the helical design ensures continuous transport of excavated material towards the surface.

Key benefits for drilling professionals

• Quick assembly and dismantling on site
• Efficient transmission of rotational torque
• Excellent stability in soft to semi-compact soils
• Compatibility with a wide range of cutting tools

Furthermore, the strength of 50Cr steel significantly reduces the risk of premature deformation, even under challenging drilling conditions.

Compatibility with auger drilling tools

The 50Cr threaded auger is designed to operate with a wide selection of cutting tools. Tool choice mainly depends on the type of soil or geological formation encountered during drilling.

According to the catalogue, several solutions are available, including:

• Fish tail blades for soft soils
• Mining bits for abrasive ground
• Finger bits for heterogeneous formations
• Bulldog and DP Rock tools for hard formations

Therefore, this compatibility allows operators to adapt the threaded auger to each drilling context, while keeping the same auger string.

Applications of threaded augers

Thanks to their versatile design, 50Cr threaded augers are widely used across multiple sectors:

• Geotechnical drilling
• Soil investigations and environmental surveys
• Light foundation works
• Drilling for piles and ground anchors

In all cases, drilling consistency and equipment reliability play a decisive role in achieving accurate and repeatable results.

Why choose a 50Cr threaded auger?

Choosing a threaded auger made from 50Cr steel means investing in a durable, precise and professional drilling tool. Its standardised design allows easy integration into existing equipment, while also ensuring high operational safety.

Finally, the availability of customised configurations makes it possible to adapt the equipment to specific project requirements. Consequently, productivity and efficiency on site are significantly improved.