Hard Concrete Wet Diamond Core Drill – Professional – OTEC AF50

Hard Concrete Wet Diamond Core Drill – Professional – OTEC AF50 is engineered for demanding drilling applications in very hard concrete and dense aggregate materials commonly found in UK construction and civil engineering projects.

The AF50 is designed to cut efficiently through difficult aggregates such as quartz, river gravel and flint while maintaining stable drilling performance in heavily reinforced structural concrete. Its diamond segment design supports reliable cutting even where high levels of steel reinforcement are present.

A key feature of the AF50 is the unique ‘Aero’ low-friction golf ball barrel design, which improves water distribution around the cutting edge. This allows slurry to be cleared more effectively, helping maintain cutting speed and improving drilling efficiency during extended wet drilling operations.

Additional barrel lengths available on request.

✓ Designed for drilling very hard concrete and dense aggregates
✓ Reliable performance in heavily reinforced structural concrete
✓ Fast cutting performance in quartz, flint and river gravel concrete
✓ ‘Aero’ low-friction golf ball barrel design for improved water flow
✓ Enhanced slurry clearance for consistent drilling performance
✓ Suitable for demanding professional construction drilling environments

Specifications Table – Hard Concrete Wet Diamond Core Drill – Professional – OTEC AF50

Variations Table – OTEC AF50

Application:

The Hard Concrete Wet Diamond Core Drill – Professional – OTEC AF50 is suitable for:

• •  Very hard concrete

  •  Reinforced structural concrete

  •  Quartz aggregate concrete

  •  River gravel and flint concrete

  •  Hard natural stone drilling

  •  Infrastructure and structural construction drilling

Usage Guide:

 Before use

Confirm compatibility between the core drill diameter and the drilling motor. Inspect the segments and barrel for damage before use. Ensure water supply is available and confirm correct fitting type.

During use

Apply steady drilling pressure and allow the segments to cut naturally. Avoid forcing the drill through dense aggregates or steel reinforcement. Maintain stable drilling alignment to maximise tool life.

Wet cutting

This core drill must be used with adequate water supply. Continuous water cooling helps control heat build-up and ensures slurry is cleared from the cutting edge.

Is the AF50 suitable for very hard concrete?

Yes. The AF50 is specifically designed for drilling very hard concrete and dense aggregates such as quartz, river gravel and flint.

Can this core drill cut reinforced concrete?

Yes. The AF50 performs well in reinforced structural concrete and materials with high levels of steel reinforcement.

What is the benefit of the ‘Aero’ golf ball design?

The low-friction golf ball barrel design improves water coverage at the cutting edge. This helps slurry clear faster, improving drilling efficiency and maintaining cutting performance.

What is the difference between wet and dry core drilling?

Wet core drilling uses water to cool the diamond segments and flush debris from the cutting area. This reduces heat build-up and improves tool life when drilling dense materials such as reinforced concrete. Dry drilling operates without water and typically requires specialised segments and dust extraction. The AF50 is designed for wet drilling and is not recommended for dry cutting.

Why buy wet diamond core drills from CMT Group?

Buying wet diamond core drills from CMT Group gives contractors reliable UK stock availability and controlled procurement for construction and infrastructure projects. Through the EDGE procurement platform and SiteHive.ai automated stores, contractors can manage drilling consumables efficiently across multiple sites.

CMT Group also supports site operations through a dedicated UK fleet delivery network, helping ensure essential drilling equipment is available when required while improving spend visibility and reducing downtime.