Tapping machines

(17 products)

Bernardo tapping and threading machines for internal threads from M10 to M36 on steel, cast iron, and non-ferrous alloys. The catalog includes electric tapping machines, BLO series with touchscreen, automatic reverse, and micro-spray system, and pneumatic tapping machines, P series with quick chuck and adjustable safety clutch. All models feature articulated arms adjustable from 0° to 90°, available with a radius from 1000 to 1700 mm. 17 configurations in stock for mechanical workshops, carpentry, and production departments.

Frequently Asked Questions

What is the difference between an electric tapping machine and a pneumatic tapping machine?

The electric tapping machine (BLO series) offers digital torque control, automatic reversal, and an integrated micro-spray lubrication system. The pneumatic tapping machine (P series) operates on compressed air, has a superior power-to-weight ratio, and incorporates a safety clutch that protects the tap from breakage. The choice depends on available infrastructure and production type: electric for precision and repetitive batches, pneumatic for flexibility and frequent relocation.

Up to what diameter do Bernardo threading machines thread?

The range covers threads from M10 (TM 10 model) to M36 (TM 36 model). The intermediate models TM 12, TM 16, TM 24, and TM 30 cover the most common workshop needs. The maximum capacity refers to standard metric threads on steel with a tensile strength of up to approximately 800 N/mm². On softer materials such as aluminum and brass, the actual range can be higher.

What arm lengths are available?

Yes, provided that suitable taps are used (HSS-E or coated HSS) and a reduced rotational speed compared to carbon steel. BLO electric tapping machines are particularly suitable for stainless steel due to their precise torque control and micro-spray system, which maintains constant lubrication throughout the tapping process, reducing tap wear and improving thread finish.

Can Bernardo threading machines tap stainless steel?

Is a compressor needed for pneumatic tapping machines?

Yes, the P series pneumatic tapping machines require a compressor with a minimum pressure of 6 bar and a flow rate appropriate to the chosen model. Those who do not have a compressed air system can consider the BLO series electric models, which only require a single-phase or three-phase power outlet depending on the power.

How to choose the right tapping machine for your workshop

The choice between an electric and a pneumatic tapping machine depends on the type of production and the available infrastructure in the workshop. The electric models of the BLO series offer digital torque control via touchscreen, automatic spindle reversal at the end of the thread, and an integrated micro-spray system for lubrication during processing. They are the ideal choice for precision threading on medium to large batches, where process repeatability is a priority.

The pneumatic tapping machines of the P series operate on compressed air and ensure a favorable power-to-weight ratio with reduced maintenance. The quick-change chuck with safety clutch protects taps from breakage in case of blind holes or harder-than-expected material. They are suitable for workshops already equipped with a compressed air system and for operations that require frequent movement of the tapping head.

All Bernardo models in the catalog allow the head angle to be adjusted from 0° to 90° and feature articulated arms with radii between 1000 and 1700 mm, to reach working points even on large workpieces. For those who need tapping and drilling on the same machine, metal drilling and milling machines represent a multi-functional alternative. Spare parts, chucks, and adapters are available-