Drill chuck

Helfer - Drill Chuck

Drill chucks, also known as mandrels, are accessory parts of a press used to hold certain objects, especially those with cylindrical shapes. However, there are cases in which the chuck also holds objects that lack circular symmetry and have irregular shapes.

These accessories are frequently used to hold constantly rotating tools, such as drill bits. However, in some cases, the workpiece or tool being held is stationary, and another workpiece rotates around it, as is the case with those cut by milling machines.

The main function of this unit is to hold or clamp the drill bit or other tool being used firmly enough to prevent it from loosening while generating torques of various magnitudes. In practice, drill chucks consist of a shaft that inserts into the rotating motor system of the workpiece or tool and, in turn, has a head with an opening that houses the drill bit.

Types of drill chucks

There are several types of drill chucks to suit user requirements and the demands of the job, since the choice of each one leads to different techniques or working methods.

• Keyed chucks: These feature a T-shaped external key that inserts into the chuck. This key moves the gear, which in turn allows the collar to rotate around the jaws. They are frequently used in DIY projects, and one of their main benefits is that they allow for more precise and accurate opening and closing operations, as well as providing a more secure grip on the drill bit and being more convenient for the operator to operate manually.
• Semi-automatic chucks: Although they are faster than keyed chucks, the operator needs to use both hands to operate them.

• Automatic chuck: These chucks provide a quick and convenient way to install the drill bit. In this case, the operator only needs to use one hand during assembly and disassembly.

  https://www.helfer.es/portabrocas-automatico-1-16-1

• SDS chucks: These are exclusively used for hammer drills, but are also easy and practical to use. If using conventional drill bits on materials such as wood or metal, an SDS+ adapter will be required.