There are several types of percussion drill bits

When purchasing a hammer drill, you need to choose the right type of hammer drill according to the operation requirements. The type of hammer drill is generally distinguished by the bit diameter.

Common percussion drills on the market have the following types: 6mm, 8mmm, 10mm, 12mm, 14mm, 16mm, 20mm, 24mm, 26mm, 28mm, etc. Different types of percussion drills have certain differences in parameters, and the scenarios suitable for use are also different.

Second, how to choose the right percussion drill type

When selecting the hammer drill model, the model is mainly selected according to the construction needs, which can be selected from the following three aspects:

1, according to the operation object and hole diameter selection

Interior decoration and layout of electrical appliances, generally use nylon expansion bolts, hole diameter of 6 ~ 12mm, should choose 10, 12mm specifications of the impact drill; In the construction, hydropower installation and exterior wall decoration, M8 ~ M14mm metal expansion bolts are generally used, and the hole diameter is between 12 ~ 20mm, and the impact drill with 16 and 20mm specifications should be selected.

2, according to the processing material selection

10, 12mm specification impact drill impact frequency is high, suitable for processing brittle materials, such as ceramic tiles, red brick and other products. 16, 20mm specification impact drill output power and torque, suitable for drilling in red brick, light concrete.

3. Choose according to the operating environment

10, 12mm specification impact drill can be operated with one hand, suitable for climbing and drilling upward. 16, 20mm specification impact drill is equipped with side handle and hole depth ruler, can be operated by both hands, suitable for the ground and side hole use.

Three, impact drill specifications and models table how to see

1, blade length

In the impact drill specifications model table for different models marked the relevant edge length, different edge lengths can achieve different depths, so it is necessary to choose the length needed to achieve according to the actual needs. Not being able to reach the length that the impact bit can achieve will affect the progress and even cause damage to the bit.

2. Handle diameter

The length of the handle diameter is also a detail that must be paid attention to when selecting the model specification. The diameter of the handle of different specifications and models are some the same, and some are different, so it is necessary to choose carefully. For example, if the blade diameter is 0. 4 and 0. 5, the handle diameter of both is the same. If the blade diameter is 0.6 and 0.7, then the handle diameter is 3.5.

3. Model and pattern of percussion drill

Different types of percussion drill designs have different patterns. This will also be reflected in some of the more complete model specifications. Common patterns have twist metal drill bit design, flat head drill blunt design and head four cut Angle design, different patterns can achieve impact strength and effect is completely different, must be according to the needs to choose the appropriate drill bit and model. For example, if it is used for ceramic tile drilling, you can choose a bit with four cutting angles of the head; For drilling wood with higher hardness, twist metal head bits can be selected. In general, twist shaped metal drills are the most common.