When purchasing an impact drill, you should choose the appropriate impact drill model according to the operation requirements, and the model of impact drill is generally distinguished by the bit diameter.
There are several kinds of impact drills commonly used in the market: 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 20mm, 24mm, 26mm, 28mm, etc. There are some differences in parameters between different types of impact drills, and there are also suitable scenes.
Second, how to choose the appropriate impact drilling rig model
When selecting the model of impact drilling rig, the selection is mainly based on the construction needs, and can be selected from the following three aspects:
1, according to the working object and aperture.
When arranging electrical appliances in indoor decoration, nylon expansion bolts are generally used, and the aperture is 6 ~ 12mm. Impact drills with specifications of 10 and 12 mm should be selected. M8 ~ M 14 mm metal expansion bolts are generally used for building construction, water and electricity installation and exterior wall decoration, and the hole diameter is between 12 ~ 20mm, so impact drills with specifications of 16 and 20mm should be selected.
2, according to the processing material selection
10 and 12mm impact drills have high impact frequency and are suitable for processing brittle materials such as ceramic tiles and red bricks. 16, the output power and torque of 20mm impact drill are large, which is suitable for drilling red bricks and lightweight concrete.
3, according to the working environment.
Impact drills with specifications of 10 and 12mm can be operated with one hand and are suitable for climbing upwards and drilling holes. 16, 20mm impact drill is equipped with side handle and drilling depth scale, which can be operated by both hands and is suitable for ground and side drilling.
3. What do you think of the specification and model table of impact bit?
1, blade length
In the specification and model table of impact drill, the relevant blade lengths are marked for different models, and the depth that can be achieved by different blade lengths is different, so the required length needs to be selected according to the actual needs. Failure to reach the length that the percussion drill can reach will affect the progress and even cause damage to the drilling rig.
2, handle diameter
The length of the handle diameter is also a detail that must be paid attention to when selecting the model and specification. Different specifications and models aim at the same tool handle diameter, and some are different, so it needs to be carefully selected. For example, the blade diameters are 0.4 and 0.5, and the handle diameters of these two are the same. And if the blade diameter is 0.6 and 0.7, then the handle diameter is 3.5.
3. Model and mode of impact drilling rig
Different types of impact drills have different designs. This will also be reflected in some more comprehensive model specification tables. Common patterns include twist metal bit design, flat drilling design and head four corners design. Different modes can achieve different impact strength and effect, so it is necessary to choose the appropriate drill bit and model according to the needs. For example, for drilling ceramic tiles, you can choose a drill with four corners on the head; For wood drilling with high hardness, you can choose twist metal head drill. Generally speaking, spiral metal drills are the most common.