There are many brands in the pneumatic tool industry, and the middle and high-end brands are mainly concentrated in Europe, the United States and Japan. Among them, the American Ingersoll Rand brand is relatively medium, with stable quality and high cost performance. In addition, there are atlas, desoutter, fiam, cooper and other brands, which have relatively high prices. In addition, there are many good brands in Japan: URYU, YOKOTA, TOHNICHI, etc., which are also of good quality.

Pneumatic tools are divided into categories of use, roughly divided into: Pneumatic wrench, pneumatic screwdriver (air), pneumatic grinder, pneumatic grinder, pneumatic ring belt machine, air drill/sheet metal drill, air hammer/shovel, pneumatic rust remover, pneumatic blowing gun, pneumatic nail gun, pneumatic nail gun, pneumatic cutting/flanging machine, pneumatic spray gun, spring crane, three-point combination, accessories, etc.

What are the characteristics of the pneumatic wrench:

Pneumatic tools are mainly a tool that uses compressed air to drive the pneumatic motor and output kinetic energy. According to its basic working mode, it can be divided into:

1) Rotary type (eccentric movable blade type)

2) Reciprocating (positive displacement piston) general pneumatic tools are mainly composed of power output part, operation form conversion part, inlet and exhaust road part, operation start and stop control part, tool housing and other main parts, of course, the operation of pneumatic tools must also have energy supply part, air filtration and air pressure regulation part and tool accessories.

Pneumatic wrench, as the name suggests, refers specifically to the ratchet wrench produced by Juba Company, which has seven performance characteristics:

1. Easy access to air, low working pressure, used air can be discharged on the spot without recycling pipes;

2. The viscosity of the gas is small, the flow resistance loss is small, and it is convenient for centralized gas supply and long-distance transportation;

3. High speed of pneumatic actuator;

4. The pneumatic system has strong adaptability to the environment, can work reliably in a wide temperature range, wet and dusty environment, a little leakage will not pollute the environment, no fire and explosion risk, safe use; 5. Simple structure, easy maintenance, low cost;

6. Long life of pneumatic components;

7. The execution output of pneumatic components is smaller than hydraulic pressure, faster movement, strong adaptability, can work in the harsh environment of easy, explosive, heavy, wet, impact, does not pollute the environment, long working life, simple structure, easy maintenance, low price.

Performance characteristics of pneumatic screwdriver

Pneumatic screwdriver performance characteristics:

Speed:

The speed is generally within 500-8000r/min, because the motor is driven by high pressure gas, the high pressure air will take away the heat generated by the friction of the parts when running, so the long-term high frequency operation will not be hot. Torque accuracy:

Mechanical braking is used, and the change of air pressure will affect the torque stability of the driver, so the error is larger, and the repetition accuracy is about 5%-3%. (It would be better if an air conditioner was added)

Energy consumption:

The compressed gas actuation source is used as long as the air pipeline part is reasonable, the gas consumption of each screwdriver is about 0.28㎡/min, which is relatively more energy saving and environmental protection.

Maintenance cost:

Fewer consumables, as long as attention to regular filling of special pneumatic maintenance refueling, generally within a year without replacement parts.

Advantages:

Mainly lies in fast working speed, high safety, anti-static, low failure rate, long life, energy saving and environmental protection, no danger of electric shock; Does not produce electric spark, suitable for flammable and explosive fields; Torque size adjustment is convenient. ;

Cons:

The noise is larger than that of the electric one, and the error of the torque accuracy is larger than that of the electric one, because the operation is not flexible (such as: air compressor, compressed air pipeline, and the cost is higher).

Note:

1. The working air source should be clean, without water and dirt, and the oil mist generator and water vapor separator should be installed on the air source.

2. Inject a small amount of lubricating oil into the air contact before each use, idling for a few seconds before use.

3. Lubrication of air batch: prime mover construction with HJ-10 (GB443-64) mechanical oil, bearing and impact mechanism with IG-2 (GB491-65) calcium base grease. It must be repaired every three months. After disuse, it should be stored with lubricating oil to prevent rust in the machine. Please remember that maintenance is better than repair.

Structure shape:

1. Straight shape. This is the most common kind. Head models have a word, cross, rice word, T type (plum blossom type), H type (hexagonal), etc

2. L-shape. Commonly seen in hexagonal screwdrivers, the use of its longer rod to increase the torque, so as to save effort.

3. T shape. Automotive repair industry more applications.