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A manual wrench for trucks is not needed by everyone, but for owners of large machines and service station workers, it greatly facilitates the work. Such tools are of several types and types. They are divided into percussion and non-shock, electric and battery. And also for tools with and without a gearbox. To decide for yourself which wrench you should choose, you need to find out basic information about all of its varieties.
Electric
Such models are more suitable for domestic use. They are powered by the mains, lightweight and at the same time do their job well. Most often they are purchased for small service stations, tire service, as well as for personal maintenance of cars. However, more expensive and powerful tools can work even for trucks. True, a powerful and good model will cost many times more.
Rechargeable
These tools are widely used and are popular with many drivers. Cordless wrenches are found with different parameters, so it is worth choosing them, focusing on the work that you have to cope with.
The battery in such designs is powerful enough, which makes it possible to change a whole set of wheels at once, even on a truck.
However, when choosing, you need to pay attention to how long the charging can last.
This is especially important for truck drivers, as a weak battery can run out of power on the road.
Pneumatic
Strong enough nutrunner with excellent torque performance. However, the disadvantage of such models is the need to constantly connect them to the compressor. Most often they are used for work in large car dealerships, as well as in industries.
Mechanical
One of the most reliable options among all is considered to be a geared manual wrench "meat grinder". He can screw any necessary part without assistance. That is, he does not need a battery, compressed air, or an electrician. Such a tool is often called a wheeled tool, as it is used in tire fitting for trucks machines. Among its “colleagues” it is the most demanded by truck drivers due to its reliability.
Hydraulic
These impact wrenches have great precision and also have a high torque. Most often they are used to work with very large fasteners precisely because of this. Such tools practically do not vibrate, in addition, they are quite durable. However, they are not suitable for work in the tire service. Perhaps as an additional tool that is used in the most difficult cases.
Hydraulic nutrunners can be divided into two subgroups: sleeve and cassette. The former are used in the most difficult cases: when the nut sits too tightly or the fasteners are covered with rust. In this case, it is the powerful hydraulic impact wrench that helps solve the problem.
Cassette hydraulic nutrunners can also "save" at a difficult moment. They allow you to process hard-to-reach places. This is facilitated by their small diameter and flat shape.
Tips for selection and operation
In order to be able to unscrew the nuts even on the road, it is best to use a nutrunner with a mechanical device.When choosing, you must carefully study its characteristics so that they fully meet the necessary requirements.
- In order for the wrench to last much longer, it is necessary to test it, be sure to lubricate it with specially purchased oil for this, and also check every detail of the tool.
- After that, you need to completely assemble the wrench. To do this, it is necessary to put the head on the nut, and set the stop lever as close as possible to the nut itself.
Then you can begin to rotate the handle and do this until you manage to rip the nut from its place. After that, you need to rebuild the tool itself at a lower speed. After testing, you can proceed to any work that will be feasible for the wrench.
- Do not forget that the nutrunner must be looked after, like any tool.
- It is necessary to remember about safety precautions. Be sure to make sure that there are no cracks, no sharp corners, or even sharp edges on the body itself, as well as on all elements of the multiplier.
- You should not allow high loads when working with the tool. If you need to work for a long time, you can temporarily stop, letting the tool rest.
- It is necessary to ensure that the handle itself fits very tightly.
- If the hexagon is broken, under no circumstances should such a tool be used.
To prolong the life of the wrench, it is necessary to carry out timely inspections and repairs. It is better to do this in specialized salons so as not to damage the instrument yourself.
It is necessary to follow all the rules for storing the product. That is, make sure that neither water nor dirt gets into it. But if it does happen, you must immediately remove all dirt or wipe the water dry.
In addition, immediately lubricate all parts so that they do not rust.
When choosing the right tool, it is worth paying attention to such a parameter as torque. After all, if you choose the wrong model, then the nuts will be tightened more than necessary.
Considering different types of tools, we can conclude that the "meat grinder" nutrunner is best suited for trucks. It is not only easy to use, but also powerful enough. In addition, the tool will help you cope with any situation that happens on the road. It can also be purchased for tire fitting.
You can find out even more useful and interesting information about the Meat Grinder nutrunner from the following video.
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Specifications
The "meat grinder" wrench is a completely uncomplicated design. It is based on a cylinder-shaped body. It brings all the details together and also ensures their full interaction. Most often, such a body is made of polymers or metal (steel). However, in some cases, it can be made of composite materials.
Inside it is a planetary gearbox. Its main part also has a drive shaft, at the end of the handle of which there is a square. On the other side there is an output shaft. It is on this shaft that all heads are installed so that you can work with fasteners. The wrench also has a lever with which you can stop rotation in the very process of work.
One of the main characteristics of such a tool is the gear ratio of the planetary gearbox or, in other words, the multiplier. It serves to convert torque. It is set in motion with a handle, which is why it is called a "meat grinder".
Most often on sale you can find nutrunners with a multiplier ratio of 1 to 56 or 1 to 58. The torque should be from 2700 N * m to 3400 N * m. In addition, the nutrunner comes with two heads that can unscrew or tighten nuts from 27 to 58 millimeters.
Advantages and disadvantages
Almost all the advantages of this design are associated with the multiplier, which converts and also enhances the torque. It is worth noting the following important features of the impact wrench.
- The design itself is quite simple, but at the same time it is durable and reliable.
- Using a nutrunner "meat grinder" fasteners can be unscrewed very smoothly. In addition, this can be done with those parts that ordinary wrenches cannot cope with.
- Such a wrench is small in size, therefore it is very convenient both in work and in transportation.
- It is autonomous.
- It is quite convenient to work with such a tool, because a person applies very little effort, and the work moves very quickly.
- Repair work can be accelerated, which saves time significantly.
One of the biggest drawbacks is considered by many to be the heavy weight of the impact wrench. However, this is not entirely correct, given that very strong metals are used in the manufacture of the tool, therefore, the weight increases. Accordingly, its strength will be several times greater. In addition, those people who do not adhere to the rules for using the tool believe that the high power of the unit is also a disadvantage, because you can simply rip off the thread. Drawing a conclusion from all of the above, it can be noted that if all the recommendations are followed, you will not have to face the shortcomings of the nutrunner.
