Before buying a gear reducer, it&#;s important to take several factors into account.
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A gear reducer is used to adapt the characteristics (torque and speed) of the input and output axis of a mechanism. This is why you have to know the torque and rotation speed.
It is therefore appropriate to ask yourself about the torque first and foremost. A reducer increases the torque of your motor and thus allows a receiving member to rotate under the impact of a new torque. Gear reducer manufacturers sometimes indicate the minimum and maximum torque (expressed in newton meters, N.m) that can be supported by each of their products. The torque density varies according to the gear reducer. For example, planetary gearboxes have a high torque density.
The other purpose of a gear reducer is to reduce the motor speed and we recommend that you take into account the ideal reduction ratio for your use. Based on the rotational speed of your motor, the reduction ratio is used to determine the output rotational speed. This information is also indicated by manufacturers on their product pages. It is given in revolutions per minute.
Lastly, you should ask yourself what kind of gear reducer assembly is most appropriate for your application. The input and output shafts of your gear reducer can be coaxial, parallel-shaft or orthogonal. This depends on your intended use.
Worm gear reducers have perpendicular input and output shafts. They are generally used for applications requiring a very high transmission ratio.
The mechanism of worm gear reducers is non-reversible. This means that the worm wheel cannot drive the worm. The advantage of this non-reversible mechanism is that it ensures a greater level of security for the system.
Worm gear reducers are less expensive than planetary gearboxes and are also quieter. Worm gear reducers do not vibrate, so they generate little noise and are more comfortable to use.
However, like planetary gearboxes, worm gear reducers heat up quickly due to how compact they are. They also have a variable performance level. You can however improve the performance by combining your worm gear reducer with other gearboxes and gear trains.
We recommend that you choose this type of technology for conveyors, winches and handling.
Bevel gear reducers&#; main characteristic is their angular bell crank, which allows the user to change the machine&#;s rotation system. This will allow you to switch from a transverse rotation system to a longitudinal rotation system.
Bevel gear reducers are compact. They are also robust and can handle a lot of power. As such, if you need a high torque we recommend that you choose this technology. The robustness of their teeth allows you to use them with three-phase asynchronous motors, or synchronous or asynchronous servomotors.
Bevel gear reducers are quiet, making using them pleasant to use. Additionally, they offer a high performance level and are energy efficient. Their performance level remains lower than planetary gearboxes however. Bevel gear reducers are also very expensive and require difficult maintenance.
Bevel gear reducers are generally used for high-powered conveyors, but also for mobile machinery used in agricultural or public works.
In order to calculate the dimensions of your gear reducer, you will need to choose the right shaft. There are three different shaft orientations: orthogonal, coaxial and parallel.
If a gear reducer has an orthogonal shaft orientation, the input and output shafts are perpendicular. This is often the case for bevel gear reducers and worm gear reducers. Orthogonal shaft orientation is also used in industrial installations and differential automotive bridges.
If a gear reducer has a coaxial shaft orientation, the input and output shafts are aligned. This is the case, for example, for planetary gearboxes or gear reducers used in engines and turboprop engines used in the aeronautic industry.
If a gear reducer has a parallel shaft orientation, the input and output shafts are parallel.
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